:root{--bg:#f8f6f2;--paper:#fffdfa;--ink:#222;--muted:#6d6963;--line:#d9d4cc;--accent:#a7282d;--accent-dark:#7f171c;--accent-soft:#f3e4e5;--jp:"Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic",Meiryo,sans-serif;--en:"Avenir Next",Arial,sans-serif}
html[data-theme=blue]{--accent:#1f5f99;--accent-dark:#174873;--accent-soft:#e5eef6}html[data-theme=green]{--accent:#34735a;--accent-dark:#24523f;--accent-soft:#e4efe9}html[data-theme=gold]{--accent:#a06b00;--accent-dark:#765000;--accent-soft:#f4ecd9}html[data-theme=black]{--accent:#202020;--accent-dark:#000;--accent-soft:#e7e7e7}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--jp);line-height:1.75}html.lang-en body{font-family:var(--en)}img{display:block;max-width:100%}a{color:inherit}
.en{display:none}html.lang-en .ja{display:none}html.lang-en .en{display:block}
header{position:sticky;top:0;z-index:10;min-height:78px;padding:0 4vw;display:flex;align-items:center;justify-content:space-between;background:rgba(248,246,242,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.brand{display:flex;flex-direction:column}.brand strong{color:var(--accent);letter-spacing:.12em}.brand span{font:600 .7rem/1.5 var(--en);letter-spacing:.08em}nav{display:flex;gap:1.4rem}nav a{text-decoration:none;font:500 .82rem/1 var(--en)}.controls{display:flex;gap:.6rem;align-items:center}.themes{display:flex;gap:.35rem}.dot{width:15px;height:15px;border:0;border-radius:50%;cursor:pointer}.dot[data-theme=red]{background:#a7282d}.dot[data-theme=blue]{background:#1f5f99}.dot[data-theme=green]{background:#34735a}.dot[data-theme=gold]{background:#a06b00}.dot[data-theme=black]{background:#202020}.dot.active{outline:2px solid var(--accent);outline-offset:2px}select,#lang{border:1px solid var(--line);border-radius:999px;background:var(--paper);padding:.55rem .75rem}
.hero{width:min(1280px,calc(100% - 3rem));margin:auto;min-height:760px;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(260px,.65fr);gap:6vw;align-items:center;padding:6rem 0}.hero h1{margin:0;font-size:clamp(3rem,5vw,5.1rem);line-height:1.17;letter-spacing:-.04em}.hero h1 span{display:block;white-space:nowrap}.eyebrow{color:var(--accent);font:700 .76rem/1.4 var(--en);letter-spacing:.14em;text-transform:uppercase}.lead{max-width:760px;color:#4e4b47;font-size:1.08rem}.meta{display:flex;flex-direction:column;margin-top:2rem}.meta strong{font-size:1.25rem}.meta span{color:var(--muted)}.actions{display:flex;gap:.8rem;margin-top:1.7rem}.primary,.secondary{display:inline-block;padding:.75rem 1.05rem;text-decoration:none;border:1px solid var(--accent)}.primary{background:var(--accent);color:#fff}.secondary{background:transparent}.hero figure{margin:0;display:flex;justify-content:center}.hero figure img{width:340px;aspect-ratio:1;border-radius:50%;object-fit:cover;border:1px solid var(--line)}
html[data-portrait-size=none] .hero{grid-template-columns:1fr}html[data-portrait-size=none] .hero figure{display:none}html[data-portrait-size=medium] .hero figure img{width:430px}html[data-portrait-size=large] .hero figure img{width:500px}
.positioning,.section{width:min(1180px,calc(100% - 2rem));margin:auto;padding:7rem 0}.positioning{text-align:center;max-width:960px}.positioning h2{font-size:clamp(2.4rem,4.5vw,4.8rem);line-height:1.2}.positioning>p:last-child{color:var(--muted);font-size:1.08rem}
.section-title{display:flex;gap:1rem;margin-bottom:3rem}.section-title>span{color:var(--accent);font-weight:700}.section-title p{margin:0;color:var(--muted);font:700 .74rem/1.4 var(--en);letter-spacing:.14em}.section-title h2{margin:.25rem 0 0;font-size:clamp(2rem,4vw,4rem);line-height:1.15}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.two-col>article{padding:2.4rem;background:var(--paper);border:1px solid var(--line);border-top:4px solid var(--accent)}.two-col .ai{background:var(--accent-soft)}.kicker{color:var(--accent);font:700 .72rem/1.4 var(--en);letter-spacing:.13em}.two-col h3{font-size:clamp(1.6rem,2.6vw,2.5rem);line-height:1.3}.desc{color:var(--muted)}.group{padding:1.3rem 0;border-top:1px solid var(--line)}.group h4{margin:0 0 .6rem}.group ul{margin:0;padding-left:1.2rem}.group li{margin:.3rem 0}
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:1rem}.stats article{padding:1.5rem;background:var(--paper);border:1px solid var(--line);min-height:245px}.stats strong{color:var(--accent);font:700 clamp(2rem,3vw,3.3rem)/1 var(--en)}.stats h3{font-size:1rem;margin-top:2rem}.stats p{color:var(--muted);font-size:.9rem}.note{border-left:3px solid var(--accent);padding-left:1rem;color:var(--muted)}
.muted{width:100%;max-width:none;padding-left:max(1rem,calc((100vw - 1180px)/2));padding-right:max(1rem,calc((100vw - 1180px)/2));background:var(--accent-soft)}.section-lead{max-width:820px;color:var(--muted)}.deliverables{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}.deliverables article{padding:1.6rem;min-height:210px;background:var(--paper);border:1px solid var(--line)}.deliverables span{color:var(--accent);font-weight:700}.deliverables p{color:var(--muted)}
.books-band{display:grid;grid-template-columns:.7fr 1.3fr;gap:4rem;align-items:center;padding:6rem max(1rem,calc((100vw - 1180px)/2));background:var(--accent-soft)}.books-band h2{font-size:clamp(2.4rem,5vw,5rem);line-height:1.1}.books{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem}.books article{background:var(--paper);padding:1rem;border:1px solid var(--line);border-radius:12px}.books img{aspect-ratio:2/3;object-fit:cover}.books h3{font-size:1rem}
.contact{text-align:center;padding:7rem 1rem;background:var(--accent-soft)}.contact h2{font-size:clamp(2.4rem,4.2vw,4.8rem);white-space:nowrap}.contact p{max-width:760px;margin:1.2rem auto 2rem;color:var(--muted)}footer{padding:1.5rem;text-align:center;color:var(--muted);font-size:.8rem}
@media(max-width:1050px){nav{display:none}.hero{grid-template-columns:1fr}.hero figure{order:-1}.stats{grid-template-columns:repeat(2,1fr)}.deliverables{grid-template-columns:repeat(2,1fr)}}
@media(max-width:800px){.two-col,.books-band{grid-template-columns:1fr}.books{grid-template-columns:repeat(2,1fr)}.controls .themes{display:none}.hero h1 span{white-space:normal}}
@media(max-width:600px){header{padding:.7rem}.brand span{display:none}.hero{width:calc(100% - 1.4rem);padding:3rem 0}.stats,.deliverables{grid-template-columns:1fr}.contact h2{white-space:normal}.books{grid-template-columns:1fr 1fr}}


/* v2.1 English hero collision fix */
html.lang-en .hero {
  grid-template-columns: minmax(0, 1.48fr) minmax(250px, .52fr);
  column-gap: clamp(4rem, 7vw, 7.5rem);
}

html.lang-en .hero .copy {
  max-width: 760px;
  min-width: 0;
}

html.lang-en .hero h1 {
  max-width: 720px;
  font-size: clamp(2.75rem, 4.15vw, 4.45rem);
  line-height: 1.12;
  letter-spacing: -.045em;
}

html.lang-en .hero h1 span {
  display: block;
  white-space: nowrap;
}

html.lang-en .hero figure img {
  width: 300px;
}

html.lang-en[data-portrait-size="medium"] .hero figure img {
  width: 370px;
}

html.lang-en[data-portrait-size="large"] .hero figure img {
  width: 430px;
}

/* Wider desktop safety net */
@media (min-width: 1101px) and (max-width: 1450px) {
  html.lang-en .hero {
    width: min(1240px, calc(100% - 3rem));
    grid-template-columns: minmax(0, 1.55fr) minmax(240px, .45fr);
    column-gap: 4.5rem;
  }

  html.lang-en .hero h1 {
    max-width: 670px;
    font-size: clamp(2.65rem, 4vw, 4.15rem);
  }

  html.lang-en .hero figure img {
    width: 280px;
  }

  html.lang-en[data-portrait-size="medium"] .hero figure img {
    width: 340px;
  }

  html.lang-en[data-portrait-size="large"] .hero figure img {
    width: 390px;
  }
}

/* Tablet and mobile: stack cleanly */
@media (max-width: 1050px) {
  html.lang-en .hero {
    grid-template-columns: 1fr;
  }

  html.lang-en .hero .copy {
    max-width: 820px;
  }

  html.lang-en .hero h1 {
    max-width: 780px;
    font-size: clamp(2.5rem, 7vw, 4.2rem);
  }

  html.lang-en .hero h1 span {
    white-space: normal;
    text-wrap: balance;
  }

  html.lang-en .hero figure img {
    width: min(58vw, 300px);
  }
}


/* v2.2 language visibility fix */
html:not(.lang-en) .en {
  display: none !important;
}

html:not(.lang-en) .ja {
  display: block;
}

html.lang-en .ja {
  display: none !important;
}

html.lang-en .en {
  display: block;
}

/* Inline and button elements need their correct display mode */
html:not(.lang-en) a.ja,
html:not(.lang-en) button.ja,
html:not(.lang-en) span.ja,
html:not(.lang-en) strong.ja {
  display: inline-block;
}

html.lang-en a.en,
html.lang-en button.en,
html.lang-en span.en,
html.lang-en strong.en {
  display: inline-block;
}