*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --ink:#111213;
  --ink-2:#2a2b2e;
  --ink-3:#5a5d63;
  --ink-4:#8b8e94;
  --bg:#fdfaf5;
  --bg-2:#f4f2ed;
  --bg-3:#ebe8e1;
  --line:#dcd9d2;
  --line-2:#e8e6e1;
  --accent:#8a6a2a;
  --accent-dark:#6b5220;
  --max:1280px;
}
html{scroll-behavior:smooth;scroll-padding-top:72px;-webkit-text-size-adjust:100%;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;}
}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:'Noto Sans JP',system-ui,-apple-system,sans-serif;
  font-weight:400;
  line-height:1.8;
  font-feature-settings:"palt" 1;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;}
img{display:block;max-width:100%;height:auto;}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}

.wrap{max-width:var(--max);margin:0 auto;padding:0 40px;}
@media(max-width:720px){.wrap{padding:0 20px;}}

/* ─── HEADER ─── */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--bg);
  border-bottom:1px solid var(--line-2);
}
.site-header > nav{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;max-width:var(--max);margin:0 auto;padding:0 40px;
}
.nav-logo{display:flex;align-items:center;text-decoration:none;}
.nav-logo img{height:48px;width:auto;}
.nav-toggle{
  display:none;background:none;border:none;cursor:pointer;
  flex-direction:column;gap:5px;padding:8px;
}
.nav-toggle span{width:22px;height:1.5px;background:var(--ink);transition:.2s;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}
.nav-links{display:flex;gap:32px;list-style:none;align-items:center}
.nav-links a{
  font-size:13px;font-weight:500;letter-spacing:.02em;
  color:var(--ink-2);text-decoration:none;transition:color .15s;
  padding:8px 0;
}
.nav-links a:hover,.nav-links a:focus-visible{color:var(--accent);}
.nav-links a.nav-cta{
  font-size:13px;font-weight:500;letter-spacing:.02em;
  color:var(--bg);background:var(--ink);
  padding:11px 28px;text-decoration:none;transition:background .15s;
}
.nav-links a.nav-cta:hover{color:var(--bg);background:var(--accent);}

/* ─── HERO ─── */
.hero{
  background:var(--bg);
  padding:120px 0 96px;
  border-bottom:1px solid var(--line-2);
  position:relative;overflow:hidden;
  min-height:60vh;
}
.hero-logo-deco{
  position:absolute;left:auto;right:-5%;top:50%;transform:translateY(-50%);
  width:42%;max-width:560px;max-height:60vh;height:auto;
  opacity:1;pointer-events:none;z-index:0;
  object-fit:contain;
}
@media(max-width:880px){.hero-logo-deco{display:none;}}
.hero-inner{position:relative;z-index:1;}
.hero-inner > div{max-width:760px;}
.hero-eyebrow{
  font-family:'Inter',sans-serif;
  font-size:11px;font-weight:600;letter-spacing:.18em;
  color:var(--accent);text-transform:uppercase;
  margin-bottom:28px;
}
.hero h1{
  font-family:'Shippori Mincho',serif;
  font-size:clamp(30px,4.2vw,54px);
  font-weight:600;line-height:1.4;
  color:var(--ink);letter-spacing:.01em;
  margin-bottom:32px;
  word-break:keep-all;overflow-wrap:break-word;line-break:strict;
}
.hero h1 em{font-style:normal;color:var(--accent);}
.hero h1 .nb{display:inline-block;}
.hero-sub{
  font-size:15px;line-height:2;color:var(--ink-2);
  max-width:560px;margin-bottom:44px;font-weight:400;
}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;align-items:center;}
.btn-primary{
  font-size:14px;font-weight:500;letter-spacing:.06em;
  color:var(--bg)!important;background:var(--ink);
  padding:17px 34px;text-decoration:none;transition:background .15s;
  border:none;cursor:pointer;display:inline-block;
}
.btn-primary:hover{background:var(--accent);}
.btn-outline{
  font-size:13px;font-weight:500;letter-spacing:.04em;
  color:var(--ink-2);background:transparent;
  padding:14px 0;text-decoration:none;
  display:inline-flex;align-items:center;gap:10px;
  transition:color .15s,gap .15s;
}
.btn-outline::after{content:'→';transition:transform .15s;font-weight:400;}
.btn-outline:hover{color:var(--accent);}
.btn-outline:hover::after{transform:translateX(4px);}
@media(max-width:880px){
  .hero{padding:64px 0 56px;}
}

/* ─── SECTION BASE ─── */
.sec{padding:112px 0;border-bottom:1px solid var(--line-2);}
@media(max-width:880px){.sec{padding:72px 0;}}
.sec-dark{background:var(--ink);color:var(--bg);border-bottom-color:var(--ink-2);}
.sec-bg{background:var(--bg-2);}
.sec-head{margin-bottom:64px;}
@media(max-width:880px){.sec-head{margin-bottom:40px;}}
.sec-label{
  font-family:'Inter',sans-serif;
  font-size:11px;font-weight:600;letter-spacing:.2em;
  color:var(--accent);text-transform:uppercase;
  margin-bottom:18px;
}
.sec-dark .sec-label{color:#c9a96e;}
.sec-title{
  font-family:'Shippori Mincho',serif;
  font-size:clamp(28px,3.2vw,44px);font-weight:600;
  line-height:1.5;letter-spacing:.02em;color:var(--ink);
  max-width:760px;
}
.sec-dark .sec-title{color:var(--bg);}
.sec-lead{
  font-size:14px;line-height:2;color:var(--ink-2);
  max-width:680px;margin-top:24px;
}
.sec-dark .sec-lead{color:rgba(255,255,255,.78);}

/* ─── STRENGTHS ─── */
.strengths-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
.strength{background:var(--bg);padding:48px 36px;}
.strength-num{
  font-family:'Inter',sans-serif;
  font-size:12px;font-weight:600;letter-spacing:.16em;
  color:var(--accent);margin-bottom:28px;
}
.strength h3{
  font-family:'Shippori Mincho',serif;
  font-size:19px;font-weight:600;color:var(--ink);
  margin-bottom:16px;letter-spacing:.02em;line-height:1.55;
}
.strength p{
  font-size:13px;line-height:1.95;color:var(--ink-2);
}
@media(max-width:880px){.strengths-grid{grid-template-columns:1fr;}}

/* ─── ABOUT ─── */
.about-grid{display:grid;grid-template-columns:1fr;gap:80px;align-items:start;}
.about-body p{
  font-size:14px;line-height:2;color:var(--ink-2);margin-bottom:18px;
}
.about-quote{
  font-family:'Shippori Mincho',serif;
  font-size:20px;font-weight:500;line-height:1.85;
  color:var(--ink);letter-spacing:.02em;
}
@media(max-width:880px){
  .about-quote{padding-top:28px;border-top:1px solid var(--ink);}
}
@media(max-width:880px){.about-grid{grid-template-columns:1fr;gap:48px;}}

/* ─── CLIENTS ─── */
.clients-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
@media(max-width:1000px){.clients-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:600px){.clients-grid{grid-template-columns:1fr;}}
.client-card{background:var(--bg);padding:36px 32px;}
.client-icon{
  width:32px;height:32px;margin-bottom:24px;
  filter:invert(35%) sepia(40%) saturate(680%) hue-rotate(15deg);
}
.client-card h3{
  font-family:'Shippori Mincho',serif;
  font-size:16px;font-weight:600;color:var(--ink);
  margin-bottom:12px;letter-spacing:.02em;
}
.client-card p{
  font-size:13px;line-height:1.95;color:var(--ink-3);
}

/* ─── GROUP / DIGITAL (2col w/ stacked cards) ─── */
.group-inner{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center;}
.group-cards{display:flex;flex-direction:column;gap:16px;}
.group-card{
  display:grid;grid-template-columns:72px 1fr;gap:20px;align-items:center;
  padding:24px 28px;
  background:var(--bg-2);
  border:1px solid var(--line);
}
.sec-bg .group-card{background:var(--bg);}
.group-num{
  font-family:'Shippori Mincho',serif;
  font-size:32px;font-weight:600;color:var(--accent);
  letter-spacing:.04em;line-height:1;
}
.group-icon{
  width:32px;height:32px;
  filter:invert(45%) sepia(70%) saturate(450%) hue-rotate(15deg) brightness(85%);
}
.group-card h3{
  font-family:'Shippori Mincho',serif;
  font-size:16px;font-weight:600;color:var(--ink);
  margin-bottom:8px;letter-spacing:.02em;
}
.group-card p{
  font-size:13px;line-height:1.85;color:var(--ink-3);margin:0;
}
/* dark section variant */
.sec-dark .group-card{
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.08);
}
.sec-dark .group-card h3{color:var(--bg);}
.sec-dark .group-card p{color:rgba(255,255,255,.65);}
@media(max-width:880px){
  .group-inner{grid-template-columns:1fr;gap:48px;}
}

/* ─── SERVICES (dark, tabs) ─── */
.services-sec{background:var(--ink);color:var(--bg);}
.services-sec .sec-title{color:var(--bg);}
.tab-row{
  display:flex;gap:0;margin-bottom:48px;flex-wrap:wrap;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.tab-btn{
  font-family:inherit;
  font-size:13px;font-weight:500;letter-spacing:.02em;
  padding:18px 24px;background:none;border:none;cursor:pointer;
  color:rgba(255,255,255,.6);
  border-bottom:2px solid transparent;margin-bottom:-1px;
  transition:color .15s,border-color .15s;
}
.tab-btn.active{color:var(--bg);border-bottom-color:var(--accent);}
.tab-btn:hover,.tab-btn:focus-visible{color:var(--bg);}
.tab-pane{display:none;}
.tab-pane.active{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.08);}
@media(max-width:1000px){.tab-pane.active{grid-template-columns:repeat(2,1fr);}}
@media(max-width:600px){.tab-pane.active{grid-template-columns:1fr;}}
.svc-card{background:var(--ink);padding:32px 28px;}
.svc-icon{
  width:28px;height:28px;margin-bottom:22px;display:block;
  filter:invert(60%) sepia(60%) saturate(380%) hue-rotate(8deg) brightness(1.05);
  opacity:.95;
}
.svc-card h3{
  font-family:'Shippori Mincho',serif;
  font-size:16px;font-weight:600;
  color:var(--bg);margin-bottom:14px;letter-spacing:.02em;line-height:1.5;
}
.svc-card p{
  font-size:13px;line-height:1.95;color:rgba(255,255,255,.75);
}

/* ─── REGULATORY ─── */
.pillars{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);
}
.pillar{background:var(--bg);padding:40px 28px;}
.pillar-num{
  font-family:'Inter',sans-serif;
  font-size:12px;font-weight:600;letter-spacing:.16em;
  color:var(--accent);margin-bottom:24px;
}
.pillar-en{
  display:block;
  font-family:'Inter',sans-serif;
  font-size:11px;letter-spacing:.04em;
  color:var(--ink-4);
  margin-bottom:12px;line-height:1.5;font-weight:500;
}
.pillar h3{
  font-family:'Shippori Mincho',serif;
  font-size:17px;font-weight:600;color:var(--ink);
  margin-bottom:14px;letter-spacing:.02em;
}
.pillar p{
  font-size:13px;line-height:1.95;color:var(--ink-3);
}
@media(max-width:1000px){.pillars{grid-template-columns:repeat(2,1fr);}}
@media(max-width:600px){.pillars{grid-template-columns:1fr;}}

/* ─── CASES ─── */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:48px 40px;}
@media(max-width:880px){.case-grid{grid-template-columns:1fr;gap:40px;}}
.case-card{
  text-decoration:none;color:inherit;display:block;
  transition:transform .25s;
}
.case-card:hover .case-img{transform:scale(1.02);}
.case-card:hover h3{color:var(--accent);}
.case-card:hover .case-arrow{gap:14px;color:var(--accent);}
.case-img-wrap{
  width:100%;aspect-ratio:16/10;overflow:hidden;background:#fff;margin-bottom:24px;
  display:flex;align-items:center;justify-content:center;padding:24px;
}
.case-img{
  max-width:100%;max-height:100%;width:auto;height:auto;
  object-fit:contain;display:block;
  transition:transform .4s ease;
}
.case-meta{
  display:flex;align-items:center;gap:14px;
  font-family:'Inter',sans-serif;
  font-size:11px;font-weight:600;letter-spacing:.16em;
  color:var(--accent);margin-bottom:14px;text-transform:uppercase;
}
.case-meta::before{content:'';width:24px;height:1px;background:var(--accent);}
.case-card h3{
  font-family:'Shippori Mincho',serif;
  font-size:19px;font-weight:600;line-height:1.6;
  color:var(--ink);margin-bottom:14px;letter-spacing:.02em;
  transition:color .15s;
}
.case-card p{
  font-size:13.5px;line-height:1.95;color:var(--ink-2);margin-bottom:20px;
}
.case-arrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:'Inter',sans-serif;font-size:12px;font-weight:600;letter-spacing:.12em;
  color:var(--ink-2);text-transform:uppercase;
  transition:color .15s,gap .15s;
}

/* ─── COMPANY ─── */
.company-list{margin:0;}
.company-row{
  display:grid;grid-template-columns:200px 1fr;gap:32px;
  padding:24px 0;border-bottom:1px solid var(--line);
}
.company-row:first-child{border-top:1px solid var(--line);}
.company-row dt{
  font-family:'Shippori Mincho',serif;
  font-size:14px;font-weight:600;letter-spacing:.08em;
  color:var(--accent);padding-top:2px;
}
.company-row dd{
  margin:0;font-size:15px;line-height:1.9;color:var(--ink);
}
@media(max-width:680px){
  .company-row{grid-template-columns:1fr;gap:8px;}
}

/* ─── PARTNERSHIP ─── */
#partnership .sec-lead{max-width:none;}

/* ─── CONTACT ─── */
.contact-sec{
  background:var(--ink);color:var(--bg);
  padding:120px 0;border-bottom:none;
}
.contact-inner{display:grid;grid-template-columns:1fr auto;gap:64px;align-items:center;}
.contact-sec h2{
  font-family:'Shippori Mincho',serif;
  font-size:clamp(28px,3.4vw,44px);font-weight:600;
  color:var(--bg);letter-spacing:.02em;margin-bottom:18px;line-height:1.4;
}
.contact-sec p{
  font-size:14px;color:rgba(255,255,255,.78);line-height:1.95;max-width:520px;
}
.btn-light{
  display:inline-block;font-size:13px;font-weight:500;letter-spacing:.04em;
  color:var(--ink)!important;background:var(--bg);
  padding:18px 36px;text-decoration:none;transition:background .15s,color .15s;
  white-space:nowrap;
}
.btn-light:hover{background:var(--accent);color:var(--bg)!important;}
@media(max-width:880px){
  .contact-sec{padding:72px 0;}
  .contact-inner{grid-template-columns:1fr;gap:32px;}
}

/* ─── FOOTER ─── */
footer{
  background:var(--ink);color:rgba(255,255,255,.7);
  padding:56px 0 40px;border-top:1px solid rgba(255,255,255,.08);
}
.footer-grid{
  display:grid;grid-template-columns:1fr auto;gap:48px;align-items:start;
  padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand img{height:64px;width:auto;margin-bottom:12px;filter:brightness(0) invert(1);}
.footer-sub{
  font-size:11px;color:rgba(255,255,255,.5);letter-spacing:.06em;
}
.footer-sub-link{display:inline-block;margin-top:28px;}
.footer-brand img.footer-sub-logo{height:20px;margin-bottom:0;display:block;}
.footer-nav{display:flex;gap:36px;flex-wrap:wrap;}
.footer-nav a{
  font-size:13px;color:rgba(255,255,255,.82);letter-spacing:.02em;
  text-decoration:none;transition:color .15s;
}
.footer-nav a:hover,.footer-nav a:focus-visible{color:#c9a96e;}
.footer-copy{
  margin-top:24px;font-family:'Inter',sans-serif;
  font-size:11px;color:rgba(255,255,255,.5);letter-spacing:.06em;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-privacy{
  color:rgba(255,255,255,.7);text-decoration:none;transition:color .15s;
}
.footer-privacy:hover,.footer-privacy:focus-visible{color:#c9a96e;}
@media(max-width:720px){
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-nav{gap:20px 28px;}
}

/* ─── NAV MOBILE ─── */
@media(max-width:880px){
  .site-header > nav{padding:0 20px;}
  .nav-toggle{display:flex;}
  .nav-links{
    position:absolute;top:72px;left:0;right:0;
    flex-direction:column;gap:0;
    background:var(--bg);
    border-bottom:1px solid var(--line);
    padding:8px 20px 20px;
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:.2s;
  }
  .nav-links.open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .nav-links li{width:100%;}
  .nav-links a{display:block;padding:14px 0;border-bottom:1px solid var(--line-2);}
  .nav-links a.nav-cta{background:var(--ink);padding:14px 0;text-align:center;margin-top:8px;}
}