:root{
  --bg:#060805;
  --panel:#0d120a;
  --panel2:#11190d;
  --green:#94ff39;
  --lime:#caff52;
  --gold:#ffd75a;
  --text:#f4ffe8;
  --muted:#abc49a;
  --line:rgba(148,255,57,.18);
  --shadow:0 20px 80px rgba(0,0,0,.48);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:radial-gradient(circle at 12% 5%, rgba(148,255,57,.18), transparent 28%), radial-gradient(circle at 88% 0%, rgba(255,215,90,.12), transparent 26%), var(--bg);
  color:var(--text);
  font-family:'Inter','Noto Sans KR',system-ui,-apple-system,Segoe UI,sans-serif;
  line-height:1.75;
  overflow-x:hidden;
}
.jungle-bg{position:fixed; inset:0; pointer-events:none; opacity:.42; z-index:-1; background-image:linear-gradient(115deg, rgba(148,255,57,.07) 0 1px, transparent 1px 110px), linear-gradient(245deg, rgba(255,215,90,.05) 0 1px, transparent 1px 130px); mask-image:linear-gradient(to bottom,#000 0%,transparent 92%)}
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px clamp(18px,4vw,54px);border-bottom:1px solid var(--line);background:rgba(6,8,5,.78);backdrop-filter:blur(16px)}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--text);min-width:0}.brand-mark{display:grid;place-items:center;width:46px;height:46px;border:1px solid rgba(148,255,57,.4);border-radius:14px;background:linear-gradient(145deg, rgba(148,255,57,.22), rgba(255,215,90,.08));font-family:'Anton',sans-serif;font-size:22px;color:var(--green);box-shadow:0 0 26px rgba(148,255,57,.18)}.brand-text{font-weight:900;letter-spacing:.08em;font-size:14px;white-space:nowrap}.top-actions{display:flex;align-items:center;gap:10px}.home-btn,.lang-btn{height:42px;border-radius:999px;padding:0 16px;border:1px solid rgba(148,255,57,.32);background:rgba(13,18,10,.8);color:var(--text);font-weight:800;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.home-btn:hover,.lang-btn:hover{background:rgba(148,255,57,.15);border-color:rgba(148,255,57,.65)}.lang-btn{min-width:58px;color:var(--green)}
main{width:min(1180px, calc(100% - 32px));margin:0 auto}.hero{padding:88px 0 48px;text-align:center}.hero-kicker{display:inline-flex;padding:8px 14px;border:1px solid var(--line);border-radius:999px;color:var(--green);font-size:12px;font-weight:900;letter-spacing:.12em;background:rgba(13,18,10,.72)}h1{font-family:'Anton',sans-serif;font-size:clamp(58px,11vw,132px);line-height:.88;margin:28px 0 8px;letter-spacing:.02em;text-shadow:0 0 40px rgba(148,255,57,.22)}.tagline{margin:0;font-size:clamp(24px,4vw,46px);font-weight:900;color:var(--gold)}.hero-desc{max-width:780px;margin:22px auto 0;color:var(--muted);font-size:18px}.hero-buttons{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:30px}.primary-btn,.secondary-btn{border-radius:18px;padding:14px 22px;text-decoration:none;font-weight:900;letter-spacing:-.01em}.primary-btn{color:#081005;background:linear-gradient(135deg,var(--green),var(--gold));box-shadow:0 18px 50px rgba(148,255,57,.2)}.secondary-btn{color:var(--text);border:1px solid var(--line);background:rgba(13,18,10,.76)}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:42px auto 0;max-width:820px}.stats div{border:1px solid var(--line);border-radius:22px;padding:18px;background:linear-gradient(180deg,rgba(17,25,13,.78),rgba(8,12,6,.86));box-shadow:var(--shadow)}.stats span{display:block;font-family:'Anton',sans-serif;font-size:30px;color:var(--green);line-height:1}.stats small{display:block;margin-top:8px;color:var(--muted);font-weight:700}.layout{display:grid;grid-template-columns:270px 1fr;gap:22px;align-items:start;padding:30px 0 80px}.toc-card{position:sticky;top:92px;border:1px solid var(--line);border-radius:26px;background:rgba(13,18,10,.74);box-shadow:var(--shadow);padding:18px}.toc-title{font-family:'Anton',sans-serif;color:var(--gold);font-size:22px;letter-spacing:.04em;margin-bottom:10px}.toc-list{display:flex;flex-direction:column;gap:5px}.toc-list a{color:var(--muted);text-decoration:none;border-radius:12px;padding:8px 10px;font-size:14px;font-weight:700}.toc-list a:hover{background:rgba(148,255,57,.12);color:var(--text)}.paper-card{border:1px solid var(--line);border-radius:32px;background:linear-gradient(180deg,rgba(17,25,13,.86),rgba(7,10,5,.92));box-shadow:var(--shadow);overflow:hidden}.paper-content{padding:clamp(22px,4vw,54px);display:none}.paper-content.active{display:block}.paper-content h1{font-family:'Anton',sans-serif;font-size:clamp(42px,7vw,76px);margin:0 0 8px}.paper-content h2{font-size:clamp(28px,4vw,42px);line-height:1.2;margin:58px 0 18px;color:var(--gold);letter-spacing:-.04em}.paper-content h3{font-size:22px;margin:36px 0 12px;color:var(--green)}.paper-content p{color:#e8f8dd;margin:14px 0}.paper-content strong{color:#fff}.paper-content em{color:var(--gold)}.paper-content hr{border:0;height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);margin:34px 0}.paper-content ul{padding-left:22px}.paper-content li{margin:7px 0}.paper-content table{width:100%;border-collapse:collapse;margin:22px 0;border:1px solid var(--line);border-radius:18px;overflow:hidden;display:block;overflow-x:auto}.paper-content th,.paper-content td{border-bottom:1px solid rgba(148,255,57,.14);padding:13px 15px;text-align:left;vertical-align:top;white-space:nowrap}.paper-content th{color:#081005;background:linear-gradient(135deg,var(--green),var(--gold));font-weight:900}.paper-content td{color:#efffe4;background:rgba(0,0,0,.18)}.paper-content blockquote{margin:24px 0;padding:18px 22px;border-left:4px solid var(--green);background:rgba(148,255,57,.08);border-radius:12px}.footer{border-top:1px solid var(--line);padding:28px clamp(18px,4vw,54px);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--muted);background:rgba(6,8,5,.78)}.footer a{color:var(--green);text-decoration:none;font-weight:900}.to-top{position:fixed;right:18px;bottom:18px;width:48px;height:48px;border-radius:50%;border:1px solid rgba(148,255,57,.4);background:rgba(13,18,10,.86);color:var(--green);font-size:22px;font-weight:900;cursor:pointer;display:none}.to-top.show{display:block}
@media (max-width:900px){.layout{grid-template-columns:1fr}.toc-card{position:relative;top:auto}.toc-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.stats{grid-template-columns:1fr}.topbar{align-items:flex-start}.brand-text{display:none}.home-btn{font-size:12px;padding:0 12px}.hero{padding-top:56px}.paper-content{padding:22px}.paper-content th,.paper-content td{font-size:13px}.toc-list a{font-size:13px}}
@media (max-width:520px){main{width:min(100% - 22px,1180px)}.topbar{padding:12px}.hero-buttons{flex-direction:column}.primary-btn,.secondary-btn{width:100%}.toc-list{grid-template-columns:1fr}.paper-card{border-radius:22px}.paper-content h2{margin-top:42px}}




/* ===== Simple whitepaper topbar: HOME + Language only ===== */
.simple-topbar{
  position:sticky;
  top:0;
  z-index:100;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:18px 48px;
  backdrop-filter:blur(14px);
  background:rgba(8,8,8,0.72);
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.simple-topbar .brand{
  font-family:'Anton', sans-serif;
  font-size:32px;
  letter-spacing:1px;
  color:var(--gold);
  text-decoration:none;
  display:block;
  min-width:auto;
}
.simple-topbar .top-actions{
  display:flex;
  align-items:center;
  gap:10px;
}
.simple-topbar .home-btn,
.simple-topbar .lang-btn{
  min-width:76px;
  height:42px;
  padding:0 18px;
  border-radius:999px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  text-decoration:none;
  font-size:14px;
  font-weight:900;
  letter-spacing:0.10em;
  cursor:pointer;
  border:1px solid rgba(255,215,90,.34);
  background:rgba(13,18,10,.76);
  color:var(--text);
}
.simple-topbar .lang-btn{
  background:linear-gradient(135deg,var(--gold),var(--lime));
  color:#0f0d09;
  border-color:transparent;
  box-shadow:0 10px 24px rgba(255,215,90,.18);
}
.simple-topbar .home-btn:hover{
  background:rgba(255,215,90,.12);
  border-color:rgba(255,215,90,.68);
}
.simple-topbar .lang-btn:hover{
  filter:brightness(1.08);
}
.hero-buttons{display:none !important;}
@media (max-width:520px){
  .simple-topbar{padding:12px;}
  .simple-topbar .brand{font-size:30px;}
  .simple-topbar .home-btn,
  .simple-topbar .lang-btn{min-width:64px;height:40px;padding:0 14px;font-size:12px;}
}