/* Nemara — public site.
   Palette from the Nemara brand system (paper ground, ink, shu vermilion, ochre, pine).
   Fonts are self-hosted (SIL OFL, see fonts/LICENSE): no third-party requests.
   Japanese: Instrument * cover Latin only, so CJK falls through to the named mincho/gothic
   faces. Yu Gothic is always named — unnamed CJK on English Windows renders in a Chinese face. */
@font-face{font-family:'Instrument Serif';src:url(fonts/instrument-serif-latin-400-normal.woff2) format('woff2');
  font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'Instrument Serif';src:url(fonts/instrument-serif-latin-400-italic.woff2) format('woff2');
  font-weight:400;font-style:italic;font-display:swap}
@font-face{font-family:'Instrument Sans';src:url(fonts/instrument-sans-latin-wght-normal.woff2) format('woff2');
  font-weight:400 700;font-style:normal;font-display:swap}

:root{
  --display:'Instrument Serif','Iowan Old Style','Palatino Linotype',Georgia,'Yu Mincho','YuMincho','Hiragino Mincho ProN','Noto Serif JP','Yu Gothic',serif;
  --sans:'Instrument Sans','Segoe UI',Roboto,'Helvetica Neue','Yu Gothic','Yu Gothic UI','Hiragino Sans','Noto Sans JP',system-ui,sans-serif;
  --mono:ui-monospace,'SF Mono','Cascadia Code',Consolas,'Yu Gothic',monospace;

  --ground:#ECEEE8;--surface:#F5F6F0;--surface-2:#E3E7DC;--ink:#1B211C;--muted:#566052;--faint:#7C8676;
  --hairline:#D0D5C8;--hairline-strong:#BDC4B2;--critical:#A8362B;--surge:#B0762A;--pine:#3C5B49;
  --shadow:0 1px 2px rgba(27,33,28,.05),0 18px 50px -12px rgba(27,33,28,.18);

  /* The night palette is fixed: hero and closing bands are dark in both themes */
  --night:#0D110C;--night-2:#141A12;--on-night:#E9ECE3;--on-night-muted:#A3AD98;--ember:#E0624F;--amber:#D69A44;
  color-scheme:light dark;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --ground:#10140F;--surface:#161B14;--surface-2:#1E251B;--ink:#E7E9DF;--muted:#9EA794;--faint:#79826E;
    --hairline:#262E22;--hairline-strong:#36402D;--critical:#D9503F;--surge:#D69A44;--pine:#7FA98A;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 18px 50px -12px rgba(0,0,0,.6);
  }
}
:root[data-theme="dark"]{
  --ground:#10140F;--surface:#161B14;--surface-2:#1E251B;--ink:#E7E9DF;--muted:#9EA794;--faint:#79826E;
  --hairline:#262E22;--hairline-strong:#36402D;--critical:#D9503F;--surge:#D69A44;--pine:#7FA98A;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 18px 50px -12px rgba(0,0,0,.6);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--sans);font-size:18px;line-height:1.65;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
html[lang="ja"] body{font-size:17px;line-height:1.95;letter-spacing:.03em}
a{color:inherit}
p{margin:0 0 1.1rem}
h1,h2,h3{font-family:var(--display);font-weight:400;margin:0;text-wrap:balance}
em{font-style:italic}
html[lang="ja"] h1,html[lang="ja"] h2,html[lang="ja"] h3{font-weight:600;letter-spacing:.04em}
/* Japanese faces have no italic; a synthetic slant looks broken, so emphasis is colour only */
html[lang="ja"] em{font-style:normal}
:focus-visible{outline:2px solid var(--critical);outline-offset:3px;border-radius:2px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:12px;z-index:50;background:var(--surface);color:var(--ink);padding:6px 10px}

.wrap{position:relative;z-index:1;max-width:1180px;margin:0 auto;padding:0 clamp(16px,4vw,40px)}
.eyebrow{font-family:var(--sans);font-size:.72rem;font-weight:600;letter-spacing:.24em;text-transform:uppercase;color:var(--muted)}
html[lang="ja"] .eyebrow{letter-spacing:.18em}
.eyebrow .no{color:var(--critical);margin-right:14px;font-variant-numeric:tabular-nums}

/* ---------- Navigation ---------- */
.nav{position:fixed;inset:0 0 auto 0;z-index:20;transition:background .35s ease,border-color .35s ease,color .35s ease;
  border-bottom:1px solid transparent;color:var(--on-night)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.nav.solid{background:color-mix(in oklab,var(--ground) 82%,transparent);backdrop-filter:blur(14px) saturate(1.2);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);border-color:var(--hairline);color:var(--ink)}
.wordmark{font-family:'Instrument Serif',Georgia,serif;font-size:1.75rem;line-height:1;text-decoration:none;letter-spacing:.01em}
.wordmark span{color:var(--ember)}
.nav.solid .wordmark span{color:var(--critical)}
.links{display:flex;align-items:center;gap:clamp(14px,2.6vw,32px);font-size:.88rem}
.links a{text-decoration:none;opacity:.78;transition:opacity .2s}
.links a:hover{opacity:1}
.links .lang{opacity:1;border:1px solid currentColor;border-color:color-mix(in oklab,currentColor 35%,transparent);
  padding:4px 12px;border-radius:999px;font-size:.8rem}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:100vh;min-height:100svh;background:var(--night);color:var(--on-night);
  display:flex;align-items:flex-end;overflow:hidden;isolation:isolate}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;z-index:-2}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(120% 90% at 0% 100%, rgba(13,17,12,.92) 0%, rgba(13,17,12,.55) 45%, rgba(13,17,12,0) 75%),
    linear-gradient(to bottom, rgba(13,17,12,.55), rgba(13,17,12,0) 22%)}
.hero .wrap{width:100%;padding-top:120px;padding-bottom:clamp(40px,8vh,88px)}
.hero .eyebrow{color:var(--on-night-muted);display:flex;align-items:center;gap:16px;margin-bottom:clamp(20px,3vh,32px)}
.hero .eyebrow::before{content:"";width:34px;height:1px;background:var(--ember)}
.hero h1{font-size:clamp(3.3rem,10.5vw,9.4rem);line-height:.9;letter-spacing:-.025em;max-width:11ch}
.hero h1 em{color:var(--ember)}
html[lang="ja"] .hero h1{font-size:clamp(2.5rem,7.4vw,6.2rem);line-height:1.18;letter-spacing:.02em;max-width:none}
.hero .sub{max-width:46ch;margin-top:clamp(24px,4vh,40px);color:var(--on-night-muted);font-size:clamp(1rem,1.4vw,1.16rem)}
html[lang="ja"] .hero .sub{max-width:34em}
.hero .sub strong{color:var(--on-night);font-weight:500}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:clamp(26px,4vh,40px)}
.btn{display:inline-flex;align-items:center;gap:10px;padding:13px 22px;border-radius:999px;text-decoration:none;
  font-size:.92rem;font-weight:500;border:1px solid transparent;transition:transform .2s ease,background .2s,border-color .2s,color .2s}
.btn:hover{transform:translateY(-1px)}
.btn.light{background:var(--on-night);color:var(--night)}
.btn.light:hover{background:#fff}
.btn.ghost{border-color:rgba(233,236,227,.3);color:var(--on-night)}
.btn.ghost:hover{border-color:var(--on-night)}
.btn .arr{transition:transform .2s}
.btn:hover .arr{transform:translateX(3px)}
.chain{display:flex;flex-wrap:wrap;gap:6px 0;margin-top:clamp(40px,8vh,84px);padding-top:20px;
  border-top:1px solid rgba(233,236,227,.14);font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;color:var(--on-night-muted)}
.chain span{display:flex;align-items:center}
.chain span + span::before{content:"→";margin:0 18px;color:var(--ember);letter-spacing:0}

/* ---------- Sections ---------- */
section{position:relative;padding:clamp(80px,13vh,150px) 0}
section + section{border-top:1px solid var(--hairline)}
.head{display:grid;grid-template-columns:minmax(0,1fr);gap:22px;margin-bottom:clamp(40px,6vh,64px)}
.statement{font-size:clamp(2.1rem,4.8vw,4.1rem);line-height:1.04;letter-spacing:-.015em;max-width:20ch}
html[lang="ja"] .statement{font-size:clamp(1.7rem,3.6vw,2.9rem);line-height:1.4;max-width:24em}
.statement .soft{color:var(--faint)}
.statement em{color:var(--critical)}
.lead{font-size:clamp(1.05rem,1.5vw,1.2rem);color:var(--muted);max-width:60ch}
html[lang="ja"] .lead{max-width:38em}
.prose{max-width:62ch;color:var(--muted)}
html[lang="ja"] .prose{max-width:38em}
.prose strong{color:var(--ink);font-weight:600}

/* Why — three shifts */
.shifts{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2vw,24px);margin-top:clamp(40px,6vh,64px)}
.shift{background:var(--surface);border:1px solid var(--hairline);border-radius:18px;padding:clamp(24px,3vw,34px);
  display:flex;flex-direction:column;gap:14px;box-shadow:var(--shadow)}
.shift .ix{font-family:'Instrument Serif',Georgia,serif;font-size:3rem;line-height:.8;color:var(--critical);font-style:italic}
.shift h3{font-size:1.6rem;line-height:1.1}
html[lang="ja"] .shift h3{font-size:1.25rem;line-height:1.5}
.shift p{color:var(--muted);font-size:.98rem;margin:0}

/* Monitoring vs intelligence */
.versus{display:grid;grid-template-columns:150px 1fr 1fr;border-top:1px solid var(--hairline-strong)}
.versus > div{padding:22px 20px 22px 0;border-bottom:1px solid var(--hairline)}
.versus .k{font-size:.72rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--faint);padding-top:30px}
.versus .colh{font-family:var(--display);font-size:clamp(1.6rem,2.6vw,2.2rem);padding-top:28px;padding-bottom:18px}
.versus .colh.us{color:var(--critical)}
.versus .old{color:var(--faint);font-size:clamp(1rem,1.5vw,1.15rem)}
.versus .new{font-size:clamp(1.05rem,1.6vw,1.22rem);font-weight:500}
.versus .new::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--critical);
  margin-right:12px;vertical-align:.15em}

/* How — the chain */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;counter-reset:s}
.steps::before{content:"";position:absolute;left:0;right:0;top:27px;height:1px;
  background:linear-gradient(to right,var(--pine),var(--surge),var(--critical),var(--ink))}
.step{padding-right:clamp(16px,2.4vw,32px);position:relative}
.step .dot{width:55px;height:55px;border-radius:50%;background:var(--ground);border:1px solid var(--hairline-strong);
  display:grid;place-items:center;font-family:'Instrument Serif',Georgia,serif;font-size:1.4rem;position:relative;z-index:1}
.step:nth-child(1) .dot{color:var(--pine);border-color:var(--pine)}
.step:nth-child(2) .dot{color:var(--surge);border-color:var(--surge)}
.step:nth-child(3) .dot{color:var(--critical);border-color:var(--critical)}
.step:nth-child(4) .dot{background:var(--ink);color:var(--ground);border-color:var(--ink)}
.step .q{display:block;margin-top:26px;font-size:.72rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--faint)}
.step h3{font-size:clamp(1.7rem,2.6vw,2.2rem);margin:6px 0 10px}
html[lang="ja"] .step h3{font-size:1.4rem}
.step p{color:var(--muted);font-size:.96rem;margin:0}

/* Beliefs */
.beliefs{display:grid;grid-template-columns:1fr 1fr;gap:0 clamp(32px,6vw,90px)}
.belief{padding:30px 0;border-top:1px solid var(--hairline-strong);display:grid;grid-template-columns:52px 1fr;gap:4px 10px}
.belief .ix{font-family:'Instrument Serif',Georgia,serif;font-style:italic;font-size:1.5rem;color:var(--critical);line-height:1.2}
.belief h3{font-size:clamp(1.5rem,2.2vw,1.9rem);line-height:1.15;margin-bottom:8px}
html[lang="ja"] .belief h3{font-size:1.3rem;line-height:1.5}
.belief p{grid-column:2;color:var(--muted);margin:0;font-size:.98rem}

/* Closing */
.closing{background:var(--night);color:var(--on-night);border-top:0;overflow:hidden;isolation:isolate}
.closing::before{content:"";position:absolute;inset:0;z-index:-1;opacity:.9;
  background:
    radial-gradient(70% 90% at 85% 110%, rgba(60,91,73,.45), transparent 70%)}
.closing .statement{color:var(--on-night);max-width:16ch}
html[lang="ja"] .closing .statement{max-width:20em}
.closing .statement em{color:var(--ember)}
.closing .eyebrow{color:var(--on-night-muted)}
.mail{display:inline-block;margin-top:clamp(32px,5vh,52px);font-family:'Instrument Serif',Georgia,serif;
  font-size:clamp(2rem,5vw,3.6rem);line-height:1;text-decoration:none;border-bottom:1px solid rgba(233,236,227,.3);
  padding-bottom:8px;transition:color .2s,border-color .2s}
.mail:hover{color:var(--ember);border-color:var(--ember)}
.closing .note{margin-top:22px;color:var(--on-night-muted);font-size:.95rem;max-width:52ch}

footer{background:var(--night);color:var(--on-night-muted);font-size:.8rem;padding:0 0 40px}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:28px;border-top:1px solid rgba(233,236,227,.12)}
footer a{text-decoration:none}

/* Reveal on scroll (JS-gated, motion-safe) */
@media (prefers-reduced-motion:no-preference){
  .js .reveal{opacity:0;transform:translateY(22px);transition:opacity .9s ease,transform .9s cubic-bezier(.2,.7,.2,1)}
  .js .reveal.in{opacity:1;transform:none}
  .js .reveal.d1{transition-delay:.08s}.js .reveal.d2{transition-delay:.16s}.js .reveal.d3{transition-delay:.24s}
}

@media (max-width:900px){
  .shifts{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr;row-gap:44px}
  .steps::before{display:none}
  .beliefs{grid-template-columns:1fr}
  .versus{grid-template-columns:1fr 1fr}
  .versus .k{grid-column:1 / -1;padding:18px 0 0;border-bottom:0}
  .versus .blank{display:none}
}
@media (max-width:640px){
  body{font-size:17px}
  .links a:not(.lang){display:none}
  .steps{grid-template-columns:1fr}
  .chain{font-size:.66rem}
  .chain span + span::before{margin:0 10px}
  .belief{grid-template-columns:38px 1fr}
}