:root{
  --gold:#A59364;
  --gold-lt:#C9B489;
  --ink:#141010;
  --ink-2:#1E1815;
  --ink-3:#2A2220;
  --text:#EFEAE3;
  --muted:#9B938B;
  --serif:"Shippori Mincho",serif;
  --display:"Cormorant Garamond","Shippori Mincho",serif;
  --sans:"Noto Sans JP",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--ink);color:var(--text);
  font-family:var(--serif);line-height:2.05;letter-spacing:.05em;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}

/* =========================================================
   3-column frame: fixed brand panel / scrolling stream / fixed index
   ========================================================= */
.layout{display:grid;grid-template-columns:minmax(0,38%) minmax(0,1fr) 210px}

/* ---------- left: brand panel ---------- */
.panel{
  position:sticky;top:0;height:100svh;overflow:hidden;
  display:flex;flex-direction:column;justify-content:space-between;
  padding:clamp(28px,3vw,46px);
  border-right:1px solid rgba(165,147,100,.22);
}
.panel__bg{position:absolute;inset:0;z-index:0}
.panel__bg img,.panel__bg video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.panel__bg img{display:none}
.panel__bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,16,16,.72),rgba(20,16,16,.90))}
.panel > *:not(.panel__bg){position:relative;z-index:1}
.panel__logo{width:clamp(150px,15vw,230px)}
.panel__copy{font-family:var(--display);font-weight:300;font-size:clamp(34px,4.4vw,62px);line-height:1.12;letter-spacing:.03em}
.panel__copy em{display:block;font-style:normal;color:var(--gold-lt)}
.panel__jp{margin-top:20px;font-size:clamp(12.5px,1.1vw,15px);letter-spacing:.3em;color:rgba(239,234,227,.82)}
.panel__cta{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px}
.panel__meta{font-family:var(--sans);font-size:11px;letter-spacing:.16em;color:var(--muted);line-height:2.1}

/* ---------- center: scrolling stream ---------- */
.stream{padding:clamp(70px,9vw,130px) clamp(24px,4vw,68px) 0;min-width:0}
.block{margin-bottom:clamp(80px,10vw,150px)}
.eyebrow{font-family:var(--display);font-size:11px;letter-spacing:.34em;text-transform:uppercase;color:var(--gold);margin-bottom:16px}
.h2{font-family:var(--display);font-weight:300;font-size:clamp(32px,4.6vw,56px);line-height:1.18;letter-spacing:.03em}
.h2 small{display:block;font-family:var(--serif);font-size:12.5px;letter-spacing:.28em;color:var(--muted);margin-top:14px}
.lead{font-size:15px;line-height:2.45;color:rgba(239,234,227,.8);margin-top:26px}
.reveal{opacity:0;transform:translateY(30px);transition:opacity 1.05s ease,transform 1.05s ease}
.reveal.in{opacity:1;transform:none}

.btn{
  display:inline-block;font-family:var(--display);font-size:12px;letter-spacing:.26em;text-transform:uppercase;
  border:1px solid var(--gold);color:var(--gold-lt);padding:14px 34px;border-radius:2px;
  transition:background .4s ease,color .4s ease;
}
.btn:hover{background:var(--gold);color:var(--ink)}
.btn--fill{background:var(--gold);color:var(--ink)}
.btn--fill:hover{background:transparent;color:var(--gold-lt)}

/* cards in the stream */
.card{background:var(--ink-2);border:1px solid rgba(165,147,100,.2);margin-top:26px;overflow:hidden}
.card figure{aspect-ratio:16/10;overflow:hidden}
.card figure img,.card figure video{width:100%;height:100%;object-fit:cover;transition:transform 1.3s ease}
.card:hover figure img,.card:hover figure video{transform:scale(1.06)}
.card__b{padding:26px clamp(20px,2.4vw,32px) 32px}
.card__c{font-family:var(--display);font-size:11px;letter-spacing:.3em;text-transform:uppercase;color:var(--gold)}
.card__n{font-size:21px;margin:9px 0 15px;letter-spacing:.07em;line-height:1.6}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.tags span{font-family:var(--sans);font-size:11px;letter-spacing:.1em;border:1px solid rgba(165,147,100,.3);color:var(--muted);padding:5px 12px}
.card__d{font-size:13.5px;line-height:2.2;color:var(--muted)}

/* numbered promises */
.pro{margin-top:34px;display:grid;gap:2px}
.pro__i{background:var(--ink-2);border-left:2px solid var(--gold);padding:26px clamp(20px,2.4vw,30px)}
.pro__n{font-family:var(--display);font-size:13px;letter-spacing:.3em;color:var(--gold)}
.pro__t{font-size:18px;font-weight:500;letter-spacing:.07em;margin:8px 0 12px}
.pro__d{font-size:13.5px;line-height:2.2;color:var(--muted)}

/* flow */
.flow{counter-reset:s;margin-top:34px;border-top:1px solid rgba(165,147,100,.2)}
.flow li{counter-increment:s;list-style:none;border-bottom:1px solid rgba(165,147,100,.2);display:grid;grid-template-columns:70px 1fr;gap:16px;padding:24px 2px;align-items:baseline}
.flow li::before{content:"0" counter(s);font-family:var(--display);font-size:24px;color:var(--gold)}
.flow h3{font-size:17px;font-weight:500;letter-spacing:.07em;margin-bottom:7px}
.flow p{font-size:13px;line-height:2.15;color:var(--muted)}

/* definition list */
.dl{border-top:1px solid rgba(165,147,100,.2);margin-top:30px}
.dl div{display:grid;grid-template-columns:150px 1fr;gap:16px;border-bottom:1px solid rgba(165,147,100,.2);padding:20px 2px}
.dl dt{font-family:var(--sans);font-size:11.5px;letter-spacing:.14em;color:var(--gold)}
.dl dd{font-size:14.5px;line-height:2.1}

/* form */
.form{margin-top:32px}
.field{margin-bottom:22px}
.field label{display:block;font-family:var(--sans);font-size:12px;letter-spacing:.14em;margin-bottom:8px;color:var(--muted)}
.field label .req{color:var(--gold);margin-left:6px}
.field input,.field select,.field textarea{
  width:100%;font-family:var(--sans);font-size:15px;color:var(--text);
  background:rgba(255,255,255,.04);border:1px solid rgba(165,147,100,.28);border-radius:2px;padding:13px 15px;line-height:1.7;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--gold);background:rgba(255,255,255,.07)}
.field select option{background:var(--ink-2);color:var(--text)}
.field textarea{min-height:140px;resize:vertical}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.note{font-family:var(--sans);font-size:12px;line-height:2;color:var(--muted)}
.form button{
  font-family:var(--display);font-size:13px;letter-spacing:.3em;text-transform:uppercase;
  background:var(--gold);color:var(--ink);border:1px solid var(--gold);border-radius:2px;
  padding:16px 52px;cursor:pointer;transition:background .4s,color .4s;
}
.form button:hover{background:transparent;color:var(--gold-lt)}

/* ---------- right: section index ---------- */
.idx{
  position:sticky;top:0;height:100svh;
  display:flex;flex-direction:column;justify-content:center;gap:4px;
  padding:24px 20px;border-left:1px solid rgba(165,147,100,.22);background:var(--ink-2);
}
.idx__ttl{font-family:var(--display);font-size:10px;letter-spacing:.3em;text-transform:uppercase;color:var(--muted);margin-bottom:16px}
.idx a{
  display:block;font-family:var(--sans);font-size:12px;letter-spacing:.1em;color:var(--muted);
  padding:9px 0 9px 14px;border-left:1px solid transparent;transition:color .3s,border-color .3s;
}
.idx a:hover,.idx a.on{color:var(--gold-lt);border-left-color:var(--gold)}
.idx__switch{margin-top:26px;padding-top:20px;border-top:1px solid rgba(165,147,100,.22)}
.idx__switch a{color:var(--gold-lt);padding-left:0}

/* footer inside the stream */
.ftr{padding:56px 0 40px;border-top:1px solid rgba(165,147,100,.2);text-align:center}
.ftr img{width:180px;margin:0 auto 20px}
.ftr small{font-family:var(--sans);font-size:11px;letter-spacing:.1em;color:var(--muted)}
.draft{background:var(--gold);color:var(--ink);text-align:center;font-family:var(--sans);font-size:11.5px;letter-spacing:.1em;padding:9px 16px;line-height:1.7}

.badge-b2b{display:inline-block;font-family:var(--sans);font-size:11px;letter-spacing:.24em;border:1px solid var(--gold);color:var(--gold-lt);padding:6px 16px;margin-bottom:22px}

@media (max-width:1100px){
  .layout{grid-template-columns:minmax(0,42%) minmax(0,1fr)}
  .idx{display:none}
}
@media (max-width:820px){
  .panel__bg video{display:none}
  .panel__bg img{display:block}
  .layout{display:block}
  .panel{position:relative;height:auto;min-height:88svh;border-right:0;border-bottom:1px solid rgba(165,147,100,.22);gap:40px}
  .stream{padding:64px 24px 0}
  .grid2{grid-template-columns:1fr}
  .dl div{grid-template-columns:1fr;gap:5px}
  .flow li{grid-template-columns:54px 1fr;gap:12px}
}