:root{
  --bg:#07080a;
  --gold:#d4b45a;
  --gold2:#b8943d;
  --ink:#f4ead3;
  --muted:#9b927c;
  --card:#101217;
  --line:#2c281c;
  --warn-bg:#16140c;
  --warn-line:#5a4a22;
  --bad:#c45c5c;
  --bad-bg:#140c0c;
  --ok-bg:#0c140f;
  --ok-line:#3a5a44;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 "Avenir Next","Segoe UI",Helvetica,Arial,sans-serif}
a{color:var(--gold);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
header{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:14px 28px;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;
  background:rgba(7,8,10,.92);backdrop-filter:blur(10px)
}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);letter-spacing:.22em;font-weight:700;font-size:13px;text-decoration:none}
.brand:hover{text-decoration:none;color:var(--gold)}
.brand img{width:40px;height:40px;border-radius:8px;object-fit:cover;border:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.nav a{color:var(--ink);font-size:13px;letter-spacing:.12em;text-transform:uppercase;text-decoration:none}
.nav a:hover{color:var(--gold);text-decoration:none}
.nav a.nav-register{
  background:var(--gold);color:#07080a;padding:8px 14px;border-radius:999px;font-weight:700;letter-spacing:.08em
}
.nav a.nav-register:hover{background:var(--ink);color:#07080a}
.langs{display:flex;gap:4px}
.langs button{
  background:transparent;border:1px solid transparent;color:var(--muted);font:11px/1 inherit;
  letter-spacing:.08em;padding:6px 8px;border-radius:999px;cursor:pointer
}
.langs button.on,.langs button:hover{color:var(--gold);border-color:var(--gold)}
.hero{width:100%;overflow:hidden;max-height:72vh;background:#050608}
.hero img{width:100%;height:72vh;object-fit:cover;object-position:center 40%}
.wrap{max-width:1080px;margin:0 auto;padding:36px 24px 64px}
.kicker{color:var(--gold);letter-spacing:.28em;font-size:12px;font-weight:700;margin:8px 0 10px}
h1{font-size:clamp(36px,6vw,64px);letter-spacing:-.03em;margin:0 0 12px;font-weight:650;line-height:1.05}
h2{font-size:clamp(22px,3vw,28px);letter-spacing:-.02em;margin:0 0 12px;font-weight:650}
h3{font-size:18px;margin:0 0 8px;font-weight:650}
.catch{font-size:clamp(18px,2.2vw,24px);color:var(--ink);margin:0 0 16px;max-width:34em}
.what{color:var(--muted);max-width:42em;margin:0 0 28px}
.note,.selfresp{
  border:1px solid var(--gold);background:var(--warn-bg);color:var(--ink);
  padding:14px 16px;border-radius:12px;font-size:15px;font-weight:600;margin:0 0 14px;line-height:1.5
}
.banner,.warn{
  border:1px solid #6a3a3a;color:#f0c8c8;background:var(--bad-bg);
  padding:14px 16px;border-radius:12px;font-size:15px;margin:0 0 16px;line-height:1.5
}
.mediate{
  border:1px solid var(--warn-line);background:var(--warn-bg);color:var(--ink);
  padding:14px 16px;border-radius:12px;font-size:15px;font-weight:600;margin:0 0 16px;line-height:1.5
}
.ok{
  border:1px solid var(--gold);padding:12px 14px;border-radius:12px;font-size:15px;margin:0 0 16px;line-height:1.5
}
.shelf{margin:0 0 36px;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#0a0b0d}
.shelf img{width:100%;height:auto}
.section{margin:48px 0}
.section-label{color:var(--gold);letter-spacing:.22em;font-size:12px;font-weight:700;text-transform:uppercase;margin:0 0 16px}
.grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:640px){.grid{grid-template-columns:1fr 1fr}}
@media(min-width:960px){.grid{grid-template-columns:1fr 1fr 1fr}}
.grid-2{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:720px){.grid-2{grid-template-columns:1fr 1fr}}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;
  display:flex;flex-direction:column;min-height:220px;transition:border-color .2s, transform .2s
}
.card:hover{border-color:var(--gold);transform:translateY(-2px)}
.card .thumb{width:48px;height:48px;border-radius:10px;object-fit:cover;border:1px solid var(--line);margin-bottom:12px}
.tag{display:inline-block;border:1px solid var(--gold);color:var(--gold);padding:2px 8px;border-radius:999px;font-size:11px;letter-spacing:.08em;margin:0 6px 10px 0;width:fit-content}
.tag-row{display:flex;flex-wrap:wrap;gap:0;margin-bottom:4px}
.card h2,.card h3{font-size:20px;margin:0 0 8px;letter-spacing:-.02em}
.card p{color:var(--muted);margin:0 0 12px;font-size:14px}
.price{color:var(--gold);font-weight:700;margin-top:auto;margin-bottom:12px;font-size:18px}
.btn,.btn-fat{
  display:inline-block;padding:10px 14px;border:1px solid var(--gold);border-radius:999px;
  color:var(--ink);background:transparent;font-size:13px;letter-spacing:.06em;width:fit-content;
  cursor:pointer;text-decoration:none;font-family:inherit
}
.btn:hover,.btn-fat:hover{background:var(--gold);color:#07080a;text-decoration:none}
.btn-fat{
  padding:16px 28px;font-size:16px;font-weight:700;letter-spacing:.08em;text-transform:uppercase
}
.btn-solid{background:var(--gold);color:#07080a;font-weight:700}
.btn-solid:hover{background:var(--ink);color:#07080a}
.btn-row{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0}
.strip{
  border:1px solid var(--gold);background:linear-gradient(180deg,#16140c,#101217);
  border-radius:16px;padding:28px 24px;margin:0 0 32px
}
.strip h2{margin-bottom:8px}
.strip p{margin:0 0 14px;max-width:46em}
.strip-sell{border-color:var(--gold2)}
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 16px}
.tab{
  background:transparent;border:1px solid var(--line);color:var(--ink);padding:12px 18px;
  border-radius:999px;cursor:pointer;font:15px/1 inherit;letter-spacing:.04em
}
.tab.on,.tab:hover{border-color:var(--gold);color:var(--gold)}
.paste-line{
  border:1px dashed var(--line);padding:12px 14px;border-radius:12px;color:var(--ink);
  margin:0 0 20px;font-size:15px;line-height:1.5
}
.how-box{
  border:1px solid var(--gold);background:#0c0d10;border-radius:16px;padding:20px 22px;margin:0 0 24px
}
.how-box ol{margin:8px 0 0;padding-left:22px}
.how-box li{margin:0 0 10px}
.steps{display:grid;gap:16px;grid-template-columns:1fr;margin:0 0 20px}
@media(min-width:800px){.steps{grid-template-columns:1fr 1fr 1fr 1fr}}
.step{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px}
.step .n{color:var(--gold);font-size:28px;font-weight:700;letter-spacing:-.04em;display:block;margin-bottom:8px}
.use-row{display:grid;gap:12px;grid-template-columns:1fr 1fr;margin:0 0 8px}
@media(min-width:720px){.use-row{grid-template-columns:repeat(6,1fr)}}
.use-card{
  background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;text-decoration:none;color:var(--ink)
}
.use-card:hover{border-color:var(--gold);text-decoration:none}
.use-card strong{display:block;color:var(--gold);margin-bottom:6px}
.use-card span{display:block;color:var(--muted);font-size:13px}
form{margin:0}
label{display:block;margin:14px 0 6px;font-size:14px;letter-spacing:.04em}
input[type=text],input[type=email],input[type=number],select,textarea{
  width:100%;background:#0a0b0d;border:1px solid var(--line);color:var(--ink);
  padding:10px 12px;border-radius:8px;font:15px/1.4 inherit
}
input:focus,select:focus,textarea:focus{outline:1px solid var(--gold);border-color:var(--gold)}
.chk{display:flex;gap:8px;align-items:flex-start;margin:12px 0;font-size:14px}
.chk input{width:auto;margin-top:3px}
.roles,.ais{display:flex;flex-wrap:wrap;gap:12px 18px;margin:8px 0 4px}
.hp{position:absolute;left:-9999px;height:0;overflow:hidden}
pre{
  background:#0a0a0c;border:1px solid var(--line);padding:16px;border-radius:12px;
  white-space:pre-wrap;font-size:13px;line-height:1.5;overflow:auto;color:var(--ink)
}
.faq details{border-bottom:1px solid var(--line);padding:12px 0}
.faq summary{cursor:pointer;color:var(--gold);font-weight:650;font-size:16px}
.faq details p{color:var(--muted);margin:8px 0 4px}
ol.plain,ul.plain{padding-left:22px}
ol.plain li,ul.plain li{margin:0 0 8px}
.stars{display:flex;gap:6px;margin:8px 0 16px}
.stars button{
  background:transparent;border:1px solid var(--line);color:var(--gold);width:44px;height:44px;
  border-radius:8px;cursor:pointer;font-size:20px
}
.stars button.on{background:var(--gold);color:#07080a;border-color:var(--gold)}
.seller-card .stars-read{color:var(--gold);letter-spacing:.12em;margin:0 0 8px}
.empty{color:var(--muted);font-style:italic}
footer{border-top:1px solid var(--line);padding:24px;color:var(--muted);font-size:13px;text-align:center}
footer p{max-width:760px;margin:0 auto 8px}
footer nav{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin:0 0 14px}
footer nav a{color:var(--muted);font-size:12px;letter-spacing:.08em;text-transform:uppercase}
.pack-page .how-box{margin-top:8px}
.hidden{display:none !important}
.muted{color:var(--muted)}
.ja-sub{color:var(--muted);font-size:14px;margin:-4px 0 16px}
html:not([lang="ja"]) .ja-sub{display:none !important}

/* Flow steppers — HTML/CSS only, no mermaid, no CDN */
.flow-layer{margin:0 0 36px;border:1px solid var(--line);border-radius:16px;padding:22px 20px;background:#0c0d10}
.flow-layer.later{border-style:dashed;opacity:.95}
.flow-kicker{display:inline-block;border:1px solid var(--gold);color:var(--gold);padding:4px 10px;border-radius:999px;font-size:11px;letter-spacing:.16em;text-transform:uppercase;font-weight:700;margin:0 0 12px}
.flow-layer.later .flow-kicker{border-color:var(--muted);color:var(--muted)}
.stepper{display:flex;flex-direction:column;gap:0}
.step-node{display:flex;gap:14px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px}
.step-num{flex:0 0 36px;height:36px;border-radius:50%;border:1px solid var(--gold);color:var(--gold);display:flex;align-items:center;justify-content:center;font-weight:700}
.step-body{flex:1;min-width:0}
.step-body h3{margin:0 0 6px;font-size:17px}
.step-body p{margin:0;color:var(--muted);font-size:14px}
.step-arrow{display:flex;justify-content:center;color:var(--gold);font-size:22px;line-height:1;padding:6px 0;letter-spacing:0}
.branches{display:grid;gap:12px;grid-template-columns:1fr;margin:12px 0 0}
@media(min-width:800px){
  .stepper-h{display:flex;flex-wrap:wrap;align-items:stretch;gap:0}
  .stepper-h .step-node{flex:1 1 180px;min-width:160px}
  .stepper-h .step-arrow{flex:0 0 28px;align-items:center;padding:0 4px;writing-mode:horizontal-tb}
  .branches{grid-template-columns:1fr 1fr 1fr}
}
.branch{border:1px solid var(--gold);background:#0a0b0d;border-radius:12px;padding:14px}
.branch h3{color:var(--gold);font-size:15px;margin:0 0 8px}
.branch p{color:var(--muted);font-size:13px;margin:0}
.callout{border:1px solid var(--gold);background:var(--warn-bg);border-radius:12px;padding:14px 16px;margin:18px 0 0;font-size:15px}
.flow-cards{display:grid;gap:16px;grid-template-columns:1fr;margin:0 0 32px}
@media(min-width:720px){.flow-cards{grid-template-columns:1fr 1fr}}

.pay-network{
  font-size:clamp(42px,10vw,96px);
  font-weight:750;
  letter-spacing:-.04em;
  line-height:.95;
  color:var(--gold);
  margin:8px 0 20px
}
.pay-copy-row{
  display:flex;flex-wrap:wrap;gap:10px;align-items:stretch;margin:0 0 10px
}
.pay-copy-row input[type=text]{
  flex:1 1 280px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:15px;
  letter-spacing:.02em
}
.pay-split{
  border:1px solid var(--gold);
  background:var(--ok-bg);
  color:var(--ink);
  padding:16px 18px;
  border-radius:12px;
  font-size:clamp(18px,2.4vw,28px);
  font-weight:700;
  margin:0 0 16px
}
.pay-warn-net{
  border:2px solid var(--bad);
  background:var(--bad-bg);
  color:#f0c8c8;
  padding:16px 18px;
  border-radius:12px;
  font-size:17px;
  font-weight:700;
  margin:0 0 20px;
  line-height:1.45
}

.seo-links{font-size:13px;color:var(--muted);line-height:1.7;margin:0 0 14px;max-width:52em}
.seo-links a{color:var(--gold)}
.faq details{border:1px solid var(--line);border-radius:12px;padding:10px 14px;margin:0 0 8px;background:var(--card)}
.faq summary{cursor:pointer;font-weight:650}