:root{
  --navy:#0f2540; --navy-2:#183a5f; --gold:#c9a24b; --gold-2:#e0c079;
  --ink:#1a2233; --muted:#5b6675; --line:#e5e8ec;
  --bg:#ffffff; --bg-soft:#f6f8fb; --card:#ffffff;
  --gold-text:#8a6d1f; /* darker gold for small text on light (WCAG AA) */
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --navy:#0c1a2e; --navy-2:#12263f; --gold:#d4af5a; --gold-2:#e8cf8a;
    --ink:#e9edf3; --muted:#9aa6b6; --line:#22304a;
    --bg:#0a1420; --bg-soft:#0e1b2b; --card:#101f31;
    --gold-text:#e0c079;
  }
}
:root[data-theme="dark"]{
  --navy:#0c1a2e; --navy-2:#12263f; --gold:#d4af5a; --gold-2:#e8cf8a;
  --ink:#e9edf3; --muted:#9aa6b6; --line:#22304a;
  --bg:#0a1420; --bg-soft:#0e1b2b; --card:#101f31;
  --gold-text:#e0c079;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Helvetica Neue",Arial,"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}

/* header */
header{position:sticky;top:0;z-index:50;background:var(--bg);
  background:color-mix(in srgb,var(--bg) 88%,transparent);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px;position:relative}
.menu-btn{display:none;background:transparent;border:1px solid var(--line);border-radius:8px;
  padding:7px 12px;font-size:17px;line-height:1;color:var(--ink);cursor:pointer}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.5px;font-size:19px;white-space:nowrap}
.brand .mark{width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,var(--navy),var(--navy-2));
  color:var(--gold-2);display:grid;place-items:center;font-size:15px;font-weight:800;flex:none}
.brand .logo{height:40px;width:auto;border-radius:8px;display:block;flex:none}

/* hero logo panel (main pic) */
.hero .wrap.has-logo{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
@media(max-width:860px){.hero .wrap.has-logo{grid-template-columns:1fr;gap:34px}}
.hero-logo{background:#f3f3f3;border-radius:20px;padding:26px;box-shadow:0 18px 50px rgba(0,0,0,.28);
  display:grid;place-items:center}
.hero-logo img{width:100%;max-width:360px;height:auto;display:block;border-radius:10px}
@media(max-width:860px){.hero-logo{max-width:340px;margin:0 auto}}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{font-size:14px;color:var(--muted);font-weight:600}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
.nav-ctl{display:flex;gap:10px;align-items:center}
.btn{display:inline-block;padding:11px 20px;border-radius:8px;font-weight:700;font-size:14px;cursor:pointer;border:0}
.btn-gold{background:linear-gradient(135deg,var(--gold),var(--gold-2));color:#241c05}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--ink)}
.lang{font-size:13px;font-weight:700;border:1px solid var(--line);border-radius:8px;
  padding:7px 12px;cursor:pointer;background:transparent;color:var(--ink)}
@media(max-width:820px){
  .menu-btn{display:block;order:-1}
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;
    gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:6px 20px;
    box-shadow:0 12px 30px rgba(0,0,0,.12)}
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 2px;border-bottom:1px solid var(--line);font-size:15px}
  .nav-links a:last-child{border-bottom:0}
}
@media(max-width:430px){
  .brand .brandtext{display:none}
  .nav{height:60px}
  .btn{padding:10px 15px;font-size:13px}
  .lang{padding:7px 10px}
}

/* hero */
.hero{background:linear-gradient(160deg,var(--navy),var(--navy-2));color:#eef2f8;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,162,75,.28),transparent 62%)}
.hero .wrap{padding:78px 20px 84px;position:relative;z-index:2}
.eyebrow{color:var(--gold-2);font-weight:700;letter-spacing:2px;text-transform:uppercase;font-size:12.5px;margin-bottom:16px}
.hero h1{font-size:clamp(30px,5vw,50px);line-height:1.12;font-weight:800;letter-spacing:-.5px;max-width:16ch}
.hero p{margin-top:20px;font-size:18px;max-width:56ch;color:#cbd6e6}
.hero .cta{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap}
.trust{margin-top:40px;display:flex;gap:28px;flex-wrap:wrap;color:#9fb0c6;font-size:13.5px}
.trust b{color:#fff;font-size:20px;display:block;font-weight:800}

/* page hero (subpages) */
.page-hero{background:linear-gradient(160deg,var(--navy),var(--navy-2));color:#eef2f8}
.page-hero .wrap{padding:56px 20px 60px}
.page-hero h1{font-size:clamp(26px,4vw,40px);font-weight:800;letter-spacing:-.4px}
.page-hero p{margin-top:12px;color:#cbd6e6;font-size:16px;max-width:60ch}
.crumb{font-size:13px;color:#9fb0c6;margin-bottom:14px}
.crumb a:hover{color:var(--gold-2)}

/* sections */
section{padding:70px 0}
.sec-head{text-align:center;max-width:680px;margin:0 auto 46px}
.sec-head .eyebrow{color:var(--gold-text)}
.sec-head h2{font-size:clamp(24px,3.4vw,34px);font-weight:800;letter-spacing:-.4px}
.sec-head p{color:var(--muted);margin-top:12px;font-size:16px}

.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:860px){.pillars{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:28px;transition:.2s}
.card:hover{transform:translateY(-3px);border-color:var(--gold)}
.card .ic{width:46px;height:46px;border-radius:10px;background:var(--bg-soft);display:grid;place-items:center;font-size:22px;margin-bottom:16px}
.card h3{font-size:19px;font-weight:800;margin-bottom:8px}
.card p{color:var(--muted);font-size:14.5px}
.card .tag{display:inline-block;margin-top:14px;font-size:12px;font-weight:700;color:var(--gold-text);
  border:1px solid var(--gold);border-radius:20px;padding:4px 12px}

.soft{background:var(--bg-soft)}
.wholesale{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
@media(max-width:860px){.wholesale{grid-template-columns:1fr}}
.wholesale h2{font-size:clamp(23px,3vw,32px);font-weight:800;letter-spacing:-.3px;margin-bottom:16px}
.wlist{list-style:none;margin-top:18px}
.wlist li{padding:12px 0;border-bottom:1px solid var(--line);display:flex;gap:12px;align-items:flex-start;font-size:15px}
.wlist li::before{content:"✓";color:var(--gold);font-weight:800;flex:none}
.quote-box{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:30px}
.quote-box h3{font-size:18px;font-weight:800;margin-bottom:6px}
.quote-box p{color:var(--muted);font-size:14px;margin-bottom:18px}

/* catalog */
.cat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
@media(max-width:760px){.cat-grid{grid-template-columns:1fr}}
.cat-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:26px}
.cat-card .ic{font-size:30px;margin-bottom:12px}
.cat-card h3{font-size:18px;font-weight:800;margin-bottom:8px}
.cat-card ul{list-style:none;margin-top:10px}
.cat-card li{font-size:14px;color:var(--muted);padding:5px 0;border-bottom:1px dashed var(--line)}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:12px;margin-top:8px}
.table-wrap .moq-table,.table-wrap .legal-table{margin:0;border:0;border-radius:0}
.moq-table{width:100%;border-collapse:collapse;margin-top:8px;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;min-width:520px}
.moq-table th,.moq-table td{text-align:left;padding:13px 16px;font-size:14px;border-bottom:1px solid var(--line)}
.moq-table th{background:var(--bg-soft);font-weight:800;color:var(--ink)}
.moq-table tr:last-child td{border-bottom:0}

/* form */
form{display:grid;gap:14px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:560px){.row{grid-template-columns:1fr}}
label{font-size:13px;font-weight:700;color:var(--muted);display:block;margin-bottom:6px}
input,textarea,select{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:9px;
  background:var(--bg);color:var(--ink);font-size:16px;font-family:inherit}
input:focus,textarea:focus,select:focus{outline:2px solid var(--gold);border-color:transparent}
textarea{min-height:110px;resize:vertical}
.form-note{font-size:12.5px;color:var(--muted);text-align:center}
.form-ok{display:none;background:#123d24;color:#c7f0d4;border-radius:10px;padding:16px;text-align:center;font-weight:600}

/* about / prose */
.about{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
@media(max-width:860px){.about{grid-template-columns:1fr}}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:8px}
.fact{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px}
.fact b{display:block;font-size:13px;color:var(--gold);font-weight:800;margin-bottom:4px;text-transform:uppercase;letter-spacing:.5px}
.fact span{font-size:15px}
.prose{max-width:760px;margin:0 auto}
.prose h2{font-size:20px;font-weight:800;margin:28px 0 10px}
.prose p{color:var(--muted);margin-bottom:12px;font-size:15px}
.legal-table{width:100%;border-collapse:collapse;margin:10px 0 24px;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.legal-table th,.legal-table td{text-align:left;padding:12px 14px;font-size:14px;border-bottom:1px solid var(--line);vertical-align:top}
.legal-table th{background:var(--bg-soft);width:34%;font-weight:700}
.legal-table tr:last-child th,.legal-table tr:last-child td{border-bottom:0}
.todo{background:#fff6d6;color:#5a4a00;padding:0 5px;border-radius:4px;font-weight:700}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .todo{background:#4a3d00;color:#ffe9a3}}
:root[data-theme="dark"] .todo{background:#4a3d00;color:#ffe9a3}

footer{background:var(--navy);color:#b9c6d8;padding:40px 0}
.foot{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
.foot .brand{color:#fff}
.foot a{color:#b9c6d8}.foot a:hover{color:var(--gold-2)}
.foot small{color:#7f90a6}
.foot-links{display:flex;gap:22px;font-size:14px;flex-wrap:wrap}

/* bilingual visibility — hide only the INACTIVE language (html carries data-lang);
   preserves each element's natural display, no display:revert side effects */
html[data-lang="en"] [data-ja]{display:none}
html[data-lang="ja"] [data-en]{display:none}