:root{
  --ink:#241B12;
  --ink-soft:#3A2C1D;
  --honey:#D9A441;
  --honey-deep:#B9791A;
  --honey-pale:#F2CD7E;
  --paper:#FBF3DF;
  --paper-warm:#F5E8C8;
  --line:rgba(36,27,18,0.12);
  --line-on-ink:rgba(251,243,223,0.16);
  --muted:#6B5C45;
  --muted-on-ink:#C9B48C;
  --radius:2px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'Noto Sans JP', sans-serif;
  background:var(--paper);
  color:var(--ink);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{
  font-family:'Zen Kaku Gothic New', sans-serif;
  letter-spacing:0.02em;
}
.mono{
  font-family:'IBM Plex Mono', monospace;
  letter-spacing:0.12em;
  text-transform:uppercase;
}
a{color:inherit; text-decoration:none;}
img{max-width:100%; display:block;}
.wrap{
  max-width:1180px;
  margin:0 auto;
  padding:0 32px;
}
@media(max-width:640px){ .wrap{padding:0 20px;} }

/* ---------- Header ---------- */
header{
  position:fixed; top:0; left:0; right:0; z-index:100;
  background:rgba(251,243,223,0.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex; align-items:center; justify-content:space-between;
  height:76px;
}
.brand{
  display:flex; align-items:center; gap:10px;
  font-family:'Zen Kaku Gothic New', sans-serif;
  font-weight:900; font-size:19px; letter-spacing:0.02em;
}
.brand .hexmark{
  width:40px; height:40px; flex-shrink:0;
  object-fit:contain;
}
nav ul{
  list-style:none; display:flex; gap:36px;
}
nav a{
  font-size:13px; font-weight:500; letter-spacing:0.08em;
  color:var(--ink-soft);
  position:relative;
  padding-bottom:4px;
}
nav a::after{
  content:''; position:absolute; left:0; bottom:0; width:0; height:2px;
  background:var(--honey-deep); transition:width .25s ease;
}
nav a:hover::after{ width:100%; }
nav a.active{ color:var(--honey-deep); }
nav a.active::after{ width:100%; }
.nav-cta{
  background:var(--ink); color:var(--paper) !important;
  padding:10px 20px; font-size:12.5px; font-weight:600;
  border-radius:var(--radius);
  letter-spacing:0.08em;
}
.nav-cta:hover{ background:var(--honey-deep); }
.menu-btn{ display:none; background:none; border:none; cursor:pointer; }
.mobile-nav{
  display:none;
  position:fixed; top:76px; left:0; right:0; bottom:0;
  background:var(--paper);
  transform:translateY(-110%);
  transition:transform .35s ease;
  z-index:99;
  padding:40px 28px;
}
@media(max-width:860px){
  nav > ul{ display:none; }
  .menu-btn{ display:block; }
  .hamburger{ width:24px; height:18px; position:relative; }
  .hamburger i{
    position:absolute; left:0; width:100%; height:2px; background:var(--ink);
    transition:.25s;
  }
  .hamburger i:nth-child(1){ top:0; }
  .hamburger i:nth-child(2){ top:8px; }
  .hamburger i:nth-child(3){ top:16px; }
  .mobile-nav{ display:block; }
  .mobile-nav.open{ transform:translateY(0); }
  .mobile-nav ul{ list-style:none; display:flex; flex-direction:column; gap:26px; }
  .mobile-nav a{ font-size:20px; font-weight:700; font-family:'Zen Kaku Gothic New',sans-serif; }
}

/* ---------- Page header banner (sub pages) ---------- */
.page-hero{
  position:relative;
  padding:190px 0 90px;
  background:var(--ink);
  color:var(--paper);
  overflow:hidden;
}
.page-hero .hexbg{
  background-image:url("assets/hex.svg");
  background-repeat:repeat;
  background-size:64px 110.85px;
  position:absolute; inset:0; opacity:0.5;
}
.page-hero-inner{ position:relative; z-index:2; }
.page-hero .mono{ font-size:12px; color:var(--honey); margin-bottom:18px; display:block; }
.page-hero h1{ font-size:clamp(32px,5vw,52px); font-weight:900; }
.page-hero p{ margin-top:16px; color:var(--muted-on-ink); font-size:15px; max-width:560px; }
.breadcrumb{ font-size:12px; color:var(--muted-on-ink); margin-bottom:20px; }
.breadcrumb a:hover{ color:var(--honey); }

/* ---------- Hero (home) ---------- */
.hero{
  position:relative;
  padding:170px 0 120px;
  background:var(--paper);
  overflow:hidden;
}
.hero .hexbg{
  position:absolute; inset:0;
  background-image:url("assets/hex-dark.svg");
  background-repeat:repeat;
  background-size:64px 110.85px;
}
.hero-inner{ position:relative; z-index:2; }
.eyebrow{
  display:inline-flex; align-items:center; gap:10px;
  font-size:12px; color:var(--honey-deep); font-weight:600;
  margin-bottom:26px;
}
.eyebrow::before{
  content:''; width:26px; height:1px; background:var(--honey-deep);
}
.hero h1{
  font-size:clamp(38px, 6.2vw, 74px);
  font-weight:900; line-height:1.22;
  max-width:900px;
  margin-bottom:28px;
}
.hero h1 .accent{ color:var(--honey-deep); }
.hero p.lead{
  font-size:17px; color:var(--muted); max-width:560px; margin-bottom:44px;
}
.tagpills{
  display:flex; flex-wrap:wrap; gap:10px; margin-bottom:52px;
}
.tagpills span{
  font-size:12.5px; font-family:'IBM Plex Mono',monospace;
  border:1px solid var(--line); padding:7px 14px;
  border-radius:20px; color:var(--ink-soft);
  background:rgba(255,255,255,0.4);
}
.tagpills span.lead-tag{
  background:var(--ink); color:var(--paper); border-color:var(--ink);
}
.hero-ctas{ display:flex; gap:16px; flex-wrap:wrap; }
.btn{
  display:inline-flex; align-items:center; gap:10px;
  padding:15px 30px; font-size:14px; font-weight:600;
  border-radius:var(--radius); letter-spacing:0.04em;
  transition:all .25s ease;
  cursor:pointer; border:none; font-family:inherit;
}
.btn-primary{ background:var(--ink); color:var(--paper); }
.btn-primary:hover{ background:var(--honey-deep); transform:translateY(-2px); }
.btn-primary.on-dark{ background:var(--honey); color:var(--ink); }
.btn-primary.on-dark:hover{ background:var(--honey-deep); color:var(--ink); }
.btn-ghost{ border:1px solid var(--ink); color:var(--ink); background:none; }
.btn-ghost:hover{ background:var(--ink); color:var(--paper); }
.btn-ghost.on-dark{ border-color:var(--paper); color:var(--paper); }
.btn-ghost.on-dark:hover{ background:var(--paper); color:var(--ink); }
.btn-secondary{ background:var(--paper); color:var(--ink); }
.btn-secondary:hover{ background:var(--honey); color:var(--ink); }

/* ---------- Section shared ---------- */
section{ position:relative; padding:110px 0; }
.section-head{ margin-bottom:64px; max-width:640px; }
.section-head .mono{ font-size:12px; color:var(--honey-deep); font-weight:600; margin-bottom:16px; display:block; }
.section-head h2{ font-size:clamp(28px,4vw,42px); font-weight:900; }
.section-head p{ margin-top:18px; color:var(--muted); font-size:15.5px; }
.dark{ background:var(--ink); color:var(--paper); }
.dark .muted{ color:var(--muted-on-ink); }
.dark .section-head p{ color:var(--muted-on-ink); }

/* ---------- Home: page link cards ---------- */
.pagelink-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:20px;
}
.pagelink-card{
  border:1px solid var(--line); background:#fff; padding:36px 30px;
  transition:transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  display:block; position:relative; overflow:hidden;
}
.pagelink-card:hover{
  transform:translateY(-6px);
  box-shadow:0 20px 40px rgba(36,27,18,0.1);
  border-color:var(--honey-deep);
}
.pagelink-card .tagno{ font-family:'IBM Plex Mono',monospace; font-size:11px; color:var(--honey-deep); }
.pagelink-card h3{ font-size:20px; margin:14px 0 10px; }
.pagelink-card p{ font-size:13.5px; color:var(--muted); }
.pagelink-card .goto{
  margin-top:22px; font-size:12px; font-weight:700; color:var(--honey-deep);
  display:flex; align-items:center; gap:6px;
}
.pagelink-card .goto svg{ transition:transform .25s ease; }
.pagelink-card:hover .goto svg{ transform:translateX(4px); }
@media(max-width:900px){ .pagelink-grid{ grid-template-columns:1fr 1fr; } }
@media(max-width:600px){ .pagelink-grid{ grid-template-columns:1fr; } }

/* ---------- Concept story (immersive) ---------- */
.story-scroller{ background:var(--ink); }
.story-full{
  min-height:100vh;
  display:flex; align-items:center;
  position:relative;
  border-bottom:1px solid var(--line-on-ink);
  overflow:hidden;
  padding:120px 0;
}
.story-full .wrap{ position:relative; z-index:2; display:block; padding-left:38%; }
.story-full .wrap > div:first-child{ display:none; }
.story-full .wrap > div:last-child{ max-width:600px; }
@media(max-width:900px){
  .story-full .wrap{ padding-left:0; }
}
.story-full .bigkanji{
  font-family:'Zen Kaku Gothic New',sans-serif;
  font-size:min(38vw, 320px); font-weight:900; line-height:1;
  color:var(--honey);
  opacity:0.14;
  position:absolute; left:-2%; top:50%; transform:translateY(-50%);
  z-index:1; pointer-events:none;
}
.story-full .num{ font-family:'IBM Plex Mono',monospace; color:var(--honey); font-size:14px; margin-bottom:20px; display:block; }
.story-full .kanji-badge{
  width:120px; height:120px; border-radius:50%;
  background:var(--honey); color:var(--ink);
  display:flex; align-items:center; justify-content:center;
  font-size:52px; font-weight:900; font-family:'Zen Kaku Gothic New',sans-serif;
  margin-bottom:32px;
}
.story-full h2{ font-size:clamp(30px,4.4vw,48px); color:var(--paper); margin-bottom:22px; }
.story-full p{ font-size:16.5px; color:var(--muted-on-ink); max-width:480px; }
.story-full.reveal-target{ opacity:0; transform:translateY(40px); transition:opacity .9s ease, transform .9s ease; }
.story-full.reveal-target.show{ opacity:1; transform:translateY(0); }

.story-final{
  min-height:70vh; display:flex; align-items:center; justify-content:center; text-align:center;
  background:var(--ink); position:relative;
}
.story-final .wrap{ position:relative; z-index:2; }
.story-final p{
  font-size:clamp(24px,3.6vw,38px); font-weight:700; color:var(--paper);
  max-width:760px; margin:0 auto 40px; line-height:1.6;
}
.scrolldown{
  position:absolute; bottom:34px; left:50%; transform:translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:8px;
  color:var(--muted-on-ink); font-size:11px; letter-spacing:0.15em;
  animation:bob 2s ease-in-out infinite;
}
@keyframes bob{
  0%,100%{ transform:translate(-50%,0); }
  50%{ transform:translate(-50%,8px); }
}

/* ---------- Service ---------- */
.service-grid{
  display:grid; grid-template-columns:1.3fr 1fr 1fr; gap:20px;
}
.service-card{
  border:1px solid var(--line);
  padding:34px 28px;
  background:#fff;
  transition:transform .25s ease, box-shadow .25s ease;
  position:relative;
}
.service-card:hover{ transform:translateY(-4px); box-shadow:0 14px 30px rgba(36,27,18,0.08); }
.service-card.lead{
  grid-row:span 2;
  background:#fff; color:var(--ink);
  border:1px solid var(--line);
  display:flex; flex-direction:column; justify-content:space-between;
}
.service-card .tagno{ font-family:'IBM Plex Mono',monospace; font-size:11px; color:var(--honey-deep); }
.service-card.lead .tagno{
  display:inline-block; background:var(--honey-deep); color:#fff;
  padding:4px 10px; border-radius:20px; letter-spacing:0.1em;
}
.service-card h3{ font-size:21px; margin:16px 0 12px; }
.service-card.lead h3{ font-size:27px; }
.service-card p{ font-size:13.8px; color:var(--muted); }
.service-card.lead p{ color:var(--muted); }
.service-card .kanji-mark{
  position:absolute; top:24px; right:28px; font-size:26px; font-weight:900;
  color:var(--honey-pale); opacity:0.7; font-family:'Zen Kaku Gothic New',sans-serif;
}
.service-card.lead .kanji-mark{ color:var(--honey-deep); opacity:1;}
@media(max-width:900px){
  .service-grid{ grid-template-columns:1fr 1fr; }
  .service-card.lead{ grid-column:span 2; grid-row:auto; }
}
@media(max-width:600px){
  .service-grid{ grid-template-columns:1fr; }
  .service-card.lead{ grid-column:auto; }
}

/* ---------- Strength ---------- */
.strength-grid{
  display:grid; grid-template-columns:1fr 1fr; gap:24px;
}
.strength-card{
  padding:40px; border:1px solid var(--line); background:var(--paper-warm);
}
.strength-card.alt{ background:var(--ink); color:var(--paper); border-color:var(--ink); }
.strength-card h3{ font-size:20px; margin-bottom:18px; }
.strength-card p{ font-size:14px; color:var(--muted); margin-bottom:22px; }
.strength-card.alt p{ color:var(--muted-on-ink); }
.chiplist{ display:flex; flex-direction:column; gap:12px; }
.chiplist div{
  display:flex; align-items:center; gap:10px; font-size:13.5px; font-weight:500;
}
.chiplist div::before{
  content:''; width:6px; height:6px; background:var(--honey-deep); border-radius:50%; flex-shrink:0;
}
.strength-card.alt .chiplist div::before{ background:var(--honey); }
.divider-line{ height:1px; background:var(--line-on-ink); margin:22px 0; }
.strength-card.alt .tagno{ font-family:'IBM Plex Mono',monospace; font-size:11.5px; color:var(--honey); }
.track-record{ font-size:15px; font-weight:700; margin-bottom:8px; }

/* ---------- About ---------- */
.about-grid{
  display:grid; grid-template-columns:200px 1fr; border-top:1px solid var(--line);
}
.about-row{ display:contents; }
.about-row .k{
  padding:22px 0; font-size:13px; font-weight:700; color:var(--honey-deep);
  font-family:'IBM Plex Mono',monospace; border-bottom:1px solid var(--line);
}
.about-row .v{
  padding:22px 0; font-size:15px; border-bottom:1px solid var(--line);
}
@media(max-width:640px){
  .about-grid{ grid-template-columns:1fr; }
  .about-row .k{ border-bottom:none; padding-bottom:6px; }
  .about-row .v{ padding-top:0; }
}

/* ---------- Message ---------- */
.message-wrap{
  display:grid; grid-template-columns:0.9fr 1.4fr; gap:60px; align-items:start;
}
.message-name{ margin-top:26px; }
.message-name .role{ font-size:12.5px; color:var(--muted-on-ink); }
.message-name .person{ font-size:24px; font-weight:900; margin-top:6px; }
.message-body p{ margin-bottom:20px; font-size:15.5px; color:var(--muted-on-ink); }
@media(max-width:800px){ .message-wrap{ grid-template-columns:1fr; gap:32px; } }

/* ---------- Contact ---------- */
.contact-box{
  display:grid; grid-template-columns:1fr 1fr; gap:40px;
  border:1px solid var(--line); padding:52px; background:var(--paper-warm);
}
.contact-box h3{ font-size:26px; margin-bottom:14px; }
.contact-box p{ color:var(--muted); font-size:14.5px; margin-bottom:28px; }
.contact-detail{ display:flex; flex-direction:column; gap:16px; font-size:14.5px; }
.contact-detail .lbl{ font-family:'IBM Plex Mono',monospace; font-size:11px; color:var(--honey-deep); display:block; margin-bottom:4px; }
@media(max-width:760px){ .contact-box{ grid-template-columns:1fr; padding:32px; } }

footer{
  background:var(--ink); color:var(--muted-on-ink);
  padding:44px 0; font-size:12.5px;
}
.footer-inner{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:16px; }

.reveal{ opacity:0; transform:translateY(24px); transition:opacity .7s ease, transform .7s ease; }
.reveal.show{ opacity:1; transform:translateY(0); }