:root{--bg:#fff;--ink:#0f0f10;--muted:rgba(15,15,16,.66);--soft:#f5f5f7;--line:rgba(15,15,16,.10);--shadow:0 18px 60px rgba(0,0,0,.08);--r:18px}
*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,Arial,sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.section{padding:84px 0}.section--alt{background:linear-gradient(180deg,#fbfbfc 0%,#f5f5f7 100%)}.section__lead{max-width:720px;color:var(--muted);font-size:16px;line-height:1.7}
.topbar{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.86);backdrop-filter:saturate(1.8) blur(18px);border-bottom:1px solid var(--line)}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0;gap:16px}
.brand{display:flex;align-items:center;gap:12px;min-width:220px}
.brand__mark{width:36px;height:36px;border-radius:12px;display:grid;place-items:center;border:1px solid var(--line);font-weight:700;letter-spacing:.08em}
.brand__name{font-weight:700;letter-spacing:.08em}.brand__sub{font-size:12px;color:var(--muted);margin-top:2px}
.nav{display:flex;gap:18px;flex-wrap:wrap;justify-content:center}.nav a{font-size:13px;color:rgba(15,15,16,.72);padding:10px 10px;border-radius:12px}.nav a:hover{background:rgba(15,15,16,.04)}
.lang{display:flex;gap:8px}.lang__btn{border:1px solid var(--line);background:transparent;padding:8px 10px;border-radius:999px;font-size:12px;color:rgba(15,15,16,.72)}
.lang__btn[aria-pressed="true"]{background:rgba(15,15,16,.06);color:var(--ink)}
.hero{padding:86px 0 40px;background:radial-gradient(1200px 560px at 80% 10%, rgba(0,0,0,.06), rgba(255,255,255,0))}
.hero__grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.kicker{font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:rgba(15,15,16,.72)}
.hero h1{margin:14px 0 10px;font-size:44px;line-height:1.08;letter-spacing:-.02em}
.lead{color:var(--muted);font-size:17px;line-height:1.7;max-width:640px}
.hero__meta{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 18px}
.meta__pill{border:1px solid var(--line);padding:8px 10px;border-radius:999px;font-size:12px;color:rgba(15,15,16,.72);background:rgba(255,255,255,.6)}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 16px;border-radius:14px;border:1px solid rgba(15,15,16,.14);background:var(--ink);color:#fff;font-size:13px;font-weight:600}
.btn--ghost{background:transparent;color:var(--ink)}.btn--ghost:hover{background:rgba(15,15,16,.04)}.btn:hover{filter:brightness(.98)}.btn--small{padding:10px 12px;border-radius:12px}
.micro{color:rgba(15,15,16,.60);font-size:12.5px;line-height:1.6}
.hero__media img{width:100%;border-radius:24px;box-shadow:var(--shadow);border:1px solid rgba(15,15,16,.08);background:#fff}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:28px}
.card{background:#fff;border:1px solid rgba(15,15,16,.10);border-radius:var(--r);padding:18px;box-shadow:0 10px 30px rgba(0,0,0,.05)}
.card__k{font-weight:650}.card__p{color:var(--muted);font-size:13px;margin-top:8px;line-height:1.6}
.store__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:26px;align-items:start}
.toggle{display:flex;gap:8px;margin:18px 0 12px}.toggle__btn{border:1px solid var(--line);background:rgba(255,255,255,.6);padding:10px 12px;border-radius:999px;font-size:12px;color:rgba(15,15,16,.72)}
.toggle__btn.is-active{background:rgba(15,15,16,.06);color:var(--ink)}
.card--big{padding:22px}.card__title{font-weight:750;letter-spacing:.02em}
.list{margin:12px 0 14px;padding-left:18px;color:rgba(15,15,16,.80);font-size:13px;line-height:1.6}
.price{display:flex;align-items:baseline;justify-content:space-between;padding:12px 0 4px;border-top:1px solid var(--line);margin-top:6px}
.price__label{color:rgba(15,15,16,.62);font-size:12px}.price__value{font-size:20px;font-weight:800;letter-spacing:-.02em}
.stockline{color:rgba(15,15,16,.62);font-size:12px;margin-top:6px}
.preorder{margin:12px 0 10px;padding:12px 12px;border:1px solid rgba(15,15,16,.10);border-radius:16px;background:rgba(255,255,255,.65)}
.preorder__row{color:rgba(15,15,16,.66);font-size:12.5px;padding:3px 2px}
.mediaCard{border-radius:24px;border:1px solid rgba(15,15,16,.08);background:#fff;box-shadow:var(--shadow);overflow:hidden}
.thumbs{display:flex;gap:10px;margin-top:12px}.thumb{border:1px solid rgba(15,15,16,.10);background:#fff;border-radius:16px;padding:6px;width:92px;cursor:pointer;opacity:.8}
.thumb.is-active{opacity:1;box-shadow:0 10px 24px rgba(0,0,0,.08)}.thumb img{border-radius:12px}
.specgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:18px}
.spec{border:1px solid var(--line);border-radius:16px;padding:14px;background:rgba(255,255,255,.8)}.spec__k{font-size:12px;color:rgba(15,15,16,.62)}.spec__v{margin-top:6px;font-weight:650}
.slots{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:22px}
.slot{padding:14px 14px;border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,.75);font-weight:650}
.slot.filled{background:var(--ink);color:#fff;border-color:rgba(15,15,16,.24)}
.slotmeta{display:flex;gap:10px;margin-top:14px}.slotmeta__pill{border:1px solid var(--line);border-radius:999px;padding:8px 10px;font-size:12px;color:rgba(15,15,16,.72);background:rgba(255,255,255,.6)}
.apply__grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.form{display:grid;gap:12px}
input,textarea{width:100%;padding:12px 12px;border:1px solid var(--line);border-radius:14px;font-size:13px;background:rgba(255,255,255,.8)}
textarea{resize:vertical;min-height:140px}
.legalbox{margin-top:18px;border:1px solid var(--line);border-radius:18px;padding:16px;background:rgba(245,245,247,.7)}
.legalbox__title{font-weight:750}.legalbox p{color:rgba(15,15,16,.66);font-size:13px;line-height:1.7;margin:10px 0 8px}
.legalbox__links{display:flex;gap:12px}.legalbox__links a{font-size:12px;color:rgba(15,15,16,.72);text-decoration:underline}
.footer{border-top:1px solid var(--line);padding:22px 0;background:#fff}
.footer__inner{display:flex;justify-content:space-between;align-items:center;gap:16px}
.footer__brand{font-weight:800;letter-spacing:.08em}.footer__small{color:rgba(15,15,16,.60);font-size:12px;margin-top:6px}
.footer__right{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end}
.footer__right a{font-size:12px;color:rgba(15,15,16,.72);padding:8px 8px;border-radius:12px}.footer__right a:hover{background:rgba(15,15,16,.04)}
.buybar{position:fixed;left:0;right:0;bottom:0;z-index:30;border-top:1px solid rgba(15,15,16,.10);background:rgba(255,255,255,.9);backdrop-filter:saturate(1.8) blur(18px)}
.buybar__inner{max-width:1120px;margin:0 auto;padding:10px 16px;display:flex;align-items:center;justify-content:space-between;gap:14px}
.buybar__title{font-size:12px;color:rgba(15,15,16,.72)}.buybar__price{font-weight:850;font-size:14px}
@media (max-width:980px){.hero__grid,.store__grid,.apply__grid{grid-template-columns:1fr}.grid{grid-template-columns:1fr 1fr}.slots{grid-template-columns:1fr}.hero h1{font-size:36px}.section{padding:64px 0}}
@media (max-width:520px){.nav{display:none}.grid{grid-template-columns:1fr}}


/* v5 Sponsor Institutional Upgrade */
.progress-wrap { margin: 28px 0; }
.progress-label { font-weight:600; font-size:13px; margin-bottom:8px; }
.progress-bar { height:10px; background:#eee; border-radius:999px; overflow:hidden; }
.progress-fill { height:100%; background:#000; border-radius:999px; }

.slot { position:relative; padding:18px; border-radius:18px; border:1px solid rgba(0,0,0,.08); background:#fff; }
.slot-title { font-weight:700; }
.slot-desc { font-size:13px; color:rgba(0,0,0,.6); margin-top:6px; }

.slot.filled { background:#000; color:#fff; }
.slot.verified .badge {
  position:absolute;
  top:14px;
  right:14px;
  background:#fff;
  color:#000;
  padding:4px 10px;
  border-radius:999px;
  font-size:11px;
  font-weight:600;
}


/* v6 Hybrid Tier Styling */
.tier-title {
  margin-top:40px;
  margin-bottom:16px;
  font-weight:800;
  font-size:16px;
  letter-spacing:.04em;
}

.nda-box {
  margin-top:40px;
  padding:24px;
  border:1px solid rgba(0,0,0,.12);
  border-radius:20px;
  background:#fff;
  box-shadow:0 20px 60px rgba(0,0,0,.06);
}

.nda-box h4 {
  margin:0 0 10px 0;
  font-weight:800;
}

.nda-box p {
  font-size:13px;
  color:rgba(0,0,0,.6);
  margin-bottom:16px;
}