:root {
  color-scheme: light;
  --green: #11c76f;
  --green-ink: #08793f;
  --on-green: #04321b;
  --bg: #f7f8fa;
  --paper: #fff;
  --text: #13171d;
  --muted: #5d6571;
  --faint: #8a919c;
  --line: #e6e8ec;
  --hover: #f1f3f6;
  --soft: #e8f8ef;
  --soft-line: #c9eeda;
  --thumb: #fff;
  --red: #ae3846;
  --yellow: #805c12;
  --shadow: 0 1px 2px rgb(16 24 40 / 4%);
  --shadow-lift: 0 10px 24px -10px rgb(16 24 40 / 18%);
  --ease: cubic-bezier(.2, .8, .2, 1);
  --theme-t: background-color 200ms ease-out, border-color 200ms ease-out, color 200ms ease-out;
  --sidebar-w: 240px;
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 16px;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --green-ink: #4fe09a;
  --bg: #0d0f13;
  --paper: #15181e;
  --text: #eef0f3;
  --muted: #a2a9b4;
  --faint: #79808b;
  --line: #262a33;
  --hover: #1d2129;
  --soft: #12291d;
  --soft-line: #1c4a31;
  --thumb: #333946;
  --red: #ffadb7;
  --yellow: #f1d58a;
  --shadow: none;
  --shadow-lift: 0 12px 28px -12px rgb(0 0 0 / 60%);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 15px; line-height: 1.6; transition: var(--theme-t); overflow-x: hidden; }
button, input, select, textarea { font: inherit; color: inherit; }
button, a, input, select, textarea { -webkit-tap-highlight-color: transparent; }
button, a, select, input[type="range"] { touch-action: manipulation; }
button { cursor: pointer; border: 1px solid transparent; background: none; }
button:disabled { cursor: default; opacity: .5; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; }
[hidden] { display: none !important; }
.icon { width: 18px; height: 18px; flex: none; vertical-align: middle; pointer-events: none; }
[data-icon] { display: inline-flex; align-items: center; justify-content: center; }
h1, h2, h3, p { overflow-wrap: break-word; }

/* Sidebar (desktop) / top bar + bottom tabs (mobile) */
.sidebar { position: fixed; inset: 0 auto 0 0; z-index: 20; width: var(--sidebar-w); display: flex; flex-direction: column; padding: 20px 14px 16px; background: var(--paper); border-right: 1px solid var(--line); transition: var(--theme-t); }
.brand { display: flex; align-items: center; gap: 10px; padding: 6px 8px; border-radius: 12px; text-decoration: none; min-width: 0; }
.brand-avatar { width: 36px; height: 36px; flex: none; border-radius: 50%; object-fit: cover; object-position: center 30%; background: var(--hover); box-shadow: 0 0 0 2px var(--paper), 0 0 0 3px var(--line); }
.brand-text { display: flex; flex-direction: column; min-width: 0; line-height: 1.3; }
.brand-text strong { font-size: 14px; font-weight: 600; letter-spacing: -.01em; }
.brand-text small { font-size: 12px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nav { position: relative; display: grid; gap: 2px; margin-top: 28px; }
.nav a { position: relative; z-index: 1; display: flex; align-items: center; gap: 12px; height: 40px; padding: 0 12px; border-radius: 10px; color: var(--muted); font-size: 14px; font-weight: 500; text-decoration: none; transition: var(--theme-t); }
.nav a:not([aria-current]):hover { background: var(--hover); color: var(--text); }
.nav a[aria-current="page"] { color: var(--text); font-weight: 600; }
.nav a[aria-current="page"] .icon { color: var(--green-ink); }
.nav-short { display: none; }
.nav-indicator { position: absolute; top: 0; left: 0; right: 0; height: 40px; border-radius: 10px; background: var(--soft); transform: translateY(calc(var(--i, 0) * 42px)); }
.nav-indicator::before { content: ''; position: absolute; left: 0; top: 11px; bottom: 11px; width: 3px; border-radius: 0 3px 3px 0; background: var(--green); }
.nav-ready .nav-indicator { transition: transform 260ms var(--ease), background-color 200ms ease-out; }
.sidebar-foot { margin-top: auto; display: grid; gap: 14px; }
.progress-block { padding: 12px 12px 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); transition: var(--theme-t); }
.progress-head { display: flex; justify-content: space-between; align-items: baseline; font-size: 12px; }
.progress-label { color: var(--muted); font-weight: 500; }
.progress-count { font-weight: 600; font-variant-numeric: tabular-nums; }
.progress-track { height: 6px; margin-top: 8px; border-radius: 99px; background: var(--line); overflow: hidden; }
.progress-fill { display: block; height: 100%; width: calc(var(--p, 0) * 1%); border-radius: inherit; background: var(--green); transition: width 300ms var(--ease); }
.theme-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 0 4px 0 12px; }
.theme-label { font-size: 13px; color: var(--muted); font-weight: 500; }

/* Theme switch: 3px padding + two 26px slots + 6px gap = 64px; thumb travels exactly 32px. */
.theme-switch { position: relative; flex: none; display: grid; grid-template-columns: 26px 26px; gap: 6px; width: 64px; height: 32px; padding: 3px; border: 0; border-radius: 999px; background: var(--hover); box-shadow: inset 0 0 0 1px var(--line); color: var(--faint); transition: var(--theme-t), box-shadow 200ms ease-out; }
.theme-thumb { position: absolute; top: 3px; left: 3px; width: 26px; height: 26px; border-radius: 50%; background: var(--thumb); box-shadow: 0 1px 3px rgb(16 24 40 / 16%); transition: transform 240ms var(--ease), background-color 200ms ease-out; }
[data-theme="dark"] .theme-thumb { transform: translateX(32px); }
.theme-icon { position: relative; z-index: 1; width: 26px; height: 26px; transition: color 200ms ease-out; }
.theme-icon .icon { width: 15px; height: 15px; }
:root:not([data-theme="dark"]) .theme-icon[data-icon="sun"] { color: #b7791f; }
[data-theme="dark"] .theme-icon[data-icon="moon"] { color: var(--text); }
.theme-switch:hover { box-shadow: inset 0 0 0 1px var(--faint); }

/* Main column */
main { margin-left: var(--sidebar-w); padding: 40px clamp(24px, 4vw, 56px) 72px; min-height: 100vh; outline: none; }
main > .view, main > .notice { max-width: 960px; margin: 0 auto; }
main > .study-view { max-width: 780px; }
.view { scroll-margin-top: 200px; }
.view:not([hidden]) { animation: view-in 260ms ease-out both; }
@keyframes view-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.section-heading { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 20px; }
.section-heading h1 { font-size: 28px; font-weight: 650; letter-spacing: -.025em; line-height: 1.2; margin: 0; }
.section-count { white-space: nowrap; color: var(--muted); font-size: 12px; font-weight: 500; border: 1px solid var(--line); border-radius: 99px; padding: 4px 12px; background: var(--paper); font-variant-numeric: tabular-nums; transition: var(--theme-t); }
.eyebrow { font-size: 12px; font-weight: 600; color: var(--muted); margin: 0 0 10px; font-variant-numeric: tabular-nums; }
.block-title { font-size: 15px; font-weight: 600; letter-spacing: -.01em; margin: 36px 0 14px; }
.helper { color: var(--muted); font-size: 13px; }
.center { text-align: center; }
.card, .panel { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); transition: var(--theme-t), transform 200ms ease-out, box-shadow 200ms ease-out; }
.panel { padding: 28px; }

/* Persona */
.profile { display: grid; grid-template-columns: 176px 1fr; gap: 28px; padding: 24px; align-items: start; }
.profile-photo { position: relative; aspect-ratio: 1; border-radius: 12px; overflow: hidden; background: var(--hover); display: grid; place-items: center; }
.profile-photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 30%; }
.portrait-fallback { color: var(--muted); font-size: 40px; font-weight: 600; }
.profile-name { font-size: 22px; font-weight: 650; letter-spacing: -.02em; line-height: 1.25; margin: 2px 0 6px; }
.profile-role { margin: 0; font-size: 14px; color: var(--muted); }
.company { color: var(--green-ink); font-weight: 600; }
.profile-meta { margin: 2px 0 0; font-size: 13px; color: var(--faint); }
.profile-quote { margin: 18px 0 0; padding: 2px 0 2px 14px; border-left: 2px solid var(--green); font-size: 15px; line-height: 1.55; }
.traits { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0 0; padding: 0; }
.trait { display: inline-flex; align-items: center; gap: 8px; padding: 5px 12px 5px 5px; border: 1px solid var(--soft-line); border-radius: 99px; background: var(--soft); font-size: 13px; font-weight: 500; line-height: 1.4; transition: var(--theme-t); }
.trait-dot { display: grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; background: var(--green); color: var(--on-green); }
.trait-dot .icon { width: 12px; height: 12px; stroke-width: 2.5; }
.download { text-decoration: none; }
.facts-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.fact { padding: 18px 20px 20px; }
.fact h3 { display: flex; align-items: center; gap: 10px; font-size: 13px; font-weight: 500; color: var(--muted); margin: 0 0 10px; }
.fact-icon { display: grid; place-items: center; width: 30px; height: 30px; flex: none; border-radius: 8px; background: var(--soft); color: var(--green-ink); transition: var(--theme-t); }
.fact-icon .icon { width: 16px; height: 16px; }
.fact p { margin: 0; font-size: 14px; line-height: 1.55; }
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 0; }
.stat { padding: 14px 16px; }
.stat dt { font-size: 12px; font-weight: 500; color: var(--muted); margin: 0 0 2px; }
.stat dd { margin: 0; font-size: 15px; font-weight: 600; letter-spacing: -.01em; line-height: 1.4; }
.ascii-art { font-family: ui-monospace, 'Cascadia Mono', Consolas, 'SFMono-Regular', Menlo, monospace; font-size: 11px; line-height: 1.2; color: var(--muted); margin: 14px 0 0; white-space: pre; overflow: hidden; text-align: left; }
.ascii-art.center { width: fit-content; margin-inline: auto; }
.dolphin { font-size: 12.5px; line-height: 1.25; color: var(--green-ink); margin-top: 16px; }

/* Memorize */
.toolbar { display: flex; align-items: flex-end; gap: 24px; padding: 16px 20px; }
.toolbar label, .question-picker label, .practice-panel > label { font-size: 12px; font-weight: 600; color: var(--muted); display: block; }
select { display: block; min-height: 40px; padding: 8px 32px 8px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); color: var(--text); max-width: 100%; font-size: 14px; transition: var(--theme-t); }
.toolbar select { margin-top: 6px; min-width: 160px; }
.rate-control { flex: 1; max-width: 240px; }
.rate-control output { float: right; color: var(--text); font-variant-numeric: tabular-nums; }
.rate-control input { display: block; width: 100%; height: 40px; margin: 0; accent-color: var(--green); }
.toolbar button { margin-left: auto; }
#speech-note { margin: 12px 2px 0; }
.question-list { display: grid; gap: 12px; margin-top: 16px; }
.question-card { padding: 22px 24px; }
.question-top { display: flex; align-items: flex-start; gap: 12px; }
.question-top > div { flex: 1; min-width: 0; }
.q-number { flex: none; margin-top: 2px; padding: 1px 7px; border-radius: 6px; background: var(--soft); color: var(--green-ink); font-size: 12px; font-weight: 600; font-variant-numeric: tabular-nums; }
.question-card h2 { font-size: 16px; font-weight: 600; line-height: 1.5; margin: 0; letter-spacing: -.01em; }
.audio-btn { display: grid; place-items: center; width: 40px; height: 40px; flex: none; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); color: var(--muted); transition: var(--theme-t), transform 120ms ease-out; }
.audio-btn:hover { color: var(--green-ink); border-color: var(--soft-line); background: var(--soft); }
.answer { font-size: 15px; line-height: 1.8; margin: 16px 0; white-space: pre-wrap; }
.answer-hidden { width: 100%; text-align: left; border: 1px dashed var(--line); border-radius: 10px; padding: 18px; background: var(--bg); color: var(--muted); }
.cloze-word { display: inline; padding: 0 3px; border-radius: 4px; border: 0; border-bottom: 1px dashed var(--green); background: var(--soft); color: var(--text); letter-spacing: 1px; font: inherit; }
.cue { display: block; font-size: 13px; color: var(--muted); line-height: 1.6; }
.cue-label { font-size: 11px; font-weight: 600; color: var(--green-ink); background: var(--soft); border-radius: 5px; padding: 1px 6px; margin-right: 8px; }
.question-bottom { border-top: 1px solid var(--line); padding-top: 12px; display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.translation { color: var(--muted); font-size: 14px; border-left: 2px solid var(--green); padding: 0 0 0 14px; margin: 14px 0 0; }
.badge { display: inline-block; font-size: 11px; background: var(--hover); color: var(--muted); padding: 2px 9px; border-radius: 99px; margin-top: 6px; }

/* Buttons */
.primary, .secondary, .subtle { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 40px; padding: 8px 16px; border-radius: 10px; font-size: 14px; font-weight: 600; line-height: 1.4; white-space: nowrap; transition: var(--theme-t), transform 120ms ease-out, box-shadow 200ms ease-out; }
.primary { background: var(--green); color: var(--on-green); }
.primary:hover { background: #22d27c; }
.secondary { background: var(--paper); color: var(--text); border-color: var(--line); box-shadow: var(--shadow); }
.secondary:hover { background: var(--hover); }
.subtle { color: var(--muted); padding: 8px 12px; font-weight: 500; }
.subtle:hover { background: var(--hover); color: var(--text); }
.primary:active, .secondary:active, .subtle:active, .audio-btn:active { transform: scale(.97); }
.button-row { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }

/* Flashcards */
.flash-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.flash-top .eyebrow { margin: 0; }
.flash-card { display: block; width: 100%; padding: 0; border: 0; border-radius: 16px; background: none; color: var(--text); text-align: center; perspective: 1600px; transition: transform 200ms ease-out; }
.flash-inner { display: grid; transform-style: preserve-3d; transition: transform 300ms var(--ease); }
.flash-card.flipped .flash-inner { transform: rotateY(180deg); }
.flash-card.no-anim .flash-inner { transition: none; }
.flash-face { grid-area: 1 / 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; min-height: 340px; padding: 40px 36px; background: var(--paper); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); backface-visibility: hidden; -webkit-backface-visibility: hidden; transition: var(--theme-t), box-shadow 200ms ease-out; }
.flash-face .eyebrow { margin: 0; }
.flash-back { transform: rotateY(180deg); border-color: var(--green); }
.flash-back .eyebrow { color: var(--green-ink); }
.flash-text { font-size: clamp(18px, 2.6vw, 23px); font-weight: 500; letter-spacing: -.015em; line-height: 1.55; max-width: 640px; }
.flash-back .flash-text { font-size: clamp(16px, 2.2vw, 19px); }
.flash-hint { font-size: 12px; color: var(--faint); margin-top: 10px; }
.flash-actions { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin: 16px 0 4px; }
#flash-celebration { color: var(--green-ink); margin: 16px auto 0; font-size: 13px; }
.hint-touch { display: none; }
@media (hover: none) and (pointer: coarse) { .hint-desktop { display: none; } .hint-touch { display: inline; } }

/* Practice */
.question-picker { margin-bottom: 4px; }
.picker-row { display: flex; gap: 10px; margin-top: 6px; }
.picker-row select { flex: 1; min-width: 0; width: 100%; }
.practice-panel h2 { font-size: 19px; font-weight: 600; line-height: 1.45; letter-spacing: -.015em; margin: 24px 0 18px; }
textarea { width: 100%; resize: vertical; display: block; background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; margin: 6px 0 16px; line-height: 1.7; font-size: 15px; transition: var(--theme-t); }
.result-panel { margin-top: 16px; }
.result-top { display: flex; align-items: center; gap: 16px; }
.accuracy { font-size: 40px; font-weight: 650; letter-spacing: -.04em; line-height: 1; color: var(--green-ink); font-variant-numeric: tabular-nums; }
.result-top h2 { font-size: 16px; margin: 0; }
.diff { font-size: 15px; line-height: 2.1; margin-top: 18px; }
.diff span { padding: 2px 4px; border-radius: 4px; }
.diff-correct { background: var(--soft); color: #137346; }
.diff-missing { background: #fde7e9; color: var(--red); text-decoration: line-through; }
.diff-extra { background: #fff0c9; color: var(--yellow); }
.diff-legend { display: flex; gap: 12px; flex-wrap: wrap; font-size: 12px; margin-top: 18px; }
.diff-legend span { padding: 2px 8px; border-radius: 4px; }
[data-theme="dark"] .diff-correct { color: #8ae4b6; }
[data-theme="dark"] .diff-missing { background: #40242a; }
[data-theme="dark"] .diff-extra { background: #3d341e; }

/* Interview */
.exam-panel { text-align: center; padding: 36px; min-height: 400px; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.exam-panel .ascii-art { margin: 0 0 20px; font-size: 13px; color: var(--green-ink); }
.exam-panel .eyebrow { margin-bottom: 6px; }
.exam-panel h2 { font-size: 24px; font-weight: 600; line-height: 1.4; letter-spacing: -.02em; max-width: 640px; margin: 4px 0 12px; }
.exam-panel > p { max-width: 520px; color: var(--muted); font-size: 14px; margin: 0 0 16px; }
.exam-panel .button-row { justify-content: center; }
.exam-timer { display: flex; align-items: baseline; gap: 8px; font-size: 52px; font-weight: 600; letter-spacing: -.03em; font-variant-numeric: tabular-nums; line-height: 1.1; margin: 16px 0 20px; }
.exam-timer .icon { color: var(--muted); align-self: center; }
.exam-timer small { font-size: 13px; font-weight: 500; letter-spacing: 0; color: var(--muted); }
.exam-answer { text-align: left; background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 20px; margin: 8px 0 18px; line-height: 1.8; font-size: 15px; max-width: 640px; }
.exam-answer .cue { margin-top: 10px; }
.exam-options { display: flex; align-items: center; gap: 10px; margin: 4px 0 20px; font-size: 14px; color: var(--muted); }
.exam-options select { display: inline-block; }
.exam-score { font-size: 56px; line-height: 1.1; letter-spacing: -.04em; font-weight: 650; margin: 8px 0 12px; font-variant-numeric: tabular-nums; }
.exam-review { margin-top: 24px; width: 100%; text-align: left; }
.exam-review summary { cursor: pointer; font-size: 14px; font-weight: 600; min-height: 40px; }
.exam-review li { margin: 10px 0; font-size: 14px; }

.notice { padding: 28px; background: var(--paper); border-radius: 14px; border: 1px solid var(--line); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; top: -60px; left: 20px; z-index: 50; background: var(--green); color: var(--on-green); padding: 10px 14px; border-radius: 10px; }
.skip-link:focus { top: 10px; }

@media (hover: hover) and (min-width: 900px) {
  .fact:hover, .stat:hover { transform: translateY(-2px); box-shadow: var(--shadow-lift); }
  .flash-card:hover { transform: translateY(-2px); }
  .flash-card:hover .flash-face { box-shadow: var(--shadow-lift); }
}

@media (max-width: 1100px) and (min-width: 900px) {
  .facts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 899px) {
  /* Blur lives on a pseudo-element: backdrop-filter on the header itself would trap the fixed bottom nav inside it. */
  .sidebar { position: sticky; top: 0; inset: auto; width: auto; flex-direction: row; align-items: center; justify-content: space-between; gap: 12px; min-height: 60px; padding: env(safe-area-inset-top) 16px 0; border-right: 0; border-bottom: 1px solid var(--line); background: none; }
  .sidebar::before { content: ''; position: absolute; inset: 0; z-index: -1; background: color-mix(in srgb, var(--paper) 92%, transparent); backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px); transition: var(--theme-t); }
  .brand { padding: 0; gap: 10px; }
  .brand-avatar { width: 34px; height: 34px; }
  .brand-text small { font-size: 11px; }
  .nav { position: fixed; left: 0; right: 0; bottom: 0; z-index: 30; margin: 0; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; padding: 6px 4px calc(6px + env(safe-area-inset-bottom)); background: color-mix(in srgb, var(--paper) 94%, transparent); border-top: 1px solid var(--line); backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px); transition: var(--theme-t); }
  .nav a { flex-direction: column; justify-content: flex-start; gap: 2px; height: 52px; padding: 0; border-radius: 0; font-size: 11px; font-weight: 500; }
  .nav a:not([aria-current]):hover { background: none; }
  .nav a [data-icon] { width: 52px; height: 30px; }
  .nav a .icon { width: 20px; height: 20px; }
  .nav-long { display: none; }
  .nav-short { display: inline; }
  .nav-indicator { top: 6px; left: 4px; right: auto; width: calc((100% - 8px) / 5); height: 30px; background: none; transform: translateX(calc(var(--i, 0) * 100%)); }
  .nav-indicator::before { left: 50%; top: 0; bottom: auto; width: 52px; height: 30px; margin-left: -26px; border-radius: 99px; background: var(--soft); transition: background-color 200ms ease-out; }
  .sidebar-foot { margin: 0; display: flex; align-items: center; gap: 12px; }
  .progress-block { display: flex; padding: 0; border: 0; background: none; }
  .progress-label, .theme-label { display: none; }
  .progress-count { font-size: 12px; color: var(--muted); }
  .progress-track { position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; margin: 0; border-radius: 0; background: transparent; }
  .progress-fill { border-radius: 0 2px 2px 0; }
  .theme-row { padding: 0; }
  main { margin-left: 0; padding: 24px 16px calc(96px + env(safe-area-inset-bottom)); min-height: 0; }
  .section-heading h1 { font-size: 24px; }
  .facts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .toolbar { flex-wrap: wrap; gap: 16px; padding: 16px; }
  .rate-control { min-width: 140px; }
  .toolbar button { margin-left: 0; }
  .question-card { padding: 18px; }
  .question-bottom { align-items: flex-start; flex-direction: column; gap: 6px; }
  .question-bottom .subtle { margin-left: -12px; }
  .flash-face { min-height: 320px; padding: 28px 22px; }
  .flash-actions { flex-wrap: wrap; justify-content: center; }
  .flash-actions > .button-row { order: -1; width: 100%; }
  .flash-actions > .button-row button { flex: 1; }
  .flash-actions > .subtle { flex: 1; }
  .panel { padding: 22px 18px; }
  .exam-panel { padding: 28px 20px; min-height: 360px; }
  .exam-panel h2 { font-size: 21px; }
}

@media (max-width: 599px) {
  .profile { grid-template-columns: 72px 1fr; gap: 0 16px; padding: 18px; align-items: center; }
  .profile-photo { grid-row: 1 / span 3; border-radius: 50%; }
  .portrait-fallback { font-size: 24px; }
  .profile-name { font-size: 19px; margin: 0 0 2px; }
  .profile-role { font-size: 13px; }
  .profile-body { display: contents; }
  .profile-name, .profile-role, .profile-meta { grid-column: 2; }
  .profile-quote, .traits { grid-column: 1 / -1; }
  .profile-quote { margin-top: 16px; font-size: 14px; }
  .traits { margin-top: 14px; }
  .facts-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .stat { padding: 12px 14px; }
  .stat dd { font-size: 14px; }
  .toolbar label { width: 100%; max-width: none; }
  .toolbar select { width: 100%; }
  .flash-top { align-items: flex-start; flex-direction: column; gap: 4px; }
  .flash-top .button-row { margin-left: -12px; gap: 2px; }
  .picker-row { flex-wrap: wrap; }
  .picker-row select { flex-basis: 100%; }
  .question-card h2 { font-size: 15px; }
  .answer { font-size: 15px; }
  .result-top { align-items: flex-start; }
  .accuracy { font-size: 32px; }
  .exam-timer { font-size: 44px; }
  .practice-panel > .button-row > button { flex: 1 1 auto; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}