/* 자연선택 — 설계 없이 설계가 만들어지는 자리. 팔레트는 science.css 변수 위에서. */
*{box-sizing:border-box}
body.nspage{margin:0;min-height:100vh;background:var(--ink);-webkit-text-size-adjust:100%}
#wrap{max-width:900px;margin:0 auto;padding:0 18px 40px}

#head{display:flex;align-items:center;gap:12px;padding:14px 0 10px;flex-wrap:wrap}
#backbtn{width:34px;height:34px;flex:0 0 auto;font-size:17px;line-height:1;color:var(--chalk);
  background:var(--ink-2);border:1px solid var(--ink-3);border-radius:9px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;padding:0;transition:.16s}
#backbtn:hover{border-color:var(--brass);color:var(--brass)}
.brandline{font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--brass);text-decoration:none}
.brandline b{color:var(--chalk);font-weight:500}
.h-sp{flex:1}
.h-lib,.h-lang{font-size:12.5px;color:var(--chalk-dim);text-decoration:none;border:1px solid var(--ink-3);
  border-radius:7px;padding:6px 11px;transition:.16s}
.h-lib:hover,.h-lang:hover{border-color:var(--brass);color:var(--brass)}

.pg-h{font-family:var(--disp);font-weight:700;font-size:31px;color:var(--chalk);margin:8px 0 14px;line-height:1.32}
.pg-sub{font-size:14.5px;line-height:1.85;color:var(--chalk-dim);word-break:keep-all;margin:0 0 22px;max-width:70ch}
.pg-sub b,.after-note b,.sec-sub b{color:var(--chalk);font-weight:600}
.s-kicker{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;color:var(--brass);margin:18px 0 8px}
.sec-h{font-family:var(--disp);font-weight:700;font-size:21px;color:var(--chalk);margin:0 0 10px}
.sec-sub{font-size:13.5px;line-height:1.85;color:var(--chalk-dim);word-break:keep-all;margin:0 0 20px;max-width:70ch}
section{margin-bottom:36px;padding-bottom:30px;border-bottom:1px solid var(--ink-3)}
.after-note{font-size:13.5px;line-height:1.9;color:var(--chalk-dim);word-break:keep-all;margin:18px 0 0;max-width:70ch}

/* 무대 */
#ns-stage{background:var(--ink-2);border:1px solid var(--ink-3);border-radius:12px;padding:14px;
  margin-bottom:14px;overflow-x:auto}
#ns-svg{display:block;width:100%;min-width:520px}
#ns-meta{display:flex;gap:14px;flex-wrap:wrap;align-items:baseline;margin-top:8px}
#ns-gen,#ns-mean{font-family:var(--mono);font-size:13px;color:var(--brass-soft)}
#ns-say{font-size:13.5px;line-height:1.9;color:var(--chalk-dim);margin:10px 0 0;word-break:keep-all;
  min-height:3.8em}
#ns-say b{color:var(--brass-soft)}
.ns-stuck #ns-say{color:#E08A6B}

.ns-bar{fill:var(--cyan);opacity:.8}
.ns-bar.lam{fill:#E08A6B}
.ns-bar.dar{fill:#8FA96B}
.ns-mean{stroke:var(--brass);stroke-width:2}
.ns-start{stroke:var(--chalk-dim);stroke-width:1;stroke-dasharray:3 4;opacity:.6}
.ns-axis{stroke:var(--chalk-dim);stroke-width:1}

/* 손잡이 */
.ns-ctl{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:0 0 14px}
@media (max-width:560px){.ns-ctl{grid-template-columns:1fr}}
.ns-ctl label{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.14em;
  color:var(--chalk-dim);margin-bottom:8px}
.ns-ctl .row{display:flex;align-items:center;gap:12px}
.ns-ctl input[type=range]{flex:1;accent-color:var(--brass);min-width:0}
.ns-ctl .val{font-family:var(--mono);font-size:15px;color:var(--brass-soft);min-width:38px;text-align:right}
.ctl-line{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:0 0 4px}
.brassbtn{padding:11px 18px;font-size:14px;font-weight:700;color:var(--ink);background:var(--brass);
  border:none;border-radius:9px;cursor:pointer;font-family:inherit;transition:transform .14s}
.brassbtn:active{transform:scale(.985)}
.ghostbtn{padding:9px 15px;font-size:13px;color:var(--chalk);background:none;border:1px solid var(--ink-3);
  border-radius:8px;cursor:pointer;font-family:inherit;transition:.16s}
.ghostbtn:hover{border-color:var(--chalk-dim)}

/* 두 모형 나란히 */
#vs-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}
@media (max-width:560px){#vs-grid{grid-template-columns:1fr}}
.vs-box{background:var(--ink-2);border:1px solid var(--ink-3);border-radius:12px;padding:14px}
.vs-box.l{border-color:rgba(224,138,107,.36)}
.vs-box.d{border-color:rgba(143,169,107,.36)}
.vs-box h3{font-family:var(--disp);font-weight:700;font-size:16px;color:var(--chalk);margin:0 0 8px}
.vs-box svg{display:block;width:100%}
.vs-box p{font-size:12.5px;line-height:1.8;color:var(--chalk-dim);margin:8px 0 0;word-break:keep-all}
.vs-box p b{color:var(--chalk)}
#vs-meta{display:flex;gap:14px;flex-wrap:wrap;align-items:baseline;margin-bottom:12px}
#vs-gen,#vs-nums{font-family:var(--mono);font-size:12.5px;color:var(--brass-soft)}

/* 출처·마무리 */
#src h2{font-family:var(--disp);font-weight:700;font-size:19px;color:var(--chalk);margin:0 0 14px}
#src ul{margin:0;padding-left:18px}
#src li{font-size:13.5px;line-height:1.9;color:var(--chalk-dim);margin-bottom:10px;word-break:keep-all}
#src li b{color:var(--chalk);font-weight:600}
#src a{color:var(--cyan);text-decoration:none}
#src a:hover{text-decoration:underline}
.src-warn{font-size:13px;line-height:1.9;color:var(--chalk-dim);background:var(--ink-2);
  border-left:2px solid var(--brass);border-radius:0 8px 8px 0;padding:12px 14px;margin:14px 0 0;word-break:keep-all}
.src-warn b{color:var(--chalk)}
.foot-note{font-family:var(--disp);font-size:15px;line-height:1.9;color:var(--brass-soft);
  word-break:keep-all;margin:0 0 30px;max-width:70ch}
.nspage .footer{margin-top:10px}
@media (prefers-reduced-motion:reduce){.nspage *{transition:none!important;animation:none!important}}
@media (max-width:560px){.pg-h{font-size:25px}}