:root{
  --bg:#0d1526; --bg2:#121c33; --card:#16223d; --card2:#1c2b4d;
  --ink:#eef3ff; --mute:#9fb0d0; --dim:#6e80a6; --line:#25355c;
  --blue:#2f6df6; --blue-d:#1b4bc4; --blue-l:#5b93ff;
  --amber:#ffc542; --amber-d:#c48a00;
  --green:#1fbf75; --green-d:#0f7f4c;
  --red:#ff5a5a; --red-d:#c02a2a;
  --violet:#8b6cf6; --violet-d:#5c42c4;
  --teal:#18b8c4; --teal-d:#0b7d87;
  --r:16px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);
  font-family:'Pretendard','Noto Sans KR','Segoe UI',system-ui,-apple-system,'Helvetica Neue',Arial,sans-serif;
  -webkit-font-smoothing:antialiased;word-break:keep-all}
body{background:radial-gradient(1200px 700px at 15% -10%, #1b2a4d 0%, transparent 60%),
     radial-gradient(900px 600px at 110% 0%, #24204d 0%, transparent 55%), var(--bg);
     min-height:100vh}
a{color:var(--blue-l)}
.wrap{max-width:1180px;margin:0 auto;padding:0 16px 80px}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:40;backdrop-filter:blur(14px);
  background:rgba(13,21,38,.82);border-bottom:1px solid var(--line)}
.hd{max-width:1180px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:11px;margin-right:auto;min-width:0}
.logo .mk{width:42px;height:42px;border-radius:12px;flex:none;display:grid;place-items:center;
  background:linear-gradient(160deg,#4f86ff,#1b4bc4);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.45), 0 5px 0 #12327f, 0 12px 22px rgba(0,0,0,.45);
  font-size:21px}
.logo b{display:block;font-size:17px;letter-spacing:-.01em;line-height:1.2}
.logo span{display:block;font-size:12px;color:var(--mute);line-height:1.3}

/* ---------- 3D buttons ---------- */
.btn{position:relative;border:0;cursor:pointer;color:#fff;font-weight:800;
  font-family:inherit;border-radius:14px;padding:12px 18px;font-size:15px;line-height:1.25;
  background:linear-gradient(180deg,var(--b1),var(--b2));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.4), 0 5px 0 var(--b3), 0 12px 20px rgba(0,0,0,.4);
  transition:transform .06s ease, box-shadow .06s ease, filter .15s ease;
  --b1:#4f86ff; --b2:#2f6df6; --b3:#12327f}
.btn:hover{filter:brightness(1.07)}
.btn:active,.btn.on{transform:translateY(4px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.3), 0 1px 0 var(--b3), 0 5px 10px rgba(0,0,0,.4)}
.btn small{display:block;font-size:11px;font-weight:700;opacity:.82;margin-top:2px;letter-spacing:.01em}
.btn.amber{--b1:#ffd670;--b2:#ffc542;--b3:#a9720a;color:#2a1d00}
.btn.green{--b1:#2ee08c;--b2:#1fbf75;--b3:#0a6b3f}
.btn.red{--b1:#ff7b7b;--b2:#ff5a5a;--b3:#8f1d1d}
.btn.violet{--b1:#a58cff;--b2:#8b6cf6;--b3:#452f9c}
.btn.teal{--b1:#2ddbe6;--b2:#18b8c4;--b3:#086068}
.btn.ghost{--b1:#233152;--b2:#1a2641;--b3:#0b1122;color:var(--ink)}
.btn.sm{padding:9px 13px;font-size:13px;border-radius:11px;box-shadow:inset 0 1px 0 rgba(255,255,255,.35), 0 4px 0 var(--b3), 0 8px 14px rgba(0,0,0,.35)}
.btn.sm:active{transform:translateY(3px);box-shadow:inset 0 1px 0 rgba(255,255,255,.25), 0 1px 0 var(--b3)}

nav.tabs{display:flex;gap:10px;flex-wrap:wrap}

/* ---------- hero ---------- */
.hero{padding:34px 0 8px}
.hero h1{font-size:clamp(26px,4.4vw,42px);line-height:1.2;margin:0 0 8px;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--amber)}
.hero p.ru{color:var(--mute);font-size:clamp(15px,2.2vw,19px);margin:0 0 4px}
.hero p.sub{color:var(--dim);font-size:14px;margin:12px 0 0}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:22px 0 6px}
.stat{background:linear-gradient(180deg,var(--card2),var(--card));border-radius:var(--r);padding:14px 16px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07), 0 5px 0 #0a1224, 0 12px 22px rgba(0,0,0,.35)}
.stat b{display:block;font-size:26px;letter-spacing:-.02em}
.stat span{display:block;font-size:12px;color:var(--mute);margin-top:2px}
.stat i{display:block;font-style:normal;font-size:11px;color:var(--dim)}

/* ---------- section cards ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:14px;margin-top:18px}
.sec-card{text-align:left;width:100%}
.sec-card .t{font-size:16px}
.sec-card .c{font-size:12px;opacity:.85;font-weight:700;margin-top:6px}

/* ---------- question ---------- */
.qlist{margin-top:20px;display:flex;flex-direction:column;gap:16px}
.q{background:linear-gradient(180deg,var(--card2),var(--card));border-radius:20px;padding:18px 18px 16px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07), 0 6px 0 #0a1224, 0 16px 30px rgba(0,0,0,.36)}
.qh{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.qno{background:linear-gradient(180deg,#3b4f80,#26365d);border-radius:10px;padding:5px 11px;font-weight:800;font-size:13px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.2), 0 3px 0 #131d33}
.tag{font-size:11px;font-weight:800;letter-spacing:.04em;padding:5px 10px;border-radius:999px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.25), 0 3px 0 rgba(0,0,0,.35)}
.tag.text{background:#2f6df6}.tag.photo{background:#18b8c4}.tag.illus{background:#8b6cf6}
.tag.sign{background:#ffc542;color:#2a1d00}.tag.video{background:#ff5a5a}
.qimg{margin:0 0 14px;border-radius:14px;overflow:hidden;background:#0a1224;
  box-shadow:0 6px 0 #0a1224, 0 14px 26px rgba(0,0,0,.4)}
.qimg img{display:block;width:100%;height:auto}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.col{min-width:0}
.lab{font-size:10px;font-weight:900;letter-spacing:.16em;color:var(--dim);margin-bottom:7px}
.stem{font-size:15.5px;line-height:1.55;font-weight:700;margin-bottom:11px}
.hints{margin:0 0 11px;padding:9px 12px;background:rgba(47,109,246,.11);border-left:3px solid var(--blue);
  border-radius:0 9px 9px 0;font-size:13px;color:var(--mute);line-height:1.5}
ol.opts{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:7px}
ol.opts li{display:flex;gap:9px;font-size:14px;line-height:1.5;padding:8px 11px;border-radius:10px;
  background:rgba(255,255,255,.035);border:1px solid transparent}
ol.opts li .num{flex:none;width:21px;height:21px;border-radius:50%;background:#2a3a63;color:#cfdcff;
  font-size:12px;font-weight:800;display:grid;place-items:center;margin-top:1px}
ol.opts li.ok{background:linear-gradient(180deg,rgba(31,191,117,.26),rgba(31,191,117,.14));
  border-color:rgba(31,191,117,.6);color:#d9ffe9;font-weight:700}
ol.opts li.ok .num{background:var(--green);color:#06301c;box-shadow:0 0 0 3px rgba(31,191,117,.22)}
.ansline{margin-top:12px;font-size:13px;color:var(--green);font-weight:800;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.ansline b{background:rgba(31,191,117,.16);border:1px solid rgba(31,191,117,.45);padding:3px 9px;border-radius:8px}

/* ---------- exam ---------- */
.bar{position:sticky;top:66px;z-index:30;display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  background:linear-gradient(180deg,#1b2a4d,#16223d);border-radius:16px;padding:12px 15px;margin-top:16px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08), 0 6px 0 #0a1224, 0 14px 26px rgba(0,0,0,.4)}
.timer{font-variant-numeric:tabular-nums;font-size:24px;font-weight:900;letter-spacing:.02em;
  background:linear-gradient(180deg,#0f1a30,#0a1224);padding:6px 14px;border-radius:12px;
  box-shadow:inset 0 2px 6px rgba(0,0,0,.6);color:var(--amber)}
.timer.warn{color:var(--red);animation:pulse 1s infinite}
@keyframes pulse{50%{opacity:.45}}
.prog{flex:1;min-width:140px;height:10px;border-radius:99px;background:#0a1224;overflow:hidden;
  box-shadow:inset 0 2px 5px rgba(0,0,0,.6)}
.prog i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--teal));border-radius:99px;transition:width .25s}
.meta{font-size:13px;color:var(--mute);font-weight:700}
.meta b{color:var(--ink)}
ol.opts li.pick{cursor:pointer;transition:background .12s, transform .06s}
ol.opts li.pick:hover{background:rgba(47,109,246,.16)}
ol.opts li.sel{background:linear-gradient(180deg,rgba(47,109,246,.34),rgba(47,109,246,.18));
  border-color:var(--blue-l);font-weight:700}
ol.opts li.sel .num{background:var(--blue);color:#fff;box-shadow:0 0 0 3px rgba(47,109,246,.25)}
ol.opts li.bad{background:linear-gradient(180deg,rgba(255,90,90,.26),rgba(255,90,90,.13));border-color:rgba(255,90,90,.6)}
ol.opts li.bad .num{background:var(--red);color:#3a0000}

/* ---------- result ---------- */
.result{text-align:center;padding:34px 20px;border-radius:22px;margin-top:18px;
  background:linear-gradient(180deg,var(--card2),var(--card));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08), 0 8px 0 #0a1224, 0 20px 40px rgba(0,0,0,.45)}
.result .score{font-size:clamp(48px,11vw,84px);font-weight:900;letter-spacing:-.04em;line-height:1}
.result .pf{display:inline-block;margin:14px 0 6px;padding:11px 30px;border-radius:999px;font-weight:900;font-size:22px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.35), 0 5px 0 rgba(0,0,0,.35)}
.pf.pass{background:linear-gradient(180deg,#2ee08c,#1fbf75);color:#04301c}
.pf.fail{background:linear-gradient(180deg,#ff7b7b,#ff5a5a);color:#3c0000}
.result .ru{color:var(--mute);font-size:15px;margin-top:6px}
.kpi{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin-top:22px}
.kpi div{background:rgba(255,255,255,.05);border-radius:13px;padding:11px}
.kpi b{display:block;font-size:21px}
.kpi span{font-size:11px;color:var(--mute)}

table.mix{width:100%;border-collapse:collapse;margin-top:14px;font-size:13px}
table.mix th,table.mix td{padding:9px 10px;border-bottom:1px solid var(--line);text-align:left}
table.mix th{color:var(--dim);font-size:11px;letter-spacing:.1em;text-transform:uppercase}
table.mix td.n{text-align:right;font-variant-numeric:tabular-nums}

.empty{text-align:center;padding:60px 20px;color:var(--mute)}
.empty .big{font-size:44px;margin-bottom:10px}
.pager{display:flex;gap:9px;justify-content:center;margin-top:24px;flex-wrap:wrap;align-items:center}
.hide{display:none!important}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px;align-items:center}
.search{flex:1;min-width:180px;background:#0f1a30;border:1px solid var(--line);color:var(--ink);
  border-radius:12px;padding:11px 14px;font-size:14px;font-family:inherit;
  box-shadow:inset 0 2px 6px rgba(0,0,0,.5)}
.search::placeholder{color:var(--dim)}
footer{color:var(--dim);font-size:12px;text-align:center;padding:30px 16px;line-height:1.7}
@media (max-width:760px){ .cols{grid-template-columns:1fr;gap:14px}
  .bar{top:60px} .hd{padding:10px 14px} }

/* 한국어 + 러시아어 (+ 영어) 나란히 */
.cols.three{grid-template-columns:1fr 1fr 1fr;gap:14px}
.cols.three .stem{font-size:14.5px}
.cols.three ol.opts li{font-size:13px;padding:7px 9px}
ol.opts[data-nopick] li{cursor:default;opacity:.92}
.expl{margin-top:12px;background:rgba(139,108,246,.12);border-left:3px solid var(--violet);
  border-radius:0 10px 10px 0;padding:11px 14px;font-size:13.5px;line-height:1.6;color:#cfd8f5}
.expl .et{display:inline-block;font-size:10px;font-weight:900;letter-spacing:.12em;color:var(--violet);
  background:rgba(139,108,246,.2);border-radius:6px;padding:3px 8px;margin-right:9px;vertical-align:1px}
@media (max-width:980px){ .cols.three{grid-template-columns:1fr} }

/* 정답 = 문장 */
.ansbox{margin-top:14px;background:linear-gradient(180deg,rgba(31,191,117,.16),rgba(31,191,117,.07));
  border:1px solid rgba(31,191,117,.35);border-radius:14px;padding:13px 15px}
.ansbox .at{font-size:12px;font-weight:800;color:#8ff0c2;letter-spacing:.01em;margin-bottom:10px}
.ansbox .at b{color:#d9ffe9}
.arow{display:flex;gap:11px;align-items:flex-start;margin-bottom:8px}
.arow .ac{flex:none;width:23px;height:23px;border-radius:50%;background:var(--green);color:#04301c;
  font-weight:900;font-size:13px;display:grid;place-items:center;margin-top:1px}
.arow b{display:block;font-size:14.5px;line-height:1.5;color:#eafff3;font-weight:700}
.arow span{display:block;font-size:13px;line-height:1.5;color:#9fd9bd;margin-top:3px}
.ansbox .ahint{margin-top:10px;padding-top:9px;border-top:1px dashed rgba(31,191,117,.3);
  font-size:11.5px;color:#8fbfa8;line-height:1.6}
.ansbox .ahint span{color:#6f9d89}
.q.warn{background:linear-gradient(180deg,#2c2140,#1d1730);border-bottom-color:#4a2d5e}
.q.warn h2 em{background:none;color:var(--amber);padding:0}

/* ---------- 응시자 · пользователи ---------- */
.who{display:flex;align-items:center;gap:9px;cursor:pointer;border:1px solid var(--line);
  background:linear-gradient(180deg,#1b2a4d,#141f38);border-radius:999px;padding:5px 14px 5px 5px;
  color:var(--ink);font-family:inherit;box-shadow:0 3px 0 #0b1122, 0 8px 14px rgba(0,0,0,.3)}
.who:hover{filter:brightness(1.1)}
.who:active{transform:translateY(3px);box-shadow:0 1px 0 #0b1122}
.who .av{width:30px;height:30px;flex:0 0 30px;border-radius:50%;display:grid;place-items:center;
  font-weight:900;font-size:14px;color:#04222a;background:linear-gradient(180deg,#2ddbe6,#18b8c4)}
.who.anon .av{background:linear-gradient(180deg,#5b6b90,#3c4966);color:#dbe4f7}
.who .wt{text-align:left;line-height:1.15}
.who .wt b{display:block;font-size:13px;font-weight:800}
.who .wt small{display:block;font-size:10.5px;color:var(--dim)}

.whoami{background:rgba(255,255,255,.06);border-radius:12px;padding:10px 14px;margin:0 auto 18px;
  max-width:560px;font-size:13.5px;color:var(--mute);line-height:1.6}
.whoami b{color:var(--ink)}
.whoami span{font-size:12px;color:var(--dim)}

.nameform{background:linear-gradient(180deg,#16233f,#121b30);border:1px solid var(--line);
  border-radius:var(--r);padding:16px 18px;margin-top:14px}
.nameform label{display:block;margin-bottom:10px}
.nameform label b{display:block;font-size:15px}
.nameform label span{display:block;font-size:12px;color:var(--dim);margin-top:2px}
.nameform .row{display:flex;gap:10px;flex-wrap:wrap}
.search.bad{border-color:var(--red);animation:shake .3s}
@keyframes shake{25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}

.userpick{display:flex;gap:10px;flex-wrap:wrap;margin-top:6px}
.userpick .lab{width:100%;font-size:12px;color:var(--dim);margin-bottom:2px}
.ucard{display:flex;align-items:center;gap:10px;cursor:pointer;font-family:inherit;color:var(--ink);
  background:linear-gradient(180deg,var(--card2),var(--card));border:1px solid var(--line);
  border-radius:14px;padding:9px 15px 9px 9px;box-shadow:0 4px 0 #0b1122, 0 9px 16px rgba(0,0,0,.3)}
.ucard:active{transform:translateY(3px);box-shadow:0 1px 0 #0b1122}
.ucard.on{border-color:var(--teal);box-shadow:0 4px 0 var(--teal-d), 0 9px 18px rgba(0,0,0,.35)}
.ucard .av{width:34px;height:34px;flex:0 0 34px;border-radius:50%;display:grid;place-items:center;
  font-weight:900;color:#04222a;background:linear-gradient(180deg,#2ddbe6,#18b8c4)}
.ucard .un{font-weight:800;font-size:14px}
.ucard .us{font-size:11px;color:var(--dim)}

/* 점수 추이 · динамика баллов */
.chart{background:linear-gradient(180deg,var(--card),#111a2e);border:1px solid var(--line);
  border-radius:var(--r);padding:16px 18px 12px;margin-top:18px}
.ctit{font-size:13px;color:var(--mute);font-weight:700;margin-bottom:14px}
.plot{position:relative;display:flex;align-items:flex-end;gap:10px;height:196px;padding-bottom:22px;
  overflow-x:auto;overflow-y:visible}
.plot .line60{position:absolute;left:0;right:0;bottom:calc(22px + (100% - 22px) * .6);
  border-top:2px dashed #52648c;pointer-events:none;z-index:2}
.plot .line60 span{position:absolute;left:0;top:-9px;font-size:10.5px;color:#8fa2c6;
  background:#131d33;padding:1px 7px;border-radius:99px}
.plot .b{position:relative;flex:1 1 0;min-width:36px;height:100%}
.plot .b i{position:absolute;left:0;right:0;bottom:0;height:var(--h);min-height:3px;
  border-radius:8px 8px 3px 3px;box-shadow:inset 0 1px 0 rgba(255,255,255,.4)}
.plot .b.p i{background:linear-gradient(180deg,#2ee08c,#0f7f4c)}
.plot .b.f i{background:linear-gradient(180deg,#ff8f8f,#c02a2a)}
.plot .b i b{position:absolute;left:0;right:0;top:-19px;text-align:center;font-size:12.5px;
  font-weight:900;font-variant-numeric:tabular-nums}
.plot .b.p i b{color:#6ff0b6} .plot .b.f i b{color:#ffb0b0}
.plot .b small{position:absolute;left:0;right:0;bottom:-20px;text-align:center;
  font-size:10px;color:var(--dim);font-variant-numeric:tabular-nums}

/* 시험 기록 · история */
.hist{margin-top:6px}
.hrow{display:flex;align-items:center;gap:12px;flex-wrap:wrap;cursor:pointer;position:relative;
  background:linear-gradient(180deg,var(--card2),var(--card));border:1px solid var(--line);
  border-left:5px solid var(--dim);border-radius:13px;padding:12px 44px 12px 14px;margin-bottom:9px}
.hrow:hover{filter:brightness(1.08)}
.hrow.p{border-left-color:var(--green)}
.hrow.f{border-left-color:var(--red)}
.hrow.open{border-color:var(--blue-l)}
.hrow .d{font-size:13px;color:var(--mute);font-variant-numeric:tabular-nums;min-width:132px}
.hrow .sc{font-size:22px;font-weight:900;font-variant-numeric:tabular-nums}
.hrow .sc small{font-size:12px;color:var(--dim);font-weight:700}
.hrow.p .sc{color:var(--green)} .hrow.f .sc{color:var(--red)}
.hrow .pf{font-size:12px;font-weight:800;padding:4px 10px;border-radius:999px}
.hrow.p .pf{background:rgba(31,191,117,.16);color:#6ff0b6}
.hrow.f .pf{background:rgba(255,90,90,.15);color:#ffb0b0}
.hrow .mt{font-size:12px;color:var(--mute);font-variant-numeric:tabular-nums}
.hrow .ms{font-size:12px;color:var(--violet);font-weight:700}
.hrow .ex{margin-left:auto;font-size:12px;color:var(--blue-l);font-weight:700}
.hrow .del{position:absolute;right:10px;top:50%;transform:translateY(-50%);width:26px;height:26px;
  border:0;border-radius:8px;background:rgba(255,255,255,.07);color:var(--dim);cursor:pointer;font-size:13px}
.hrow .del:hover{background:var(--red);color:#fff}
@media(max-width:640px){
  .hrow{padding:12px 40px 12px 12px;gap:8px}
  .hrow .d{min-width:100%}
  .hrow .ex{margin-left:0;width:100%}
  .who .wt{display:none} .who{padding:5px}
}

/* ---------- 안내 카드 ---------- */
.cards{display:grid;grid-template-columns:1fr;gap:14px;margin:16px 0}
.cards.c2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.card{background:linear-gradient(180deg,var(--card2),var(--card));border:1px solid var(--line);
  border-bottom:4px solid var(--blue-d);border-radius:14px;padding:14px 16px}
.card .t{font-weight:900;font-size:15px;margin-bottom:8px;color:var(--blue-l)}
.card .d{font-size:13.5px;line-height:1.75;color:var(--mute)}
.card .d b{color:var(--ink)}
.q.warn{border-color:#6a3a2a;background:linear-gradient(180deg,#2a1e33,#1a1526)}