/* ─────────────────────────────────────
   DESIGN TOKENS
───────────────────────────────────── */
:root {
  --bg:       #070b14;
  --bg2:      #09101d;
  --surf:     #0c1526;
  --surf2:    #101e30;
  --surf3:    #152338;
  --border:   #1a2c44;
  --border2:  #1f3550;
  --border3:  #264160;

  --accent:   #e8602e;
  --accent-d: #c04d22;
  --accent-g: rgba(232,96,46,.12);
  --accent-gs:rgba(232,96,46,.06);
  --teal:     #1fb5cc;
  --teal-g:   rgba(31,181,204,.10);
  --gold:     #e5b64a;
  --gold-g:   rgba(229,182,74,.10);

  --ok:       #1fa86e;
  --ok-g:     rgba(31,168,110,.10);
  --err:      #d94040;
  --err-g:    rgba(217,64,64,.10);
  --warn:     #e09830;

  --t1: #d8e8f8;
  --t2: #7f9dbb; /* v27: 由 #5a7da0 提升，卡片底對比 3.9→6.0（WCAG AA） */
  --t3: #6f8db0; /* v27: 由 #334f6a 提升，對比 2.3→5.7 */
  --t4: #1e3248;

  --r:  13px;
  --r2: 16px;
  --r3: 20px;

  --shadow-sm: 0 2px 12px rgba(0,0,0,.35);
  --shadow:    0 6px 28px rgba(0,0,0,.50);
  --shadow-lg: 0 14px 50px rgba(0,0,0,.60);

  --ease: cubic-bezier(.4,0,.2,1);
  --trans: all .22s var(--ease);
}

*, *::before, *::after {
  margin: 0; padding: 0; box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Noto Sans TC', sans-serif;
  background: var(--bg);
  color: var(--t1);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ─── AMBIENT BACKGROUND ─── */
body::before {
  content: '';
  position: fixed; inset: 0;
  background:
    radial-gradient(ellipse 55% 30% at 8% 4%,  rgba(232,96,46,.055) 0, transparent 65%),
    radial-gradient(ellipse 40% 28% at 92% 88%, rgba(31,181,204,.045) 0, transparent 65%),
    radial-gradient(ellipse 70% 50% at 50% 115%,rgba(21,50,90,.30) 0, transparent 60%);
  pointer-events: none; z-index: 0;
}

/* ─── NOISE TEXTURE OVERLAY ─── */
body::after {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 0; opacity: .4;
}

/* ─────────────────────────────────────
   HEADER
───────────────────────────────────── */
.app-header {
  position: sticky; top: 0; z-index: 100;
  height: 60px;
  background: rgba(7,11,20,.96);
  backdrop-filter: blur(28px) saturate(160%);
  -webkit-backdrop-filter: blur(28px) saturate(160%);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 18px;
  box-shadow: 0 1px 0 rgba(255,255,255,.035), var(--shadow-sm);
}

.h-logo { display: flex; align-items: center; gap: 11px; }
.h-logo-icon {
  width: 36px; height: 36px; border-radius: 9px; flex-shrink: 0;
  background: linear-gradient(145deg, var(--accent) 0%, var(--accent-d) 60%, #a0400e 100%);
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; box-shadow: 0 2px 12px rgba(232,96,46,.35), inset 0 1px 0 rgba(255,255,255,.12);
}
.h-logo-text { font-weight: 700; font-size: 13px; line-height: 1.2; letter-spacing: .2px; }
.h-logo-text .brand-main { display: block; color: var(--t1); font-weight: 700; }
.h-logo-text .brand-copy {
  display: block; font-size: 9px; color: var(--accent);
  font-weight: 600; letter-spacing: 1.8px; margin-top: 2px; opacity: .85;
  text-transform: uppercase;
}

.lang-bar {
  display: flex; gap: 2px;
  background: var(--surf); padding: 3px; border-radius: 10px;
  border: 1px solid var(--border);
  box-shadow: inset 0 1px 3px rgba(0,0,0,.25);
}
.lang-btn {
  padding: 4px 9px; border: none; background: transparent; color: var(--t2);
  font-size: 10px; font-weight: 700; border-radius: 7px; cursor: pointer;
  transition: var(--trans); font-family: 'Noto Sans TC', sans-serif;
  letter-spacing: .3px; white-space: nowrap; line-height: 1.3;
}
.lang-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-d));
  color: #fff; box-shadow: 0 1px 6px rgba(232,96,46,.45);
}
.lang-btn:not(.active):hover { background: var(--surf2); color: var(--t1); }
.lang-btn .lang-zh { display: block; font-size: 8px; opacity: .55; letter-spacing: .2px; margin-top: 1px; font-weight: 400; }

.lang-select-wrap {
  display: none;
  align-items: center;
  gap: 6px;
  color: var(--t2);
  font-size: 11px;
  font-weight: 700;
}
.lang-select {
  appearance: none;
  border: 1px solid var(--border2);
  border-radius: 9px;
  background: var(--surf2);
  color: var(--t1);
  padding: 7px 28px 7px 10px;
  font-family: 'Noto Sans TC', sans-serif;
  font-size: 12px;
  font-weight: 800;
  background-image: linear-gradient(45deg, transparent 50%, var(--accent) 50%), linear-gradient(135deg, var(--accent) 50%, transparent 50%);
  background-position: calc(100% - 14px) 50%, calc(100% - 9px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}


/* ─────────────────────────────────────
   LAYOUT
───────────────────────────────────── */
.main {
  position: relative; z-index: 1;
  max-width: 860px; margin: 0 auto;
  padding: 24px 16px 56px;
}

/* ─── SCREEN TRANSITIONS ─── */
.screen { display: none; }
.screen.active { display: block; animation: screenIn .3s var(--ease) both; }
@keyframes screenIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─────────────────────────────────────
   FOOTER
───────────────────────────────────── */
.app-footer {
  position: relative; z-index: 1;
  text-align: center; padding: 24px 16px 36px;
  border-top: 1px solid var(--border); margin-top: 16px;
}
.footer-brand { font-size: 10px; font-weight: 800; color: var(--accent); letter-spacing: 2.5px; margin-bottom: 5px; text-transform: uppercase; }
.footer-copy { font-size: 10px; color: var(--t3); letter-spacing: .4px; }
.footer-disclaimer {
  margin-top: 8px;
  font-size: 10px; color: var(--t3);
  letter-spacing: .3px; line-height: 1.6;
  border-top: 1px solid var(--border);
  padding-top: 8px; max-width: 440px;
  margin-left: auto; margin-right: auto;
}

/* ─────────────────────────────────────
   HOME SCREEN
───────────────────────────────────── */
.hero {
  text-align: center;
  padding: 36px 0 28px;
}
.hero-pill {
  display: inline-flex; align-items: center; gap: 7px;
  background: rgba(232,96,46,.08);
  border: 1px solid rgba(232,96,46,.22);
  color: var(--accent); padding: 5px 15px; border-radius: 99px;
  font-size: 10.5px; font-weight: 700; letter-spacing: 1.8px;
  margin-bottom: 20px; text-transform: uppercase;
}
.hero-pill .pill-dot {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent); display: inline-block;
  box-shadow: 0 0 6px var(--accent);
  animation: pulse-dot 2s ease infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(.7); }
}

.hero h1 {
  font-family: 'Noto Serif TC', serif;
  font-size: clamp(26px, 5.5vw, 46px);
  font-weight: 900; line-height: 1.12;
  margin-bottom: 14px; letter-spacing: -0.3px;
  background: linear-gradient(145deg, #ffffff 15%, #c8daf5 45%, var(--accent) 80%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-sub {
  font-size: 13px; color: var(--t2); line-height: 1.75;
  max-width: 420px; margin: 0 auto 30px; letter-spacing: .2px;
}

/* ─── THREE-STEP HOME FLOW ─── */
.home-step {
  background: rgba(13,22,36,.72);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 16px;
  margin-bottom: 14px;
}
.step-head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}
.step-num {
  flex: 0 0 auto;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(232,96,46,.12);
  color: var(--accent);
  border: 1px solid rgba(232,96,46,.24);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .6px;
}
.step-copy {
  font-size: 12px;
  color: var(--t2);
  line-height: 1.6;
  margin-top: -4px;
}
.home-step .sec-label { margin-bottom: 5px; }
.home-step .job-grid,
.home-step .mode-grid { margin-bottom: 0; }
.home-step-start { padding-bottom: 18px; }

/* ─── STATS ROW ─── */
.stat-row {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 8px; margin-bottom: 28px;
}
.stat-box {
  background: var(--surf);
  border: 1px solid var(--border);
  border-radius: 12px; padding: 14px 8px; text-align: center;
  transition: var(--trans); position: relative; overflow: hidden;
}
.stat-box::before {
  content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 60%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(232,96,46,.4), transparent);
}
.stat-n {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 24px; font-weight: 700;
  color: var(--accent); line-height: 1;
  letter-spacing: -0.5px;
}
.stat-l { font-size: 10px; color: var(--t2); margin-top: 5px; letter-spacing: .4px; }

/* ─── SECTION LABEL ─── */
.sec-label {
  font-size: 10px; font-weight: 700; color: var(--t2);
  letter-spacing: 2.2px; text-transform: uppercase;
  margin-bottom: 10px; padding-left: 2px;
  display: flex; align-items: center; gap: 8px;
}
.sec-label::before {
  content: ''; width: 18px; height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  border-radius: 2px; flex-shrink: 0;
}

/* ─── JOB CARDS ─── */
.job-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 22px; }
.job-card {
  background: var(--surf); border: 1.5px solid var(--border);
  border-radius: var(--r2); padding: 20px 16px 18px;
  cursor: pointer; transition: var(--trans); position: relative; overflow: hidden;
}
.job-card::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(232,96,46,.06), transparent 60%);
  opacity: 0; transition: opacity .2s;
}
.job-card:hover { border-color: rgba(232,96,46,.4); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.job-card:hover::before { opacity: 1; }
.job-card.selected {
  border-color: rgba(232,96,46,.7);
  background: var(--surf2);
  box-shadow: 0 0 0 3px rgba(232,96,46,.12), var(--shadow-sm);
}
.job-card.selected::before { opacity: 1; }

.jc-check {
  position: absolute; top: 10px; right: 10px;
  width: 22px; height: 22px;
  background: var(--accent); border-radius: 50%; display: none;
  align-items: center; justify-content: center;
  font-size: 11px; color: #fff;
  box-shadow: 0 2px 8px rgba(232,96,46,.4);
}
.job-card.selected .jc-check { display: flex; }
.jc-icon { font-size: 28px; margin-bottom: 10px; }
.jc-title { font-weight: 800; font-size: 15px; margin-bottom: 4px; color: var(--t1); }
.jc-sub { font-size: 11px; color: var(--t2); line-height: 1.5; }

.jc-sub { white-space: pre-line; }


/* ─── MODE CARDS ─── */
.mode-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 10px; margin-bottom: 20px; }
.mode-card {
  background: var(--surf); border: 1.5px solid var(--border);
  border-radius: var(--r2); padding: 16px 14px 14px;
  cursor: pointer; transition: var(--trans); position: relative; overflow: hidden;
}
.mode-card::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(31,181,204,.05), transparent 60%);
  opacity: 0; transition: opacity .2s;
}
.mode-card:hover { border-color: rgba(31,181,204,.4); transform: translateY(-2px); }
.mode-card:hover::before { opacity: 1; }
.mode-card.selected {
  border-color: rgba(31,181,204,.6);
  background: var(--surf2);
  box-shadow: 0 0 0 3px rgba(31,181,204,.10), var(--shadow-sm);
}
.mode-card.selected::before { opacity: 1; }

.mc-check {
  position: absolute; top: 10px; right: 10px;
  width: 22px; height: 22px;
  background: var(--teal); border-radius: 50%; display: none;
  align-items: center; justify-content: center;
  font-size: 11px; color: var(--bg);
}
.mode-card.selected .mc-check { display: flex; }
.mc-icon { font-size: 22px; margin-bottom: 8px; }
.mc-title { font-weight: 800; font-size: 13.5px; margin-bottom: 3px; color: var(--t1); }
.mc-sub { font-size: 11px; color: var(--t2); line-height: 1.4; }
.mc-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px; }
.mc-tag {
  background: rgba(31,181,204,.08); border: 1px solid rgba(31,181,204,.18);
  color: var(--teal); padding: 2px 8px; border-radius: 99px;
  font-size: 9px; font-weight: 700; letter-spacing: .5px;
}

.mode-card.recommended {
  grid-column: 1 / -1;
  border-color: rgba(229,182,74,.28);
  background: var(--surf);
}
.mode-card.recommended.selected {
  border-color: rgba(31,181,204,.65);
  background: var(--surf2);
}
.mc-recommend {
  display: inline-flex;
  margin-bottom: 8px;
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(229,182,74,.12);
  color: var(--gold);
  border: 1px solid rgba(229,182,74,.28);
  font-size: 10px;
  font-weight: 800;
}


/* ─── QB INFO ─── */
.qbinfo {
  background: var(--surf); border: 1px solid var(--border);
  border-radius: var(--r); padding: 14px 16px; margin-bottom: 18px;
}
.qbinfo-title { font-size: 10px; font-weight: 700; color: var(--t2); letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 10px; }
.qbinfo-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.qb-tag { padding: 4px 10px; border-radius: 10px; font-size: 11px; font-weight: 700; border: 1px solid; }

/* ─── START BUTTON ─── */
.start-btn {
  width: 100%; padding: 16px; border: none; border-radius: var(--r);
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-d) 100%);
  color: #fff; font-size: 15px; font-weight: 800;
  font-family: 'Noto Sans TC', sans-serif;
  cursor: pointer; transition: var(--trans); letter-spacing: 2.5px;
  box-shadow: 0 5px 22px rgba(232,96,46,.35), inset 0 1px 0 rgba(255,255,255,.12);
  display: flex; align-items: center; justify-content: center; gap: 9px;
  position: relative; overflow: hidden;
}
.start-btn::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.08), transparent);
  opacity: 0; transition: opacity .2s;
}
.start-btn:hover:not(:disabled) {
  transform: translateY(-3px);
  box-shadow: 0 10px 32px rgba(232,96,46,.48), inset 0 1px 0 rgba(255,255,255,.15);
}
.start-btn:hover:not(:disabled)::before { opacity: 1; }
.start-btn:active:not(:disabled) { transform: translateY(-1px); }
.start-btn:disabled { opacity: .3; cursor: not-allowed; transform: none; }

/* ─────────────────────────────────────
   QUIZ SCREEN
───────────────────────────────────── */

/* ─── QUIZ HEADER ─── */
.qhdr { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.qhdr-info { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.qhdr-mode {
  font-size: 9px; font-weight: 700; color: var(--accent);
  letter-spacing: 2.2px; text-transform: uppercase;
}
.qhdr-count {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 18px; font-weight: 600; color: var(--t1); letter-spacing: -0.5px;
}
.qhdr-spacer { flex: 1; padding: 0 4px; }

.timer-box {
  background: var(--surf); border: 1.5px solid var(--border);
  border-radius: 10px; padding: 7px 13px;
  font-family: 'IBM Plex Mono', monospace; font-size: 17px; font-weight: 600;
  color: var(--gold); min-width: 80px; text-align: center; flex-shrink: 0;
  box-shadow: inset 0 1px 3px rgba(0,0,0,.2);
  transition: color .3s, border-color .3s;
}
.timer-box.urgent {
  border-color: var(--err); color: var(--err);
  animation: blink-timer .7s ease infinite;
  box-shadow: 0 0 0 2px rgba(217,64,64,.1), inset 0 1px 3px rgba(0,0,0,.2);
}
@keyframes blink-timer { 0%, 100% { opacity: 1; } 50% { opacity: .55; } }

.quiz-home-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,.1);
  background: var(--surf);
  color: var(--t2);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  transition: var(--trans);
}
.quiz-home-icon:hover {
  color: var(--t1);
  border-color: var(--border3);
  background: var(--surf2);
}


/* ─── PROGRESS BAR ─── */
.prog-wrap {
  background: var(--surf2); border-radius: 99px;
  height: 4px; overflow: hidden;
  box-shadow: inset 0 1px 2px rgba(0,0,0,.3);
}
.prog-fill {
  height: 100%; border-radius: 99px;
  background: linear-gradient(90deg, var(--accent), var(--gold));
  transition: width .5s var(--ease);
  box-shadow: 0 0 8px rgba(232,96,46,.4);
}

/* ─── QUESTION CARD ─── */
.qcard {
  background: var(--surf);
  border: 1px solid var(--border);
  border-radius: var(--r3); padding: 22px 20px;
  margin-bottom: 12px; position: relative; overflow: hidden;
}
.qcard::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--teal) 60%, transparent 100%);
}
.qcard::after {
  content: ''; position: absolute; bottom: 0; right: 0;
  width: 160px; height: 160px;
  background: radial-gradient(circle, rgba(232,96,46,.04) 0, transparent 70%);
  pointer-events: none;
}

.qcat-tag {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--teal-g); border: 1px solid rgba(31,181,204,.18);
  color: var(--teal); padding: 3px 10px; border-radius: 99px;
  font-size: 10px; font-weight: 700; margin-bottom: 12px; letter-spacing: .4px;
}
.scenario-badge {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--gold-g); border: 1px solid rgba(229,182,74,.22);
  color: var(--gold); padding: 3px 10px; border-radius: 99px;
  font-size: 10px; font-weight: 700; margin-bottom: 8px; letter-spacing: .4px; margin-left: 6px;
}
.qnum {
  font-size: 10px; color: var(--t3);
  font-family: 'IBM Plex Mono', monospace; margin-bottom: 7px; letter-spacing: .5px;
}
.qtext {
  font-size: 15.5px; font-weight: 700; line-height: 1.7; color: var(--t1); margin-bottom: 4px;
  letter-spacing: .1px;
}
.qtext-sub {
  font-size: 12px; color: var(--teal); line-height: 1.65; margin-top: 6px;
  padding-top: 8px; border-top: 1px solid rgba(31,181,204,.12);
  font-style: normal; opacity: .85;
}

/* ─── SCENARIO BOX ─── */
.scenario-box {
  background: linear-gradient(135deg, rgba(229,182,74,.05), rgba(31,181,204,.03));
  border: 1px solid rgba(229,182,74,.18); border-radius: 12px;
  padding: 14px 16px; margin-bottom: 14px; font-size: 13px; line-height: 1.7;
}
.scenario-box .sb-label {
  font-size: 9px; font-weight: 800; color: var(--gold);
  letter-spacing: 2px; text-transform: uppercase;
  margin-bottom: 7px; display: flex; align-items: center; gap: 5px;
}
.scenario-box .sb-text { color: var(--t1); font-weight: 600; margin-bottom: 6px; }
.scenario-box .sb-sub {
  color: var(--teal); font-size: 12px; margin-top: 6px;
  padding-top: 6px; border-top: 1px solid rgba(229,182,74,.12);
  line-height: 1.65; opacity: .88;
}

/* ─── OPTIONS ─── */
.opts-grid { display: grid; gap: 8px; }
.opt-btn {
  background: var(--surf2); border: 1.5px solid var(--border);
  border-radius: 13px; padding: 13px 15px; cursor: pointer;
  transition: var(--trans); text-align: left; color: var(--t1);
  font-family: 'Noto Sans TC', sans-serif;
  display: grid; grid-template-columns: 36px 1fr; gap: 12px; align-items: start; width: 100%;
  position: relative; overflow: hidden;
}
.opt-btn::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(232,96,46,.05), transparent);
  opacity: 0; transition: opacity .15s;
}
.opt-btn:hover:not(:disabled) { border-color: rgba(232,96,46,.4); }
.opt-btn:hover:not(:disabled)::before { opacity: 1; }
.opt-btn:hover:not(:disabled) .opt-letter { background: rgba(232,96,46,.15); color: var(--t1); }

.opt-letter {
  width: 36px; height: 36px;
  background: var(--surf3); border-radius: 9px;
  border: 1px solid var(--border2);
  display: flex; align-items: center; justify-content: center;
  font-family: 'IBM Plex Mono', monospace; font-weight: 600; font-size: 13px;
  flex-shrink: 0; transition: var(--trans); color: var(--t2);
}
.opt-text { font-size: 15px; line-height: 1.65; padding-top: 5px; font-weight: 600; color: var(--t1); }
.opt-sub {
  font-size: 12px; color: var(--t2); margin-top: 5px; display: block;
  font-style: normal; padding-top: 5px; border-top: 1px solid rgba(255,255,255,.05);
  line-height: 1.6;
}
.opt-btn.selected { border-color: rgba(232,96,46,.65); background: var(--surf3); }
.opt-btn.selected::before { opacity: 1; }
.opt-btn.selected .opt-letter { background: var(--accent); color: #fff; border-color: transparent; box-shadow: 0 2px 8px rgba(232,96,46,.35); }

.opt-btn.correct { border-color: rgba(31,168,110,.65) !important; background: rgba(31,168,110,.06) !important; }
.opt-btn.correct::before { background: linear-gradient(135deg, rgba(31,168,110,.06), transparent) !important; opacity: 1 !important; }
.opt-btn.correct .opt-letter { background: var(--ok) !important; color: #fff !important; border-color: transparent !important; box-shadow: 0 2px 8px rgba(31,168,110,.3) !important; }

.opt-btn.wrong { border-color: rgba(217,64,64,.65) !important; background: rgba(217,64,64,.06) !important; }
.opt-btn.wrong::before { background: linear-gradient(135deg, rgba(217,64,64,.06), transparent) !important; opacity: 1 !important; }
.opt-btn.wrong .opt-letter { background: var(--err) !important; color: #fff !important; border-color: transparent !important; box-shadow: 0 2px 8px rgba(217,64,64,.3) !important; }
.opt-btn:disabled { cursor: default; }

/* ─── EXPLANATION ─── */
.expl-panel {
  background: var(--ok-g); border: 1px solid rgba(31,168,110,.22);
  border-radius: 12px; padding: 14px 16px; margin-top: 10px;
  display: none; animation: screenIn .25s var(--ease) both;
}
.expl-panel.wrong-expl { background: var(--err-g); border-color: rgba(217,64,64,.22); }
.expl-panel.open { display: block; }
.expl-title {
  font-size: 10px; font-weight: 700; color: var(--ok);
  letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 7px;
}
.expl-panel.wrong-expl .expl-title { color: var(--err); }
.expl-text { font-size: 13px; line-height: 1.7; color: var(--t2); }

.expl-panel.open {
  max-height: 220px;
  overflow: auto;
}


/* ─── QUIZ NAV ─── */
.qnav { display: flex; justify-content: space-between; gap: 10px; margin-top: 14px; }
.nav-btn {
  flex: 1; padding: 13px; border: 1.5px solid var(--border);
  background: var(--surf); color: var(--t1);
  border-radius: 12px; font-size: 13px; font-weight: 700;
  font-family: 'Noto Sans TC', sans-serif; cursor: pointer; transition: var(--trans);
  letter-spacing: .8px;
}
.nav-btn:hover:not(:disabled) { border-color: var(--border3); background: var(--surf2); }
.nav-btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-d));
  border-color: transparent; color: #fff;
  box-shadow: 0 4px 14px rgba(232,96,46,.3);
}
.nav-btn.primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232,96,46,.45);
}
.nav-btn:disabled { opacity: .35; cursor: not-allowed; transform: none !important; }

/* ─── QMAP ─── */
.qmap {
  background: var(--surf); border: 1px solid var(--border);
  border-radius: var(--r); padding: 10px 12px 12px; margin-top: 12px;
}
.qmap-toggle {
  width: 100%;
  border: none;
  background: transparent;
  padding: 2px 0 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-family: 'Noto Sans TC', sans-serif;
}
.qmap-lbl { font-size: 10px; color: var(--t2); font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; margin: 0; }
.qmap-arr { color: var(--accent); font-size: 11px; font-weight: 800; }
.qmap-grid { display: flex; flex-wrap: wrap; gap: 5px; }
.qmap.collapsed .qmap-grid,
.qmap.collapsed .qmap-actions { display: none; }
.qmap-actions {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.qmap-dot {
  width: 27px; height: 27px; border-radius: 6px;
  background: var(--surf2); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 9px; font-family: 'IBM Plex Mono', monospace; color: var(--t3);
  cursor: pointer; transition: var(--trans);
}
.qmap-dot:hover { border-color: var(--teal); color: var(--teal); }
.qmap-dot.answered { background: rgba(232,96,46,.12); border-color: rgba(232,96,46,.4); color: var(--accent); }
.qmap-dot.current { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 700; box-shadow: 0 2px 8px rgba(232,96,46,.35); }
.qmap-dot.correct-d { background: rgba(31,168,110,.15); border-color: rgba(31,168,110,.5); color: var(--ok); }
.qmap-dot.wrong-d { background: rgba(217,64,64,.15); border-color: rgba(217,64,64,.5); color: var(--err); }

/* ─────────────────────────────────────
   RESULT SCREEN
───────────────────────────────────── */
.result-hero { text-align: center; padding: 32px 0 24px; }
.result-emoji {
  font-size: 58px; display: block; margin-bottom: 18px;
  animation: float-emoji 3s ease-in-out infinite;
}
@keyframes float-emoji {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-8px) scale(1.05); }
}

.score-ring-wrap {
  width: 154px; height: 154px; margin: 0 auto 20px;
  position: relative;
}
.score-ring-wrap svg { transform: rotate(-90deg); }
.score-inner {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.score-big {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 34px; font-weight: 700; color: var(--accent); line-height: 1;
  letter-spacing: -1px;
}
.score-tot { font-size: 12px; color: var(--t2); margin-top: 3px; font-family: 'IBM Plex Mono', monospace; }
.result-title {
  font-family: 'Noto Serif TC', serif;
  font-size: 24px; font-weight: 800; margin-bottom: 8px; letter-spacing: .2px;
}
.result-msg { font-size: 13px; color: var(--t2); line-height: 1.65; margin-bottom: 24px; }

.result-conclusion-card {
  background: linear-gradient(135deg, rgba(232,96,46,.08), rgba(31,181,204,.05));
  border: 1px solid rgba(232,96,46,.22);
  border-radius: var(--r2);
  padding: 16px;
  margin-bottom: 16px;
}
.result-conclusion-title {
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 1.6px;
  margin-bottom: 8px;
}
.result-conclusion-card p {
  color: var(--t1);
  font-size: 14px;
  line-height: 1.75;
  margin: 0 0 12px;
}
.result-advice-list {
  display: grid;
  gap: 7px;
}
.result-advice-list div {
  color: var(--t2);
  font-size: 12px;
  line-height: 1.55;
  padding-left: 18px;
  position: relative;
}
.result-advice-list div::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--ok);
  font-weight: 900;
}

/* ─── RESULT STATS ─── */
.rstat-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 9px; margin-bottom: 24px; }
.rstat {
  background: var(--surf); border: 1px solid var(--border);
  border-radius: 13px; padding: 16px 10px; text-align: center;
  position: relative; overflow: hidden;
}
.rstat::before {
  content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 50%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.1), transparent);
}
.rstat-n {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 22px; font-weight: 700; margin-bottom: 5px; letter-spacing: -0.5px;
}
.rstat-l { font-size: 10px; color: var(--t2); letter-spacing: .4px; }

/* ─── CATEGORY RESULTS ─── */
.cat-result-grid { display: grid; gap: 8px; margin-bottom: 20px; }
.cat-result-item {
  background: var(--surf); border: 1px solid var(--border);
  border-radius: 12px; padding: 13px 15px;
}
.cri-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.cri-name { font-size: 13px; font-weight: 700; display: flex; align-items: center; gap: 6px; }
.cri-score { font-family: 'IBM Plex Mono', monospace; font-size: 13px; font-weight: 600; }
.cri-bar { height: 4px; background: var(--border); border-radius: 99px; overflow: hidden; }
.cri-bar-fill { height: 100%; border-radius: 99px; transition: width 1.2s var(--ease); }

/* ─── REVIEW ─── */
.review-toggle {
  background: var(--surf); border: 1px solid var(--border);
  border-radius: var(--r); padding: 13px 16px;
  display: flex; align-items: center; justify-content: space-between;
  cursor: pointer; margin-bottom: 10px; font-weight: 700;
  transition: var(--trans); font-size: 13px;
}
.review-toggle:hover { border-color: var(--border2); background: var(--surf2); }
.review-list { display: none; }
.review-list.open { display: block; }
.review-item {
  background: var(--surf); border: 1px solid var(--border);
  border-radius: 11px; padding: 12px 14px; margin-bottom: 7px;
  border-left-width: 3px;
}
.review-item.ri-c { border-left-color: var(--ok); }
.review-item.ri-w { border-left-color: var(--err); }
.ri-hd { display: flex; align-items: flex-start; gap: 9px; margin-bottom: 6px; }
.ri-badge {
  width: 20px; height: 20px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; flex-shrink: 0; margin-top: 1px;
}
.ri-badge.c { background: var(--ok); color: #fff; }
.ri-badge.w { background: var(--err); color: #fff; }
.ri-q { font-size: 12px; font-weight: 600; line-height: 1.5; }
.ri-ans { font-size: 11px; color: var(--t2); margin-top: 3px; line-height: 1.5; }
.ri-ans span { color: var(--ok); font-weight: 800; }

/* ─── ACTION ROW ─── */
.action-row { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin-top: 14px; }
.act-btn {
  padding: 13px; border-radius: 12px; font-size: 13px; font-weight: 800;
  font-family: 'Noto Sans TC', sans-serif; cursor: pointer; transition: var(--trans);
  letter-spacing: .8px; border: 1.5px solid var(--border); background: var(--surf); color: var(--t1);
}
.act-btn:hover { transform: translateY(-2px); border-color: var(--border2); background: var(--surf2); }
.act-btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-d));
  border-color: transparent; color: #fff;
  box-shadow: 0 4px 14px rgba(232,96,46,.3);
}
.act-btn.primary:hover { box-shadow: 0 8px 24px rgba(232,96,46,.45); }

.result-actions {
  grid-template-columns: 1fr;
}
.act-link-btn {
  border: none;
  background: transparent;
  color: var(--t2);
  padding: 8px;
  font-family: 'Noto Sans TC', sans-serif;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}
.act-link-btn:hover { color: var(--t1); }


/* ─── QUIZ EXTRA ACTIONS ─── */
.quiz-action-row {
  display: flex; gap: 8px; margin-top: 10px;
}
.quiz-act-btn {
  flex: 1; padding: 10px; border-radius: 10px;
  font-size: 12px; font-weight: 700; font-family: 'Noto Sans TC', sans-serif;
  cursor: pointer; transition: var(--trans); letter-spacing: .5px;
  border: 1.5px solid var(--border); background: var(--surf); color: var(--t2);
}
.quiz-act-btn:hover { border-color: var(--border3); color: var(--t1); background: var(--surf2); }
.quiz-act-btn.danger {
  border-color: rgba(217,64,64,.3); color: var(--err);
}
.quiz-act-btn.danger:hover { border-color: rgba(217,64,64,.6); background: rgba(217,64,64,.07); }

/* ─── CONFIRM MODAL ─── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 400;
  background: rgba(0,0,0,.65); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  opacity: 0; pointer-events: none; transition: opacity .2s var(--ease);
}
.modal-overlay.show { opacity: 1; pointer-events: all; }
.modal-box {
  background: var(--surf2); border: 1px solid var(--border2);
  border-radius: var(--r3); padding: 28px 24px; max-width: 340px; width: 100%;
  box-shadow: var(--shadow-lg);
  transform: translateY(16px); transition: transform .25s var(--ease);
}
.modal-overlay.show .modal-box { transform: translateY(0); }
.modal-icon { font-size: 38px; text-align: center; margin-bottom: 12px; }
.modal-title { font-size: 17px; font-weight: 800; text-align: center; margin-bottom: 8px; }
.modal-desc { font-size: 13px; color: var(--t2); text-align: center; line-height: 1.65; margin-bottom: 22px; }
.modal-stats { display: flex; gap: 8px; margin-bottom: 18px; }
.modal-stat { flex:1; background: var(--surf3); border-radius: 10px; padding: 10px; text-align: center; }
.modal-stat-n { font-family: 'IBM Plex Mono', monospace; font-size: 18px; font-weight: 700; }
.modal-stat-l { font-size: 10px; color: var(--t2); margin-top: 3px; }
.modal-btns { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.modal-btn {
  padding: 12px; border-radius: 11px; font-size: 13px; font-weight: 800;
  font-family: 'Noto Sans TC', sans-serif; cursor: pointer; transition: var(--trans);
  border: 1.5px solid var(--border); background: var(--surf); color: var(--t1);
  letter-spacing: .5px;
}
.modal-btn:hover { background: var(--surf3); border-color: var(--border3); }
.modal-btn.confirm-submit {
  background: linear-gradient(135deg, var(--accent), var(--accent-d));
  border-color: transparent; color: #fff;
  box-shadow: 0 4px 14px rgba(232,96,46,.3);
}
.modal-btn.confirm-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(232,96,46,.45); }
.modal-btn.confirm-home {
  background: linear-gradient(135deg, var(--err), #b83232);
  border-color: transparent; color: #fff;
  box-shadow: 0 4px 14px rgba(217,64,64,.3);
}
.modal-btn.confirm-home:hover { transform: translateY(-2px); }

/* ─────────────────────────────────────
   LEARN SCREEN
───────────────────────────────────── */
.learn-header {
  background: var(--surf); border: 1px solid var(--border);
  border-radius: var(--r2); padding: 16px 18px; margin-bottom: 16px;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px;
}
.learn-title {
  font-size: 15px; font-weight: 800; color: var(--t1); display: flex; align-items: center; gap: 8px;
}
.learn-prog-txt {
  font-family: 'IBM Plex Mono', monospace; font-size: 13px; color: var(--teal); font-weight: 600;
}
.learn-card {
  background: var(--surf); border: 1.5px solid var(--border);
  border-radius: var(--r3); padding: 0; margin-bottom: 14px;
  overflow: hidden; transition: var(--trans);
}
.learn-card-top {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(31,181,204,.04) 0%, transparent 60%);
  position: relative;
}
.learn-card-top::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--teal) 0%, var(--accent) 60%, transparent 100%);
}
.learn-qnum {
  font-size: 9px; font-weight: 700; color: var(--teal);
  letter-spacing: 2px; text-transform: uppercase; margin-bottom: 6px;
}
.learn-cat-tag {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--teal-g); border: 1px solid rgba(31,181,204,.18);
  color: var(--teal); padding: 3px 10px; border-radius: 99px;
  font-size: 10px; font-weight: 700; margin-bottom: 12px;
}
.learn-qtext {
  font-size: 15px; font-weight: 700; line-height: 1.7; color: var(--t1); margin-bottom: 6px;
}
.learn-qtext-sub {
  font-size: 12px; color: var(--teal); line-height: 1.6; opacity: .85;
}
.learn-opts {
  padding: 14px 16px; display: grid; gap: 8px;
}
.learn-opt {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 11px 13px; border-radius: 10px; border: 1.5px solid var(--border);
  background: var(--surf2); cursor: pointer; transition: var(--trans);
}
.learn-opt:hover:not(.revealed) { border-color: var(--border3); background: var(--surf3); }
.learn-opt.correct {
  border-color: rgba(31,168,110,.6); background: rgba(31,168,110,.08);
}
.learn-opt.wrong {
  border-color: rgba(217,64,64,.5); background: rgba(217,64,64,.07);
}
.learn-opt-letter {
  width: 24px; height: 24px; border-radius: 6px; flex-shrink: 0;
  background: var(--surf3); border: 1px solid var(--border2);
  display: flex; align-items: center; justify-content: center;
  font-family: 'IBM Plex Mono', monospace; font-size: 11px; font-weight: 700; color: var(--t2);
  transition: var(--trans);
}
.learn-opt.correct .learn-opt-letter { background: var(--ok); border-color: var(--ok); color: #fff; }
.learn-opt.wrong .learn-opt-letter { background: var(--err); border-color: var(--err); color: #fff; }
.learn-opt-body { flex: 1; }
.learn-opt-zh { font-size: 13px; font-weight: 600; color: var(--t1); line-height: 1.5; }
.learn-opt-sub { font-size: 11px; color: var(--t2); margin-top: 2px; line-height: 1.4; }

.learn-answer-panel {
  margin: 0 16px 14px; padding: 14px 16px; border-radius: 12px;
  background: var(--ok-g); border: 1.5px solid rgba(31,168,110,.35);
  display: none;
}
.learn-answer-panel.show { display: block; animation: screenIn .25s both; }
.learn-answer-panel.wrong-ans { background: var(--err-g); border-color: rgba(217,64,64,.35); }
.lap-title { font-size: 11px; font-weight: 800; color: var(--ok); letter-spacing: 1.5px; margin-bottom: 6px; }
.lap-title.wrong { color: var(--err); }
.lap-text { font-size: 13px; color: var(--t1); line-height: 1.7; }
.lap-tip {
  margin-top: 10px; padding-top: 10px; border-top: 1px solid rgba(255,255,255,.06);
  font-size: 12px; color: var(--teal); line-height: 1.6;
}

.learn-nav {
  display: flex; gap: 10px; padding: 0 16px 18px; flex-wrap: wrap;
}
.learn-nav-btn {
  flex: 1; min-width: 100px; padding: 12px; border-radius: 11px;
  font-size: 13px; font-weight: 700; font-family: 'Noto Sans TC', sans-serif;
  cursor: pointer; transition: var(--trans); letter-spacing: .6px;
  border: 1.5px solid var(--border); background: var(--surf); color: var(--t1);
}
.learn-nav-btn:hover:not(:disabled) { border-color: var(--border3); background: var(--surf2); }
.learn-nav-btn.primary {
  background: linear-gradient(135deg, var(--teal) 0%, #178fa3 100%);
  border-color: transparent; color: var(--bg);
  font-weight: 800;
  box-shadow: 0 4px 14px rgba(31,181,204,.3);
}
.learn-nav-btn.primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(31,181,204,.4); }
.learn-nav-btn:disabled { opacity: .3; cursor: not-allowed; }
.learn-nav-btn.danger {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-d) 100%);
  border-color: transparent; color: #fff;
  box-shadow: 0 4px 14px rgba(232,96,46,.3);
}

/* learn progress bar */
.learn-prog-bar {
  height: 3px; background: var(--border); border-radius: 99px;
  overflow: hidden; margin-bottom: 14px;
}
.learn-prog-fill {
  height: 100%; border-radius: 99px;
  background: linear-gradient(90deg, var(--teal), var(--accent));
  transition: width .5s var(--ease);
  box-shadow: 0 0 8px rgba(31,181,204,.4);
}

/* learn summary */
.learn-summary {
  background: var(--surf); border: 1px solid var(--border); border-radius: var(--r2);
  padding: 20px; text-align: center; margin-bottom: 16px;
}
.ls-emoji { font-size: 48px; display: block; margin-bottom: 12px; }
.ls-title { font-size: 20px; font-weight: 800; margin-bottom: 6px; }
.ls-sub { font-size: 13px; color: var(--t2); margin-bottom: 16px; line-height: 1.6; }
.ls-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 16px;
}
.ls-stat { background: var(--surf2); border-radius: 10px; padding: 12px 8px; text-align: center; }
.ls-stat-n { font-family: 'IBM Plex Mono', monospace; font-size: 20px; font-weight: 700; }
.ls-stat-l { font-size: 10px; color: var(--t2); margin-top: 3px; }

/* learn bookmark */
.learn-bookmark {
  position: absolute; top: 14px; right: 14px;
  font-size: 18px; cursor: pointer; opacity: .5; transition: var(--trans);
  background: none; border: none; padding: 4px;
}
.learn-bookmark:hover { opacity: 1; transform: scale(1.2); }
.learn-bookmark.starred { opacity: 1; filter: drop-shadow(0 0 6px #e5b64a); }

/* ─────────────────────────────────────
   MISC COMPONENTS
───────────────────────────────────── */

/* TOAST */
.toast {
  position: fixed; bottom: 24px; left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--surf2); border: 1px solid var(--border2);
  border-radius: 11px; padding: 11px 22px;
  font-size: 13px; font-weight: 700; z-index: 200;
  transition: transform .3s var(--ease); box-shadow: var(--shadow); white-space: nowrap;
  backdrop-filter: blur(12px);
}
.toast.show { transform: translateX(-50%) translateY(0); }

/* LOADER */
.loader {
  position: fixed; inset: 0; background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 16px; z-index: 300; transition: opacity .4s;
}
.loader.hidden { opacity: 0; pointer-events: none; }
.spin {
  width: 36px; height: 36px;
  border: 2.5px solid var(--surf2); border-top-color: var(--accent);
  border-radius: 50%; animation: spin .75s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loader-txt { color: var(--t2); font-size: 12px; letter-spacing: .5px; }

/* BILINGUAL BADGE */
.bilingual-badge {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--teal-g); border: 1px solid rgba(31,181,204,.18);
  color: var(--teal); padding: 3px 10px; border-radius: 8px;
  font-size: 9px; font-weight: 700; letter-spacing: 1.2px; margin-bottom: 12px;
}

/* HR */
hr.div { border: none; border-top: 1px solid var(--border); margin: 18px 0; }

/* ─────────────────────────────────────
   RESPONSIVE
───────────────────────────────────── */
@media (max-width: 480px) {
  .app-header { padding: 0 12px; gap: 10px; }
  .h-logo { min-width: 0; }
  .h-logo-text { min-width: 0; }
  .h-logo-text .brand-main { font-size: 12px; }
  .h-logo-text .brand-copy { display: none; }
  .lang-bar { display: none; }
  .lang-select-wrap { display: inline-flex; }
  .main { padding: 16px 12px 76px; }
  .hero { padding: 24px 0 20px; }
  .qtext { font-size: 15px; }
  .opt-btn {
    grid-template-columns: 32px 1fr;
    padding: 14px 13px;
  }
  .opt-letter {
    width: 32px;
    height: 32px;
  }
  .opt-text {
    font-size: 15px;
    padding-top: 4px;
  }
  .stat-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .stat-box { padding: 13px 10px; }
  .stat-n { font-size: 22px; }
  .stat-l { font-size: 11px; }
  .job-grid,
  .mode-grid { grid-template-columns: 1fr; }
  .start-btn {
    position: sticky;
    bottom: 12px;
    z-index: 80;
  }
  .action-row { grid-template-columns: 1fr; }
  .rstat-row { grid-template-columns: repeat(3, 1fr); }
  .timer-box { font-size: 15px; min-width: 70px; }
  .hero h1 { font-size: clamp(22px, 6vw, 36px); }
  .expl-panel.open { max-height: 180px; }
}
@media (min-width: 600px) {
  .opts-grid { grid-template-columns: 1fr 1fr; }
  .job-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 768px) {
  .cat-grid { grid-template-columns: repeat(3, 1fr); }
}


/* ═══ v9 UPGRADES ═══ */

/* ─────────────────────────────────────
   v9 NEW: ABILITY LEVEL BADGE
───────────────────────────────────── */
.level-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: 12px; margin: 16px 0;
  font-weight: 800; font-size: 15px; letter-spacing: 1px;
  border: 2px solid;
}
.level-badge.level-pro {
  background: rgba(229,182,74,.12); border-color: rgba(229,182,74,.5);
  color: var(--gold);
}
.level-badge.level-mid {
  background: rgba(31,181,204,.12); border-color: rgba(31,181,204,.5);
  color: var(--teal);
}
.level-badge.level-basic {
  background: rgba(232,96,46,.12); border-color: rgba(232,96,46,.4);
  color: var(--accent);
}

/* ─────────────────────────────────────
   v9 NEW: RADAR CHART SECTION
───────────────────────────────────── */
.radar-section {
  background: var(--surf); border: 1px solid var(--border);
  border-radius: var(--r2); padding: 20px; margin-bottom: 18px;
}
.radar-title {
  font-size: 10px; font-weight: 700; color: var(--t2);
  letter-spacing: 2.2px; text-transform: uppercase;
  margin-bottom: 16px; display: flex; align-items: center; gap: 8px;
}
.radar-title::before {
  content: ''; width: 18px; height: 2px;
  background: linear-gradient(90deg, var(--teal), transparent);
  border-radius: 2px;
}
.radar-wrap {
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap; gap: 20px;
}
.radar-legend {
  flex: 1; min-width: 160px;
  display: flex; flex-direction: column; gap: 8px;
}
.radar-leg-item {
  display: flex; align-items: center; gap: 10px;
}
.radar-leg-dot {
  width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0;
}
.radar-leg-label { font-size: 12px; color: var(--t2); flex: 1; }
.radar-leg-pct {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px; font-weight: 700;
}

/* ─────────────────────────────────────
   v9 NEW: HISTORY / RECORDS SCREEN
───────────────────────────────────── */
.history-empty {
  text-align: center; padding: 48px 20px; color: var(--t3);
}
.history-empty-icon { font-size: 48px; margin-bottom: 12px; display: block; }
.history-empty-txt { font-size: 13px; }

.history-card {
  background: var(--surf); border: 1px solid var(--border);
  border-radius: var(--r2); padding: 16px; margin-bottom: 10px;
  cursor: pointer; transition: var(--trans); position: relative;
  overflow: hidden;
}
.history-card::before {
  content: ''; position: absolute; top: 0; left: 0; bottom: 0; width: 3px;
}
.history-card.pass::before { background: var(--ok); }
.history-card.fail::before { background: var(--err); }
.history-card.mid::before { background: var(--warn); }
.history-card:hover { border-color: var(--border3); transform: translateX(2px); }

.hc-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.hc-meta { font-size: 10px; color: var(--t3); letter-spacing: .3px; }
.hc-score {
  font-family: 'IBM Plex Mono', monospace; font-size: 18px; font-weight: 700;
}
.hc-score.pass { color: var(--ok); }
.hc-score.fail { color: var(--err); }
.hc-score.mid { color: var(--warn); }
.hc-info { display: flex; gap: 8px; flex-wrap: wrap; }
.hc-tag {
  padding: 2px 8px; border-radius: 6px; font-size: 10px; font-weight: 700;
  background: var(--surf2); border: 1px solid var(--border2); color: var(--t2);
}
.hc-level { font-size: 10px; font-weight: 700; padding: 2px 8px; border-radius: 6px; }

.history-summary-row {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 18px;
}
.hs-box {
  background: var(--surf); border: 1px solid var(--border);
  border-radius: var(--r); padding: 12px 8px; text-align: center;
}
.hs-n {
  font-family: 'IBM Plex Mono', monospace; font-size: 20px; font-weight: 700;
  color: var(--accent);
}
.hs-l { font-size: 10px; color: var(--t2); margin-top: 4px; }

/* History nav tab */
.history-tabs {
  display: flex; gap: 6px; margin-bottom: 16px;
}
.htab {
  flex: 1; padding: 9px; border-radius: 10px; font-size: 12px; font-weight: 700;
  font-family: 'Noto Sans TC', sans-serif; cursor: pointer; transition: var(--trans);
  border: 1.5px solid var(--border); background: var(--surf); color: var(--t2);
  text-align: center;
}
.htab.active { background: var(--surf2); border-color: var(--accent); color: var(--accent); }

/* ─────────────────────────────────────
   v9 NEW: EXPORT REPORT BUTTON
───────────────────────────────────── */
.export-btn {
  width: 100%; padding: 13px; border-radius: 11px;
  background: linear-gradient(135deg, #1a7a6e 0%, #0f5c52 100%);
  border: none; color: #fff; font-size: 13px; font-weight: 700;
  font-family: 'Noto Sans TC', sans-serif; cursor: pointer; transition: var(--trans);
  letter-spacing: 1px; margin-bottom: 10px; display: flex; align-items: center;
  justify-content: center; gap: 8px;
  box-shadow: 0 4px 16px rgba(26,122,110,.3);
}
.export-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(26,122,110,.4); }

/* ─────────────────────────────────────
   v9 NEW: HOME HISTORY BUTTON
───────────────────────────────────── */
.home-hist-btn {
  width: 100%; padding: 13px; border-radius: var(--r);
  background: var(--surf); border: 1.5px solid var(--border);
  color: var(--t2); font-size: 13px; font-weight: 700;
  font-family: 'Noto Sans TC', sans-serif; cursor: pointer; transition: var(--trans);
  letter-spacing: 1px; margin-top: 10px;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.home-hist-btn:hover { border-color: var(--border3); color: var(--t1); background: var(--surf2); }

/* ─────────────────────────────────────
   v9 NEW: TIMER MODE INDICATOR
───────────────────────────────────── */
.timer-mode-tag {
  font-size: 9px; font-weight: 700; color: var(--t3);
  letter-spacing: 1px; text-align: center; margin-top: 2px;
}


/* ============================================================
   v27 稽核補強：無障礙、鍵盤焦點、動態偏好、新元件
   ============================================================ */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--gold) !important;
  outline-offset: 2px;
  border-radius: 10px;
}
button.opt-btn, button.learn-opt {
  width: 100%; text-align: left; font: inherit; color: var(--t1);
  -webkit-appearance: none; appearance: none;
}
.opt-btn.selected .opt-text { color: var(--t1); font-weight: 600; }
.qmap-dot { font-size: 11px; }
.assess-note {
  font-size: 12px; line-height: 1.6; color: var(--t2);
  background: rgba(31,181,204,.07); border: 1px dashed rgba(31,181,204,.35);
  border-radius: 10px; padding: 8px 12px; margin: 10px 0;
}
.candidate-box { margin: 4px 0 14px; }
.candidate-label { display: block; font-size: 12px; font-weight: 700; color: var(--t2); margin-bottom: 6px; }
.candidate-input {
  width: 100%; padding: 11px 13px; border-radius: 10px;
  background: var(--surf2); border: 1.5px solid var(--border2); color: var(--t1);
  font-size: 15px; font-family: 'Noto Sans TC', sans-serif;
}
.candidate-input:focus-visible { border-color: var(--gold); }
.candidate-hint { font-size: 11px; color: var(--t3); margin-top: 5px; line-height: 1.5; }
.hc-sub { font-size: 11px; color: var(--t3); }
.qmap-dot.answered.current { background: var(--accent); color: #fff; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important; animation-iteration-count: 1 !important;
    transition-duration: .001ms !important; scroll-behavior: auto !important;
  }
}
@media (forced-colors: active) {
  .opt-btn.selected, .opt-btn.correct, .opt-btn.wrong { outline: 2px solid CanvasText; }
}
@media print {
  .app-header, .qnav, .qmap, .result-actions, .export-btn, .toast, .loader { display: none !important; }
  body { background: #fff !important; color: #000 !important; }
}