/* Setup/results follow the site theme; the active exercise shell stays black. */
#ef{--bg:var(--card,#fff);--panel:var(--card,#fff);--ink:var(--text,#26352f);--muted:inherit;--accent:#287555;--line:var(--border,#dde5df);max-width:960px;margin:22px auto;background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:26px;overflow:hidden;font:14px/1.6 system-ui,-apple-system,'Noto Sans KR',sans-serif;isolation:isolate;color-scheme:light}#ef::backdrop{background:var(--bg)}#ef *{box-sizing:border-box}#ef [hidden]{display:none!important}#ef button,#ef select{font:inherit;min-height:46px;border:1px solid var(--line);border-radius:12px;background:var(--panel);color:var(--ink);padding:9px 14px;cursor:pointer;touch-action:manipulation}#ef button:focus-visible,#ef select:focus-visible{outline:3px solid var(--accent);outline-offset:3px}#ef button:disabled{opacity:.5;cursor:default}#ef button:hover:not(:disabled){border-color:var(--accent)}#ef .ef-primary{background:#a9e7c9;color:#10251d;font-weight:750;border-color:transparent}#ef h2,#ef h3,#ef p{color:inherit;margin:0}#ef .ef-bar{display:flex;align-items:center;justify-content:space-between;gap:8px;border-bottom:1px solid var(--line);padding:12px 20px;background:var(--bg)}#ef .ef-bar b{font-size:13px;letter-spacing:1.4px}#ef .ef-bar small{display:block;font-size:11px;letter-spacing:0;color:var(--muted)}#ef .ef-logo{font-size:23px;vertical-align:middle;margin-right:7px}#ef-home,#ef-result{padding:22px}#ef .ef-intro{position:relative;padding:10px 0 24px;overflow:hidden}#ef .ef-eyebrow{font-size:11px;font-weight:700;letter-spacing:1.8px;color:var(--muted)}#ef h2{font-size:clamp(23px,3.7vw,30px);line-height:1.35;letter-spacing:-.8px;margin:14px 0;position:relative;z-index:1}#ef .ef-intro p{color:var(--muted);font-size:13px;position:relative;z-index:1}#ef .ef-orbit{position:absolute;right:0;top:5px;width:190px;height:190px;border:1px solid var(--line);border-radius:50%;transform:rotate(-28deg) scaleY(.65);display:grid;place-items:center}#ef .ef-orbit:before{content:'';position:absolute;inset:25px -15px;border:1px solid var(--line);border-radius:50%;transform:rotate(65deg)}#ef .ef-orbit span{width:75px;height:110px;display:block;background:radial-gradient(circle at 32% 27%,#e0f7eb 0%,#9bd2b4 19%,#4e9571 48%,#123c29 76%,#04140c 100%);border-radius:50%;box-shadow:0 0 50px #52987633}#ef .ef-orbit i{width:12px;height:12px;background:#b8deca;position:absolute;border-radius:50%;right:8px;top:42px}#ef .ef-settings{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:8px 0 20px}#ef label{font-size:13px;font-weight:650;color:var(--muted);display:block}#ef select{width:100%;font-size:14px;margin-top:6px;padding:10px 6px}#ef .ef-all{width:100%;display:flex;align-items:center;justify-content:space-between;text-align:left;padding:15px 18px;font-size:16px}#ef .ef-all span{font-size:13px;font-weight:500}#ef .ef-note{font-size:13px;color:var(--muted);margin:12px 0 18px;line-height:1.8}#ef .ef-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:24px}#ef .ef-card{text-align:left;padding:18px;display:flex;flex-direction:column;gap:6px}#ef .ef-card span{color:var(--accent);font-size:27px}#ef .ef-card strong{font-size:15px}#ef .ef-card small{font-size:13px;color:var(--muted);line-height:1.6}#ef footer{border-top:1px solid var(--line);padding:14px 24px;font-size:12px;color:var(--muted);background:var(--bg)}#ef summary{cursor:pointer;font-weight:650;padding:12px 0}#ef-history p{padding:10px 0;border-bottom:1px solid var(--line);font-size:13px}
#ef-session{padding:20px;display:flex;flex-direction:column;gap:10px;background:#000}#ef .ef-session-head{display:flex;justify-content:space-between;align-items:center;gap:12px}#ef .ef-session-head h3{font-size:18px}#ef-time{font-size:21px;font-variant-numeric:tabular-nums;white-space:nowrap}#ef-instruction{font-size:13px;min-height:24px;color:var(--muted)!important}#ef-arena{height:420px;min-height:200px;position:relative;border:1px solid #15221c;background:#000;border-radius:18px;overflow:hidden;user-select:none;-webkit-user-select:none}#ef-canvas{display:block;width:100%;height:100%;background:#000}#ef .ef-live-settings{display:flex;justify-content:center;gap:16px}#ef .ef-live-settings label{display:flex;align-items:center;gap:8px;font-size:12px}#ef .ef-live-settings select{width:auto;margin:0;min-height:44px;font-size:13px}#ef .ef-toolbar{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}#ef .ef-toolbar button{font-size:13px}#ef-overlay{position:absolute;inset:0;z-index:3;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:20px;text-align:center;background:#000}#ef-overlay h3{font-size:20px}#ef-overlay p{max-width:510px;font-size:13px;color:var(--muted)}#ef .ef-report{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:22px 0}#ef .ef-report article{background:var(--panel);padding:18px;border:1px solid var(--line);border-radius:14px}#ef .ef-report strong{display:block;font-size:15px;margin-bottom:8px}#ef .ef-report p{font-size:14px;color:var(--muted)}#ef-result>button{margin:4px}#ef-save-note{font-size:13px;margin-top:12px}
#ef.ef-full{position:fixed;inset:0;top:var(--ef-top,0px);width:100%;height:var(--ef-height,100dvh);max-width:none;margin:0;border:0;border-radius:0;z-index:2147483646;overflow:auto;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);overscroll-behavior:contain;background:var(--bg)}#ef.ef-full.ef-in-session{display:flex;flex-direction:column}#ef.ef-full #ef-session{flex:1;min-height:0;width:100%;margin:0 auto;max-width:1600px}#ef.ef-full #ef-arena{flex:1;height:auto;min-height:180px;border-color:transparent;border-radius:0}#ef.ef-full #ef-home,#ef.ef-full #ef-result{max-width:960px;margin:auto;width:100%}#ef.ef-full .ef-bar{border-color:transparent}#ef.ef-full footer{border-color:transparent}body.ef-locked{overflow:hidden!important;background:#000!important}.ef-science.answer_shadow{margin:18px auto;max-width:960px;font-size:13px;line-height:1.7;padding:18px 20px;text-align:left}.ef-science h3{font-size:15px;line-height:1.5;margin:0 0 10px;font-weight:700}.ef-science p{font-size:13px;line-height:1.7;margin:8px 0}.ef-science a{text-decoration:underline}.ef-science summary{cursor:pointer;font-size:13px;padding:8px 0}.ef-science ul{padding-left:18px;margin:6px 0}.ef-science li{font-size:12px;line-height:1.6;margin:6px 0}
@media(max-width:650px){#ef{border-radius:20px}#ef-home,#ef-result{padding:20px}#ef .ef-bar{padding:12px 16px}#ef .ef-bar button{font-size:12px;padding:8px 10px}#ef .ef-orbit{width:120px;height:120px;right:-35px;top:0;opacity:.4}#ef .ef-orbit span{width:45px;height:65px}#ef .ef-settings{grid-template-columns:repeat(2,minmax(0,1fr))}#ef .ef-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}#ef .ef-card{padding:13px}#ef .ef-card strong{font-size:15px}#ef .ef-all{padding:15px;font-size:16px;align-items:flex-start;flex-direction:column;gap:5px}#ef-session{padding:14px;gap:8px}#ef-arena{height:350px}#ef .ef-report{grid-template-columns:1fr}#ef footer{padding:12px 16px}#ef .ef-toolbar{gap:6px}#ef .ef-toolbar button{padding:8px 10px}#ef .ef-live-settings{gap:10px}#ef .ef-live-settings label{gap:5px}#ef .ef-live-settings select{font-size:12px;padding:8px 5px}#ef.ef-full footer{font-size:11px;padding:6px 14px}}
@media(max-height:540px) and (orientation:landscape){#ef.ef-full .ef-bar{padding:3px 14px}#ef.ef-full .ef-bar small,#ef.ef-full footer{display:none}#ef.ef-full #ef-session{display:grid;grid-template-columns:minmax(0,1fr) 200px;grid-template-rows:48px 1fr auto;gap:6px 12px;padding:8px 14px}#ef.ef-full .ef-session-head{grid-column:1;grid-row:1}#ef.ef-full .ef-session-head h3{font-size:17px}#ef.ef-full #ef-instruction{grid-column:2;grid-row:1/3;font-size:12px;align-self:start}#ef.ef-full #ef-arena{grid-column:1;grid-row:2/5;min-height:140px;height:100%}#ef.ef-full .ef-live-settings{grid-column:2;grid-row:2;align-self:end;flex-direction:column;gap:5px}#ef.ef-full .ef-live-settings label{justify-content:space-between}#ef.ef-full .ef-live-settings select{min-width:145px}#ef.ef-full .ef-toolbar{grid-column:2;grid-row:3/5}#ef.ef-full .ef-toolbar button{min-height:44px;font-size:12px;padding:7px 9px}#ef.ef-full #ef-overlay{gap:6px;padding:12px}#ef.ef-full #ef-overlay h3{font-size:20px}#ef.ef-full #ef-overlay p{font-size:13px}}
@media(max-height:700px) and (orientation:portrait){#ef.ef-full .ef-bar{padding:5px 12px}#ef.ef-full .ef-bar small,#ef.ef-full footer{display:none}#ef.ef-full #ef-session{padding:8px 12px;gap:6px}#ef.ef-full .ef-session-head h3{font-size:18px}#ef.ef-full #ef-time{font-size:21px}#ef.ef-full #ef-instruction{font-size:12px}#ef.ef-full #ef-arena{min-height:140px}#ef.ef-full #ef-overlay{gap:7px;padding:12px}#ef.ef-full #ef-overlay h3{font-size:21px}#ef.ef-full #ef-overlay p{font-size:13px}}

[data-theme="dark"] #ef{color-scheme:dark;--accent:#a9e7c9}
#ef.ef-in-session{--bg:#000;--panel:#0a0e10;--ink:#ecf4f1;--muted:#a0b1ab;--accent:#a9e7c9;--line:#26332e;color-scheme:dark}