:root{
  --bg:#0b1020;
  --panel:#111a33;
  --panel2:#0f1730;
  --text:#e8ecff;
  --muted:#b7c0ff;
  --line:rgba(255,255,255,.12);
  --ok:#2ee59d;
  --ng:#ff5c7a;

  --blue:#2b7bff;
  --yellow:#ffcc00;
  --red:#ff4d4d;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Noto Sans JP",
    "Hiragino Kaku Gothic ProN", "Meiryo", Arial, sans-serif;
  background:
    radial-gradient(1000px 600px at 20% 10%, rgba(43,123,255,.18), transparent 55%),
    radial-gradient(900px 700px at 80% 20%, rgba(255,204,0,.12), transparent 55%),
    radial-gradient(900px 700px at 60% 90%, rgba(255,77,77,.10), transparent 55%),
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px),
    var(--bg);
  background-size: auto, auto, auto, 48px 48px, 48px 48px, auto;
  background-attachment: fixed;
  color:var(--text);
  line-height:1.6;
}
header{
  max-width: 980px;
  margin: 32px auto 16px;
  padding: 0 16px;
}
h1{
  margin:0 0 8px;
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing:.2px;
}
.sub{
  margin:0;
  color:var(--muted);
  font-size:14px;
}
main{
  max-width:980px;
  margin: 0 auto 48px;
  padding: 0 16px;
  display:grid;
  gap:16px;
}
.section{
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow:hidden;
}
.section__head{
  display:flex;
  gap:10px;
  align-items:center;
  padding: 14px 16px;
  background: rgba(0,0,0,.22);
  border-bottom: 1px solid var(--line);
}
.pill{
  font-size:12px;
  padding:4px 10px;
  border-radius:999px;
  border:1px solid var(--line);
  background-size: auto, auto, auto, 48px 48px, 48px 48px, auto;
  background-attachment: fixed;
  color:var(--text);
  background: rgba(255,255,255,.06);
  white-space:nowrap;
}
.pill.blue{ border-color: rgba(43,123,255,.45); box-shadow: 0 0 0 3px rgba(43,123,255,.10) inset;}
.pill.yellow{ border-color: rgba(255,204,0,.45); box-shadow: 0 0 0 3px rgba(255,204,0,.10) inset;}
.pill.red{ border-color: rgba(255,77,77,.45); box-shadow: 0 0 0 3px rgba(255,77,77,.10) inset;}

.section__body{
  padding: 14px 16px 16px;
  display:grid;
  gap:14px;
}
.qcard{
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
}
.qtitle{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:10px;
  margin-bottom:10px;
}
.qtitle h3{
  margin:0;
  font-size: 16px;
}

.qmeta{
  display:flex;
  gap:8px;
  align-items:center;
}
.revealBtn{
  border: 1px solid rgba(255,92,122,.45);
  background: rgba(255,92,122,.10);
  color: var(--text);
  padding: 6px 10px;
  border-radius: 999px;
  cursor:pointer;
  font-weight:700;
  font-size:12px;
  line-height:1;
}
.revealBtn:hover{
  background: rgba(255,92,122,.16);
}
.statusRow{
  margin-top: 10px;
  display:none;
}

.statusRow__inner{
  display:flex;
  gap:10px;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
}

.badge{
  font-size:12px;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: rgba(255,255,255,.04);
  white-space:nowrap;
}
.code{
  margin: 10px 0 12px;
  background: var(--panel2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  overflow:auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  color: #eaf0ff;
}
.options{
  display:grid;
  gap:8px;
  margin-top: 6px;
}
label.opt{
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding: 10px 10px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.03);
  cursor:pointer;
  transition: transform .06s ease, border-color .15s ease, background .15s ease;
}
label.opt:hover{
  transform: translateY(-1px);
  border-color: rgba(255,255,255,.20);
  background: rgba(255,255,255,.05);
}
input[type="radio"], input[type="checkbox"]{
  margin-top: 2px;
  transform: translateY(1px);
}
.actions{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  margin-top: 8px;
  padding: 14px 16px;
  background: rgba(0,0,0,.22);
  border: 1px solid var(--line);
  border-radius: 18px;
}
.btns{display:flex; gap:10px; flex-wrap:wrap;}
button{
  border: 1px solid var(--line);
  background: rgba(255,255,255,.06);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 12px;
  cursor:pointer;
  font-weight:600;
}
button.primary{
  border-color: rgba(43,123,255,.45);
  box-shadow: 0 0 0 3px rgba(43,123,255,.10) inset;
}
button:disabled{
  opacity:.55;
  cursor:not-allowed;
}
.result{
  display:none;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--text);
}
.feedback{
  margin-top: 10px;
  border-top: 1px dashed rgba(255,255,255,.16);
  padding-top: 10px;
  display:none;
  gap: 6px;
}
.feedback p{
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}
.mark{
  font-weight:800;
  padding: 2px 10px;
  border-radius: 999px;
  display:inline-block;
  border:1px solid var(--line);
  background: rgba(255,255,255,.04);
  margin-right: 8px;
}
.mark.ok{ color: var(--ok); border-color: rgba(46,229,157,.35); box-shadow: 0 0 0 3px rgba(46,229,157,.10) inset;}
.mark.ng{ color: var(--ng); border-color: rgba(255,92,122,.35); box-shadow: 0 0 0 3px rgba(255,92,122,.10) inset;}
.correctAnswer{
  color: var(--text);
  font-size:14px;
}
.tiny{
  color: var(--muted);
  font-size: 12px;
}
footer{
  max-width:980px;
  margin: 0 auto 40px;
  padding: 0 16px;
  color: var(--muted);
  font-size: 12px;
}

#pptLink {
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
}
#pptLink:hover {
  background: rgba(255, 255, 255, 0.1);
}


/* ===== FUN FX (micro interactions) ===== */

/* checked option highlight (Chrome supports :has) */
label.opt:has(input:checked){
  border-color: rgba(43,123,255,.55);
  background: rgba(43,123,255,.10);
  box-shadow: 0 0 0 3px rgba(43,123,255,.10) inset;
  transform: translateY(-1px);
}

/* quick tap animation when you select an option */
.opt--tap{
  animation: optTap .24s ease;
}
@keyframes optTap{
  0%{ transform: translateY(-1px) scale(1); }
  60%{ transform: translateY(-1px) scale(1.02); }
  100%{ transform: translateY(-1px) scale(1); }
}

/* question card state */
.qcard{
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}
.qcard--ok{
  border-color: rgba(46,229,157,.35);
  box-shadow: 0 0 0 3px rgba(46,229,157,.10) inset, 0 16px 50px rgba(0,0,0,.32);
}
.qcard--ng{
  border-color: rgba(255,92,122,.35);
  box-shadow: 0 0 0 3px rgba(255,92,122,.10) inset, 0 16px 50px rgba(0,0,0,.32);
}

/* pulse / shake on grading */
.anim-pop{ animation: pop .45s cubic-bezier(.2,.8,.2,1); }
@keyframes pop{
  0%{ transform: scale(.985); }
  65%{ transform: scale(1.01); }
  100%{ transform: scale(1); }
}
.anim-shake{ animation: shake .45s ease; }
@keyframes shake{
  0%{ transform: translateX(0); }
  20%{ transform: translateX(-6px); }
  40%{ transform: translateX(6px); }
  60%{ transform: translateX(-4px); }
  80%{ transform: translateX(4px); }
  100%{ transform: translateX(0); }
}

/* status row fade-in */
.statusRow{
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity .20s ease, transform .20s ease;
}
.statusRow.statusRow--show{
  opacity: 1;
  transform: translateY(0);
}

/* feedback slide-in (only when revealed) */
.feedback{
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity .18s ease, transform .18s ease;
}
.feedback.feedback--open{
  opacity: 1;
  transform: translateY(0);
}

/* result pop */
.result--pop{
  animation: resultPop .6s cubic-bezier(.2,.8,.2,1);
}
@keyframes resultPop{
  0%{ transform: translateY(6px) scale(.98); opacity: .75; }
  60%{ transform: translateY(0) scale(1.01); opacity: 1; }
  100%{ transform: translateY(0) scale(1); }
}

/* shiny mark when correct */
.mark.mark--shine{
  position: relative;
  overflow: hidden;
}
.mark.mark--shine::after{
  content:"";
  position:absolute;
  top:-60%;
  left:-40%;
  width: 45%;
  height: 220%;
  transform: rotate(20deg);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.65), transparent);
  animation: shine 1s ease;
}
@keyframes shine{
  0%{ left:-60%; opacity: 0; }
  20%{ opacity: 1; }
  100%{ left: 140%; opacity: 0; }
}

/* reveal button wiggle hint */
.anim-wiggle{
  animation: wiggle .9s ease;
}
@keyframes wiggle{
  0%{ transform: rotate(0deg); }
  18%{ transform: rotate(-6deg); }
  36%{ transform: rotate(6deg); }
  54%{ transform: rotate(-4deg); }
  72%{ transform: rotate(4deg); }
  100%{ transform: rotate(0deg); }
}

/* confetti layer */
#fxLayer{
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 9999;
}
.confetti{
  position: absolute;
  border-radius: 2px;
  will-change: transform, opacity;
  filter: drop-shadow(0 0 6px rgba(255,255,255,.20));
}

/* reduce motion */
@media (prefers-reduced-motion: reduce){
  .opt--tap,
  .anim-pop,
  .anim-shake,
  .result--pop,
  .anim-wiggle{
    animation: none !important;
  }
  .statusRow,
  .feedback{
    transition: none !important;
  }
}

/* ===== EXTRA FX (more fun) ===== */

/* add NA color token (override safely) */
:root{ --na:#ffcc00; }

/* keep content above background canvas / glows */
body{ position: relative; }
header, main, footer{ position: relative; z-index: 1; }

#bgCanvas{
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .22;
  filter: blur(.1px);
}

/* optional floating glow layer */
body::before{
  content:"";
  position: fixed;
  inset: -40%;
  z-index: 0;
  pointer-events:none;
  background:
    radial-gradient(800px 500px at 30% 30%, rgba(46,229,157,.10), transparent 60%),
    radial-gradient(900px 600px at 70% 35%, rgba(43,123,255,.10), transparent 62%),
    radial-gradient(900px 700px at 50% 80%, rgba(255,92,122,.08), transparent 60%);
  filter: blur(18px);
  animation: glowFloat 14s ease-in-out infinite;
}
@keyframes glowFloat{
  0%{ transform: translate3d(-1%, -2%, 0) scale(1); }
  50%{ transform: translate3d(2%, 1%, 0) scale(1.03); }
  100%{ transform: translate3d(-1%, -2%, 0) scale(1); }
}

/* progress */
#progressWrap{
  position: sticky;
  top: 0;
  z-index: 999;
  margin: 0;
}

/* top dock (sticky bar) */
#progressWrap .progressDock{
  padding: 10px 16px;
  backdrop-filter: blur(12px);
  background: linear-gradient(180deg, rgba(11,16,32,.86), rgba(11,16,32,.55));
  border-bottom: 1px solid rgba(255,255,255,.10);
}

#progressWrap .progressCard{
  max-width: 980px;
  margin: 0 auto;
  border: 1px solid rgba(43,123,255,.20);
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border-radius: 18px;
  padding: 12px 14px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 26px rgba(0,0,0,.35), 0 0 24px rgba(43,123,255,.10);
  isolation: isolate;
}

/* scanning highlight */
#progressWrap .progressCard::after{
  content:"";
  position:absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(43,123,255,.20) 45%, rgba(46,229,157,.16) 55%, transparent 100%);
  transform: translateX(-60%);
  animation: progressScan 3.2s linear infinite;
  opacity: .55;
  pointer-events:none;
  mix-blend-mode: screen;
}
@keyframes progressScan{
  0%{ transform: translateX(-70%); }
  100%{ transform: translateX(70%); }
}

.progressTop{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:8px;
}
.progressTitle{
  font-weight:900;
  letter-spacing:.3px;
  text-transform: uppercase;
  color: rgba(230,240,255,.95);
}
.progressText{
  color: rgba(183,192,255,.92);
  font-size: 12px;
}
.progressBar{
  height: 10px;
  border-radius: 999px;
  background: rgba(255,255,255,.08);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.10);
}
.progressFill{
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(43,123,255,.95), rgba(46,229,157,.95));
  box-shadow: 0 0 18px rgba(43,123,255,.18);
  transition: width .22s ease;
}

/* toast */
#toastWrap{
  position: fixed;
  left: 12px;
  bottom: 12px;
  z-index: 9998;
  display:grid;
  gap:8px;
  pointer-events: none;
}
.toast{
  pointer-events:none;
  max-width: min(520px, calc(100vw - 24px));
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(15,23,48,.76);
  color: var(--text);
  box-shadow: 0 16px 50px rgba(0,0,0,.35);
  opacity: 0;
  transform: translateY(6px);
}
.toast--in{ opacity: 1; transform: translateY(0); transition: opacity .18s ease, transform .18s ease; }
.toast--out{ opacity: 0; transform: translateY(8px); transition: opacity .30s ease, transform .30s ease; }
.toast--ok{ border-color: rgba(46,229,157,.35); }
.toast--warn{ border-color: rgba(255,204,0,.35); }
.toast--info{ border-color: rgba(43,123,255,.35); }

/* sound toggle button */
button.ghost{
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.03);
  color: var(--muted);
}
button.ghost:hover{ background: rgba(255,255,255,.06); color: var(--text); }

/* ripple effect */
button, a#pptLink{ position: relative; overflow: hidden; }
.ripple{
  position:absolute;
  width: 14px;
  height: 14px;
  border-radius: 999px;
  transform: translate(-50%,-50%) scale(1);
  background: rgba(255,255,255,.28);
  animation: ripple .52s ease forwards;
  pointer-events: none;
}
@keyframes ripple{
  0%{ opacity:.9; transform: translate(-50%,-50%) scale(1); }
  100%{ opacity:0; transform: translate(-50%,-50%) scale(18); }
}

/* spark particles */
.spark{
  position:absolute;
  border-radius: 999px;
  background: rgba(255,255,255,.92);
  filter: drop-shadow(0 0 10px rgba(255,255,255,.35));
  will-change: transform, opacity;
}

/* mark: NA (unanswered) */
.mark.na{
  color: var(--na);
  border-color: rgba(255,204,0,.38);
  box-shadow: 0 0 0 3px rgba(255,204,0,.10) inset;
}

/* question card NA */
.qcard--na{
  border-color: rgba(255,204,0,.35);
  box-shadow: 0 0 0 3px rgba(255,204,0,.10) inset, 0 16px 50px rgba(0,0,0,.32);
}

/* result extra line */
.scoreLine{ font-weight:800; }
.scoreSub{
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}
.scoreSub--perfect{ color: var(--ok); }
.scoreSub--ok{ color: var(--blue); }
.scoreSub--ng{ color: var(--ng); }

@media (prefers-reduced-motion: reduce){
  body::before{ animation: none !important; }
  .progressFill{ transition: none !important; }
  .ripple{ animation: none !important; opacity: 0 !important; }
}

/* ensure content above background canvas */
header, main, footer{ position: relative; z-index: 1; }

/* tech heading */
@supports (-webkit-background-clip: text) {
  h1{
    background: linear-gradient(90deg, rgba(43,123,255,1), rgba(46,229,157,1), rgba(255,204,0,1));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 18px rgba(43,123,255,.18);
  }
}


/* ===== Loading Overlay (Tech) ===== */
body.is-loading{
  overflow: hidden;
}

.loadingOverlay{
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 420ms ease, transform 420ms ease;
  transform: translateY(-6px);
  background:
    radial-gradient(900px 520px at 20% 20%, rgba(90,180,255,.18), transparent 55%),
    radial-gradient(700px 520px at 80% 30%, rgba(160,90,255,.14), transparent 55%),
    radial-gradient(900px 700px at 50% 80%, rgba(80,255,220,.10), transparent 60%),
    rgba(7, 10, 18, .78);
  backdrop-filter: blur(10px);
}

.loadingOverlay--in{
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.loadingOverlay--out{
  opacity: 0;
  pointer-events: none;
  transform: translateY(6px);
}

.loadingPanel{
  width: min(460px, 100%);
  border-radius: 18px;
  padding: 18px 18px 16px;
  background:
    linear-gradient(180deg, rgba(18, 28, 56, .86), rgba(10, 16, 34, .82));
  border: 1px solid rgba(120, 170, 255, .25);
  box-shadow:
    0 18px 70px rgba(0,0,0,.55),
    0 0 0 1px rgba(120,170,255,.10) inset,
    0 0 30px rgba(120,220,255,.15);
  display: grid;
  gap: 10px;
  justify-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.loadingPanel::before{
  content: "";
  position: absolute;
  inset: -2px;
  background:
    radial-gradient(380px 160px at 30% 0%, rgba(120,220,255,.18), transparent 60%),
    radial-gradient(380px 160px at 70% 100%, rgba(180,120,255,.12), transparent 60%);
  filter: blur(0px);
  pointer-events: none;
}

.loadingSpinner{
  width: 56px;
  height: 56px;
  border-radius: 999px;
  border: 2px solid rgba(120, 170, 255, .22);
  border-top-color: rgba(160, 240, 255, .95);
  box-shadow: 0 0 24px rgba(120, 220, 255, .25);
  animation: techSpin 900ms linear infinite;
  position: relative;
  z-index: 1;
}

.loadingText{
  font-weight: 800;
  letter-spacing: .06em;
  font-size: 1.05rem;
  color: rgba(235, 246, 255, .94);
  text-shadow: 0 0 18px rgba(120,220,255,.18);
  position: relative;
  z-index: 1;
}

.loadingSub{
  font-size: .86rem;
  color: rgba(235, 246, 255, .70);
  letter-spacing: .08em;
  position: relative;
  z-index: 1;
}

.loadingBar{
  width: min(320px, 92%);
  height: 10px;
  border-radius: 999px;
  background: rgba(120, 170, 255, .12);
  border: 1px solid rgba(120, 170, 255, .20);
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.loadingBarFill{
  height: 100%;
  width: 40%;
  border-radius: 999px;
  background:
    linear-gradient(90deg, rgba(120,220,255,.0), rgba(120,220,255,.85), rgba(170,120,255,.45), rgba(120,220,255,.0));
  filter: drop-shadow(0 0 8px rgba(120,220,255,.28));
  animation: techLoad 1100ms ease-in-out infinite;
}

@keyframes techSpin{
  to{ transform: rotate(360deg); }
}
@keyframes techLoad{
  0%{ transform: translateX(-60%) scaleX(.85); opacity: .75; }
  50%{ transform: translateX(60%) scaleX(1.05); opacity: 1; }
  100%{ transform: translateX(160%) scaleX(.85); opacity: .75; }
}

@media (prefers-reduced-motion: reduce){
  .loadingSpinner,
  .loadingBarFill{
    animation: none !important;
  }
  .loadingOverlay{
    transition: none !important;
    transform: none !important;
  }
}



/* ===== View switch (SPA) ===== */
.view{max-width: 980px; margin: 0 auto; padding: 18px 16px;}
.view--hidden{display:none !important;}

/* ===== Home view (tech) ===== */
.homeGrid{
  display:grid;
  grid-template-columns: 1.35fr .85fr;
  gap: 16px;
}
@media (max-width: 920px){
  .homeGrid{grid-template-columns:1fr;}
}
.homeCard{
  border: 1px solid rgba(43,123,255,.18);
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border-radius: 18px;
  padding: 18px 18px;
  box-shadow: 0 14px 34px rgba(0,0,0,.35), 0 0 22px rgba(43,123,255,.08);
  position:relative;
  overflow:hidden;
}
.homeCard::before{
  content:"";
  position:absolute; inset:-1px;
  background: radial-gradient(700px 220px at 20% 0%, rgba(43,123,255,.22), transparent 60%),
              radial-gradient(700px 260px at 85% 10%, rgba(255,204,0,.12), transparent 60%);
  opacity:.8;
  pointer-events:none;
}
.homeCard > *{position:relative; z-index:1;}
.homeCard h2{margin: 8px 0 6px; font-size: 26px;}
.homeCard h3{margin: 10px 0 8px;}
.homeBadge{
  display:inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(43,123,255,.35);
  background: rgba(43,123,255,.10);
  letter-spacing: .12em;
  font-weight: 800;
  font-size: 12px;
}
.homeRow{display:flex; gap: 12px; align-items:center; margin: 12px 0;}
.fileBtn{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  border: 1px dashed rgba(255,255,255,.26);
  background: rgba(255,255,255,.05);
  padding: 10px 12px;
  border-radius: 12px;
  cursor:pointer;
  user-select:none;
}
.fileBtn input{display:none;}
.fileName{color: var(--muted); font-size: 13px; overflow:hidden; text-overflow: ellipsis; white-space: nowrap;}
.homeBtns{margin-top: 12px;}
.homeDetails{margin-top: 14px;}
.formatExample{
  margin: 10px 0 0;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.18);
  overflow:auto;
  font-size: 13px;
  line-height: 1.55;
}
.featureList{margin: 8px 0 0; padding-left: 18px; color: var(--text);}
.featureList li{margin: 6px 0;}
.small{font-size: 12px;}
.muted{color: var(--muted);}

/* Make quiz view padding align with progress dock */
.view--quiz{padding-top: 10px;}


/* ===== Import debug modal ===== */
.importDebug{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.65);
  backdrop-filter: blur(6px);
  z-index: 1300;
  display:flex;
  align-items:center;
  justify-content:center;
  padding: 16px;
}
.importDebug__panel{
  width: min(920px, 100%);
  max-height: min(80vh, 760px);
  overflow:hidden;
  border-radius: 18px;
  border: 1px solid rgba(43,123,255,.22);
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  box-shadow: 0 18px 50px rgba(0,0,0,.45), 0 0 26px rgba(43,123,255,.10);
}
.importDebug__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.importDebug__title{font-weight: 800; letter-spacing:.06em;}
.importDebug__close{
  width: 36px; height: 36px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.06);
}
.importDebug__body{padding: 12px 14px;}
.importDebug__ta{
  width: 100%;
  height: 42vh;
  min-height: 220px;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.22);
  color: var(--text);
  resize: vertical;
  outline: none;
  line-height: 1.55;
}
.importDebug__tips{margin-top: 10px; color: var(--muted);}
.importDebug__foot{
  display:flex;
  gap: 10px;
  justify-content:flex-end;
  padding: 12px 14px;
  border-top: 1px solid rgba(255,255,255,.10);
}


/* ===== Text answer (記述式) ===== */
.textWrap{margin-top: 10px;}
.textAnswer{
  width: 100%;
  min-height: 74px;
  resize: vertical;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.22);
  color: var(--text);
  padding: 12px 12px;
  outline: none;
  box-shadow: 0 0 0 0 rgba(43,123,255,.0);
  transition: box-shadow .18s ease, border-color .18s ease;
}
.textAnswer:focus{
  border-color: rgba(43,123,255,.45);
  box-shadow: 0 0 0 4px rgba(43,123,255,.14);
}
.badge--text{
  border-color: rgba(255,255,255,.18);
  background: rgba(255,255,255,.06);
}

/* ===== Ungraded (未採点) ===== */
.mark.ud{
  color: #9ad8ff;
  border-color: rgba(154,216,255,.35);
  box-shadow: 0 0 0 3px rgba(154,216,255,.10) inset;
}
.chip.ud{
  border-color: rgba(154,216,255,.30);
  color: #9ad8ff;
  background: rgba(154,216,255,.08);
}
.qcard--ud{
  border-color: rgba(154,216,255,.22);
  box-shadow: 0 0 0 3px rgba(154,216,255,.06) inset;
}

/* ===== Score warning ===== */
.scoreSub--warn{ color: var(--na); }

/* ===== Debug modal ===== */
.dbgModal{
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0,0,0,.55);
  display: grid;
  place-items: center;
  padding: 16px;
}
.dbgPanel{
  width: min(980px, 100%);
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,.12);
  background: linear-gradient(180deg, rgba(12,18,30,.96), rgba(8,10,18,.96));
  box-shadow: 0 26px 70px rgba(0,0,0,.55);
  overflow: hidden;
}
.dbgHead{
  display:flex;
  align-items:center;
  justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.dbgTitle{font-weight: 900; letter-spacing: .06em;}
.dbgClose{
  width: 38px; height: 38px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.06);
  color: var(--text);
}
.dbgBody{padding: 12px 14px 14px;}
.dbgTA{
  width: 100%;
  min-height: 260px;
  resize: vertical;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.22);
  color: var(--text);
  padding: 12px 12px;
  outline: none;
  margin-top: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 12px;
  line-height: 1.55;
}
.dbgBtns{display:flex; gap: 10px; justify-content:flex-end; margin-top: 10px;}
.dbgCopy,.dbgOk{
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.06);
  color: var(--text);
  padding: 10px 14px;
}