/* 문제은행 CBT · 성적 리포트 */
#qb-app{min-height:70vh;background:var(--cs-cream)}
.qb-hero{background:linear-gradient(135deg,var(--cs-deep),var(--cs-teal));color:#fff;padding:48px 0 56px}
.qb-hero h1{font-size:36px;font-weight:900;margin:12px 0 10px;letter-spacing:-.02em}
.qb-hero p{opacity:.88;font-size:16.5px;line-height:1.7;max-width:640px}
.qb-tabs{display:flex;gap:8px;margin-top:24px;flex-wrap:wrap}
.qb-tabs a{height:40px;padding:0 16px;border-radius:999px;display:inline-flex;align-items:center;font-weight:800;font-size:14.5px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25)}
.qb-tabs a.on{background:#fff;color:var(--cs-teal)}
.qb-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:-30px;position:relative}
.qb-stat{background:#fff;border:1px solid var(--cs-line);border-radius:16px;padding:16px 18px;box-shadow:0 12px 26px -22px rgba(22,63,60,.5)}
.qb-stat b{display:block;font-size:26px;font-weight:900;color:var(--cs-teal)}
.qb-stat span{font-size:13px;color:var(--cs-sub)}
.qb-stagehead{display:flex;align-items:center;gap:10px;margin:34px 0 12px;font-weight:900;font-size:17px}
.qb-stagehead i{width:10px;height:10px;border-radius:3px;background:var(--c)}
.qb-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.qb-card{background:#fff;border:1px solid var(--cs-line);border-radius:18px;padding:18px;display:flex;flex-direction:column;gap:10px;border-top:4px solid var(--c);transition:transform .15s,box-shadow .15s}
.qb-card:hover{transform:translateY(-2px);box-shadow:0 16px 30px -22px rgba(22,63,60,.6)}
.qb-card .top{display:flex;justify-content:space-between;align-items:center}
.qb-card .no{font-size:13px;font-weight:900;color:var(--c)}
.qb-card h3{font-size:17px;font-weight:900;line-height:1.4;min-height:48px}
.qb-card .meta{font-size:13px;color:var(--cs-sub)}
.qb-badge{font-size:12.5px;font-weight:900;padding:4px 10px;border-radius:999px;background:var(--cs-cream-2);color:var(--cs-sub)}
.qb-badge.g1{background:#E3F4EC;color:#1E7A50}.qb-badge.g2{background:#E6F0EF;color:var(--cs-teal)}.qb-badge.g3{background:#FBF3E2;color:#9A6410}.qb-badge.g4{background:#FBEAEA;color:#B23A3A}
.qb-card .act{display:flex;gap:8px;margin-top:auto}
.qb-card .act .cs-btn{height:40px;font-size:14px;padding:0 14px;flex:1}
.qb-bar{height:6px;border-radius:6px;background:var(--cs-cream-2);overflow:hidden}
.qb-bar i{display:block;height:100%;background:var(--c,var(--cs-teal));border-radius:6px}

/* 응시 시작 모달 */
.qb-modal{position:fixed;inset:0;z-index:300;background:rgba(14,30,28,.55);display:grid;place-items:center;padding:20px}
.qb-modal__box{background:#fff;border-radius:22px;max-width:520px;width:100%;padding:28px;box-shadow:var(--cs-shadow)}
.qb-modal h3{font-size:22px;font-weight:900;margin-bottom:6px}
.qb-modal p{color:var(--cs-sub);font-size:14.5px;line-height:1.6}
.qb-field{display:flex;flex-direction:column;gap:6px;margin-top:14px}
.qb-field label{font-size:13.5px;font-weight:800}
.qb-field input{height:46px;border:1.5px solid var(--cs-line);border-radius:12px;padding:0 14px;font:inherit;font-size:15px}
.qb-field input:focus{outline:none;border-color:var(--cs-teal)}
.qb-rules{margin:16px 0 0;padding:14px 16px;background:var(--cs-cream);border-radius:12px;font-size:13.5px;color:var(--cs-sub);line-height:1.7}
.qb-check{display:flex;gap:8px;align-items:center;margin-top:12px;font-size:14px}
.qb-modal .row{display:flex;gap:10px;margin-top:20px}
.qb-modal .row .cs-btn{flex:1}

/* CBT 시험 화면 */
.qb-exam{background:#EEF1F0;min-height:100vh}
.qb-top{position:sticky;top:0;z-index:50;background:var(--cs-deep);color:#fff}
.qb-top .cs-wrap{display:flex;align-items:center;gap:16px;height:62px}
.qb-top .t{font-weight:900;font-size:16px}
.qb-top .t small{display:block;font-size:12px;font-weight:600;opacity:.7}
.qb-timer{margin-left:auto;display:flex;align-items:center;gap:8px;font-variant-numeric:tabular-nums;font-weight:900;font-size:22px;background:rgba(255,255,255,.1);padding:6px 14px;border-radius:10px}
.qb-timer.warn{background:var(--cs-coral)}
.qb-top .cs-btn{height:42px;font-size:14.5px}
.qb-font{display:flex;gap:4px}
.qb-font button{width:34px;height:34px;border-radius:8px;border:1px solid rgba(255,255,255,.3);background:transparent;color:#fff;font-weight:900;cursor:pointer}
.qb-body .cs-wrap{display:grid;grid-template-columns:1fr 280px;gap:20px;padding-top:22px;padding-bottom:40px}
.qb-q{background:#fff;border-radius:20px;padding:30px;box-shadow:0 10px 24px -20px rgba(0,0,0,.4)}
.qb-q .meta{display:flex;gap:8px;align-items:center;margin-bottom:14px;flex-wrap:wrap}
.qb-q .meta span{font-size:12.5px;font-weight:800;padding:3px 10px;border-radius:999px;background:var(--cs-mint);color:var(--cs-teal)}
.qb-q h2{font-size:calc(20px * var(--fs,1));line-height:1.6;font-weight:800;margin-bottom:22px}
.qb-q h2 b{color:var(--cs-coral);margin-right:6px}
.qb-opts{display:flex;flex-direction:column;gap:10px}
.qb-opt{display:flex;gap:14px;align-items:flex-start;padding:15px 18px;border:2px solid var(--cs-line);border-radius:14px;cursor:pointer;font-size:calc(16.5px * var(--fs,1));line-height:1.55;transition:border-color .12s,background .12s;background:#fff;text-align:left;font-family:inherit;color:inherit;width:100%}
.qb-opt:hover{border-color:#B9CFCB;background:#FAFCFB}
.qb-opt .n{flex:none;width:30px;height:30px;border-radius:50%;border:2px solid #C5CFCC;display:grid;place-items:center;font-weight:900;font-size:14px;color:var(--cs-sub)}
.qb-opt.sel{border-color:var(--cs-teal);background:#F1F8F6}
.qb-opt.sel .n{background:var(--cs-teal);border-color:var(--cs-teal);color:#fff}
.qb-nav{display:flex;gap:10px;margin-top:22px;align-items:center}
.qb-nav .cs-btn{height:46px}
.qb-flag{margin-left:auto;display:inline-flex;align-items:center;gap:6px;height:46px;padding:0 16px;border-radius:12px;border:1.5px solid var(--cs-line);background:#fff;font-weight:800;cursor:pointer;font-family:inherit}
.qb-flag.on{border-color:#E39B2E;background:#FFF6E6;color:#9A6410}
.qb-sheet{background:#fff;border-radius:20px;padding:20px;position:sticky;top:84px;align-self:start;box-shadow:0 10px 24px -20px rgba(0,0,0,.4)}
.qb-sheet h4{font-size:15px;font-weight:900;margin-bottom:12px}
.qb-cells{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}
.qb-cell{height:42px;border-radius:10px;border:1.5px solid var(--cs-line);background:#fff;font-weight:900;font-size:14px;cursor:pointer;position:relative;font-family:inherit;color:var(--cs-sub)}
.qb-cell.ans{background:var(--cs-teal);border-color:var(--cs-teal);color:#fff}
.qb-cell.flag::after{content:"";position:absolute;top:4px;right:4px;width:8px;height:8px;border-radius:50%;background:#E39B2E}
.qb-cell.cur{outline:3px solid var(--cs-coral);outline-offset:1px}
.qb-legend{display:flex;gap:12px;flex-wrap:wrap;font-size:12px;color:var(--cs-sub);margin-top:12px}
.qb-legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:4px;vertical-align:-1px}
.qb-progress{margin-top:14px;font-size:13px;color:var(--cs-sub)}
.qb-sheet .cs-btn{width:100%;margin-top:14px}
.qb-keys{margin-top:12px;font-size:12px;color:#8A918E;line-height:1.6}

/* 성적 리포트 */
.qb-report .cs-wrap{padding-top:30px;padding-bottom:60px}
.qb-rhead{background:linear-gradient(135deg,var(--cs-deep),var(--cs-teal));color:#fff;border-radius:24px;padding:28px;display:grid;grid-template-columns:auto 1fr auto;gap:28px;align-items:center}
.qb-ring{--p:0;width:150px;height:150px;border-radius:50%;background:conic-gradient(var(--cs-peach) calc(var(--p)*1%),rgba(255,255,255,.15) 0);display:grid;place-items:center}
.qb-ring div{width:118px;height:118px;border-radius:50%;background:var(--cs-deep);display:grid;place-items:center;text-align:center}
.qb-ring b{font-size:38px;font-weight:900;line-height:1}
.qb-ring small{display:block;font-size:12px;opacity:.75;margin-top:4px}
.qb-rhead h2{font-size:24px;font-weight:900;margin:6px 0 8px}
.qb-rhead p{opacity:.85;font-size:14.5px;line-height:1.6}
.qb-grade{display:inline-block;font-weight:900;font-size:14px;padding:5px 12px;border-radius:999px;background:var(--cs-coral)}
.qb-rkpi{display:grid;grid-template-columns:repeat(2,auto);gap:10px 22px;font-size:13.5px}
.qb-rkpi b{display:block;font-size:20px;font-weight:900}
.qb-panels{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px}
.qb-panel{background:#fff;border:1px solid var(--cs-line);border-radius:20px;padding:22px}
.qb-panel h3{font-size:17px;font-weight:900;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.qb-row{display:grid;grid-template-columns:150px 1fr 54px;gap:12px;align-items:center;margin-bottom:11px;font-size:13.5px}
.qb-row .lbl{font-weight:700;line-height:1.35}
.qb-row .v{text-align:right;font-weight:900}
.qb-row .qb-bar{height:10px}
.qb-coach{background:#fff;border:1px solid var(--cs-line);border-radius:20px;padding:24px;margin-top:16px;border-left:6px solid var(--cs-coral)}
.qb-coach h3{font-size:19px;font-weight:900;margin-bottom:10px}
.qb-coach p{font-size:15px;line-height:1.75;color:#33403C}
.qb-coach ul{margin:10px 0 0;padding-left:20px;font-size:14.5px;line-height:1.8;color:#33403C}
.qb-plan{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:14px}
.qb-plan div{background:var(--cs-cream);border-radius:14px;padding:14px 16px;font-size:14px;line-height:1.6}
.qb-plan b{display:block;color:var(--cs-coral);font-size:13px;margin-bottom:4px}
.qb-review{margin-top:16px}
.qb-item{background:#fff;border:1px solid var(--cs-line);border-radius:16px;padding:18px 20px;margin-bottom:10px}
.qb-item .h{display:flex;gap:10px;align-items:center;margin-bottom:8px;flex-wrap:wrap}
.qb-ok{color:#1E7A50;font-weight:900}.qb-ng{color:#B23A3A;font-weight:900}
.qb-item .q{font-weight:800;line-height:1.6}
.qb-item .ans{font-size:14px;margin-top:8px;line-height:1.7}
.qb-item .ex{font-size:14px;color:#33403C;background:var(--cs-cream);border-radius:10px;padding:10px 12px;margin-top:8px;line-height:1.65}
.qb-item .tip{font-size:13.5px;color:var(--cs-teal);margin-top:6px}
.qb-filter{display:flex;gap:8px;margin:20px 0 10px}
.qb-filter button{height:36px;padding:0 14px;border-radius:999px;border:1px solid var(--cs-line);background:#fff;font-weight:800;cursor:pointer;font-family:inherit}
.qb-filter button.on{background:var(--cs-teal);color:#fff;border-color:var(--cs-teal)}
.qb-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.qb-spark{display:flex;align-items:flex-end;gap:5px;height:60px;margin-top:6px}
.qb-spark i{flex:1;max-width:26px;background:var(--cs-teal);border-radius:5px 5px 0 0;opacity:.85}
.qb-empty{text-align:center;padding:70px 20px;color:var(--cs-sub)}
@media (max-width:980px){
  .qb-grid{grid-template-columns:1fr 1fr}.qb-stats{grid-template-columns:1fr 1fr}
  .qb-body .cs-wrap{grid-template-columns:1fr}.qb-sheet{position:static}
  .qb-rhead{grid-template-columns:1fr;justify-items:start}.qb-panels,.qb-plan{grid-template-columns:1fr}
}
@media (max-width:600px){.qb-grid{grid-template-columns:1fr}.qb-row{grid-template-columns:110px 1fr 46px}.qb-q{padding:20px}.qb-top .t small{display:none}.qb-font{display:none}}
@media print{.cs-header,.cs-drawer,footer,.qb-actions,.qb-filter,.qb-tabs{display:none!important}#qb-app{background:#fff}.qb-panel,.qb-item,.qb-coach{break-inside:avoid}}
/* 수강 권한 안내 · 잠긴 강 */
.qb-access{display:flex;align-items:center;gap:14px;margin:0 0 22px;padding:14px 18px;border-radius:16px;background:#F6F4FF;border:1px solid #E3DEFB}
.qb-access>span{font-size:22px}.qb-access p{flex:1;margin:0;font-size:14.5px;line-height:1.6}
.qb-access .cs-btn{height:42px;white-space:nowrap}
.qb-card.is-locked{opacity:.62;background:repeating-linear-gradient(-45deg,#fff,#fff 10px,#FAFAF8 10px,#FAFAF8 20px)}
.qb-card.is-locked .cs-btn{pointer-events:auto}
@media (max-width:600px){.qb-access{flex-direction:column;align-items:flex-start}}