:root{
  --bg:#080c12; --panel:#0f1620; --panel2:#0b1017; --line:rgba(150,175,200,.16);
  --ink:#e8eff6; --mut:#8ba0b5; --mint:#3fd9a0; --violet:#a78bfa; --amber:#f2b45c;
  --mono:"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
  --sans:Inter,system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans KR",sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.6}
a{color:var(--mint);text-decoration:none}
button,input,select{font:inherit}

/* ---------- chrome ---------- */
.topbar{position:sticky;top:0;z-index:50;display:flex;gap:16px;align-items:center;
  padding:12px 20px;background:rgba(8,12,18,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.brand{font-family:var(--mono);font-weight:800;font-size:17px;letter-spacing:-.03em;white-space:nowrap}
.brand b{color:var(--mint)}
.search{flex:1;max-width:640px}
.search input{width:100%;background:var(--panel2);border:1px solid var(--line);color:var(--ink);
  border-radius:999px;padding:9px 16px;outline:none}
.search input:focus{border-color:rgba(63,217,160,.5)}
.topbar-right{margin-left:auto;display:flex;gap:10px;align-items:center}
.ghost{border:1px solid var(--line);border-radius:999px;padding:7px 13px;color:var(--mut);font-size:13px;
  background:transparent;cursor:pointer;white-space:nowrap}
.ghost:hover{color:var(--ink);background:var(--panel)}
.quota{font-family:var(--mono);font-size:12px;color:var(--amber);border:1px solid rgba(242,180,92,.3);
  border-radius:999px;padding:5px 11px;background:rgba(242,180,92,.08);white-space:nowrap}

.view{max-width:1180px;margin:0 auto;padding:34px 20px 80px;min-height:60vh}
.loading{color:var(--mut);padding:60px 0;text-align:center}
.crumb{display:flex;gap:8px;flex-wrap:wrap;color:var(--mut);font-size:13px;margin-bottom:14px}
.crumb a{color:var(--mut)} .crumb a:hover{color:var(--mint)}
.eyebrow{color:var(--mint);font-family:var(--mono);text-transform:uppercase;letter-spacing:.14em;
  font-size:11px;font-weight:800}
h1{font-size:clamp(30px,4.4vw,50px);line-height:1.05;letter-spacing:-.04em;margin:10px 0 12px}
h2{font-size:21px;letter-spacing:-.02em;margin:0 0 8px}
.lead{color:var(--mut);max-width:720px;font-size:17px}

/* ---------- grids / cards ---------- */
.grid{display:grid;gap:13px;margin-top:24px}
.g3{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}
.g4{grid-template-columns:repeat(auto-fill,minmax(210px,1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:15px;padding:17px;
  display:block;color:inherit;transition:border-color .15s,transform .15s}
.card:hover{border-color:rgba(63,217,160,.45);transform:translateY(-1px)}
.card h3{margin:6px 0 5px;font-size:16px;letter-spacing:-.01em}
.card p{margin:0;color:var(--mut);font-size:13.5px}
.tag{display:inline-block;font-family:var(--mono);font-size:10.5px;font-weight:800;letter-spacing:.06em;
  color:var(--mint);background:rgba(63,217,160,.1);border:1px solid rgba(63,217,160,.26);
  border-radius:999px;padding:2px 8px}
.tag.grey{color:var(--mut);background:rgba(150,175,200,.08);border-color:var(--line)}
.tag.violet{color:var(--violet);background:rgba(167,139,250,.1);border-color:rgba(167,139,250,.28)}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.spacer{flex:1}
.muted{color:var(--mut);font-size:13px}

/* ---------- topic list ---------- */
.tlist{margin-top:22px;border:1px solid var(--line);border-radius:15px;overflow:hidden;background:var(--panel)}
.titem{display:flex;gap:14px;align-items:center;padding:13px 17px;border-bottom:1px solid var(--line);color:inherit}
.titem:last-child{border-bottom:0}
.titem:hover{background:rgba(63,217,160,.05)}
.tnum{font-family:var(--mono);font-size:12px;color:var(--mut);min-width:28px}
.tmain{flex:1;min-width:0}
.tmain b{display:block;font-weight:600;font-size:15px}
.tmain span{color:var(--mut);font-size:12.5px}
.dot{width:8px;height:8px;border-radius:50%;background:#334155;flex:none}
.dot.ready{background:var(--mint);box-shadow:0 0 9px rgba(63,217,160,.6)}

/* ---------- reader ---------- */
.reader{display:grid;grid-template-columns:250px 1fr;gap:34px;align-items:start}
.toc{position:sticky;top:74px;border:1px solid var(--line);border-radius:14px;background:var(--panel);
  padding:13px;max-height:calc(100vh - 110px);overflow:auto}
.toc h4{margin:0 0 9px;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--mut);
  font-family:var(--mono)}
.toc a{display:block;padding:6px 9px;border-radius:8px;font-size:13.5px;color:var(--mut);line-height:1.4}
.toc a:hover{background:rgba(255,255,255,.04);color:var(--ink)}
.toc a.on{background:rgba(63,217,160,.13);color:var(--mint);font-weight:600}
.article{min-width:0;max-width:74ch}
.meta-strip{display:flex;gap:9px;flex-wrap:wrap;align-items:center;margin:12px 0 22px;
  padding:11px 14px;border:1px solid var(--line);border-radius:12px;background:var(--panel2)}
.gen{border:1px dashed rgba(63,217,160,.4);border-radius:15px;padding:34px 24px;text-align:center;
  background:rgba(63,217,160,.04)}
.gen h3{margin:14px 0 7px;font-size:19px}
.gen p{color:var(--mut);margin:0 auto 18px;max-width:430px;font-size:14.5px}
.primary{border:0;border-radius:999px;background:var(--mint);color:#04120c;padding:11px 22px;
  font-weight:800;cursor:pointer}
.primary:hover{filter:brightness(1.08)}
.primary:disabled{opacity:.5;cursor:default}
.pulse{width:52px;height:52px;margin:0 auto;border-radius:50%;display:grid;place-items:center;font-size:24px;
  background:radial-gradient(circle at 32% 30%,rgba(63,217,160,.35),rgba(167,139,250,.16));
  border:1px solid rgba(63,217,160,.45);animation:glow 2.2s ease-in-out infinite}
@keyframes glow{0%,100%{box-shadow:0 0 16px rgba(63,217,160,.2)}50%{box-shadow:0 0 40px rgba(63,217,160,.42)}}
.streaming{font-size:12px;color:var(--mint);font-family:var(--mono);display:flex;gap:8px;align-items:center;
  margin-bottom:14px}
.blink{display:inline-block;width:8px;height:15px;background:var(--mint);animation:blink 1s steps(2) infinite;
  vertical-align:text-bottom}
@keyframes blink{0%,50%{opacity:1}51%,100%{opacity:0}}
.prose{font-size:16.5px;line-height:1.78}
.prose h2{font-size:22px;margin:32px 0 12px;letter-spacing:-.02em;padding-bottom:7px;border-bottom:1px solid var(--line)}
.prose h3{font-size:17px;margin:22px 0 8px}
.prose p{margin:0 0 15px}
.prose ul,.prose ol{margin:0 0 15px;padding-left:22px}
.prose li{margin:5px 0}
.prose code{font-family:var(--mono);font-size:.9em;background:rgba(150,175,200,.12);padding:1px 5px;border-radius:5px}
.prose strong{color:#fff}
.prose hr{border:0;border-top:1px solid var(--line);margin:26px 0}
.err{border:1px solid rgba(242,120,120,.4);background:rgba(242,120,120,.07);color:#f2a0a0;
  border-radius:12px;padding:15px}
.callout{border:1px solid rgba(242,180,92,.32);background:rgba(242,180,92,.07);border-radius:12px;
  padding:13px 15px;margin:18px 0;font-size:14px;color:var(--amber)}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--line);background:#06090e;padding:26px 20px;display:flex;gap:24px;
  flex-wrap:wrap;justify-content:space-between}
.foot p{color:var(--mut);margin:5px 0 0;font-size:13px;max-width:460px}
.foot-note{color:var(--mut);font-family:var(--mono);font-size:11.5px;align-self:flex-end}

@media(max-width:860px){
  .reader{grid-template-columns:1fr}
  .toc{position:static;max-height:none;order:2}
  .search{max-width:none}
  .topbar{flex-wrap:wrap}
  .topbar-right{width:100%;margin-left:0}
}