/* MCQ practice (/mcq). Everything is prefixed mq- so it cannot touch other pages. */
/* Bangla is set in Kalpurush (SIL Open Font License, see fonts/Kalpurush-OFL.txt). */
@font-face { font-family: 'Kalpurush'; src: url('/assets/fonts/Kalpurush.woff2') format('woff2'); font-weight: 400 900; font-display: swap; }
.mq { --mq-ink: var(--ink, #08152f); --mq-muted: var(--muted, #56627a); --mq-line: var(--line, #dce7f5); --mq-brand: var(--blue-2, #1747ca); --mq-teal: #0e9fa2; --mq-good: #12a77a; --mq-bad: #d6453a; --mq-warn: #f2a73b; --mq-navy: #0b1b3f; }
.mq-bn, .mq-bn button, .mq-bn input { font-family: 'Kalpurush', 'Noto Sans Bengali', 'Hind Siliguri', 'Nirmala UI', 'Vrinda', system-ui, sans-serif; }
.mq-bn .mq-stem { line-height: 1.7; }
.mq-bn .mq-opt, .mq-bn .mq-why { line-height: 1.7; }

.mq-hero { padding: 36px 0 8px; }
.mq-hero-row { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; }
.mq-hero h1 { margin: 0 0 8px; font-size: clamp(2rem, 4.4vw, 2.9rem); }
.mq-lede { margin: 0; max-width: 66ch; color: var(--mq-muted); font-size: 1.08rem; line-height: 1.6; }
.mq-lang { display: inline-flex; border: 1px solid var(--mq-line); border-radius: 999px; padding: 3px; background: #fff; }
.mq-lang button { border: 0; background: transparent; padding: 8px 16px; border-radius: 999px; font: inherit; font-size: .95rem; font-weight: 700; color: var(--mq-ink); cursor: pointer; }
.mq-lang button[aria-pressed="true"] { background: var(--mq-ink); color: #fff; }
.mq-lang button:focus-visible { outline: 3px solid var(--mq-brand); outline-offset: 2px; }
.mq-banner { margin: 14px 0 0; padding: 10px 14px; border-radius: 12px; background: #fff6e2; color: #7a4a00; font-size: .95rem; max-width: 70ch; }
.mq-banner-soft { background: #eef4fb; color: var(--mq-muted); }
.mq-stage { padding: 18px 0 56px; }
.mq-foot { margin: 28px 0 0; color: var(--mq-muted); font-size: .9rem; }

.mq-stats { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.mq-stat { display: grid; gap: 2px; min-width: 120px; padding: 12px 16px; border: 1px solid var(--mq-line); border-radius: 14px; background: #fff; }
.mq-stat b { font-size: 1.5rem; line-height: 1.2; color: var(--mq-ink); }
.mq-stat span { font-size: .82rem; color: var(--mq-muted); font-weight: 600; }
.mq-stat.hot b { color: #c25c00; }

.mq-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 16px; }
.mq-card { display: flex; flex-direction: column; gap: 10px; padding: 20px; border: 1px solid var(--mq-line); border-radius: 18px; background: #fff; box-shadow: 0 14px 35px rgba(7, 25, 62, .06); }
.mq-card h2 { margin: 0; font-size: 1.2rem; }
.mq-card p { margin: 0; color: var(--mq-muted); line-height: 1.55; }
.mq-card .mq-spacer { flex: 1; }
.mq-card.feature { background: linear-gradient(135deg, #0b1b3f, #173b9a); border-color: transparent; color: #fff; }
.mq-card.feature p { color: #cdd8f2; }
.mq-card.feature h2 { color: #fff; }
.mq-card.gold { background: linear-gradient(135deg, #fff8e6, #ffeec2); border-color: #f2d98a; }
.mq-chapters { display: grid; gap: 8px; margin-top: 4px; }

.mq-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 18px; border: 1px solid var(--mq-line); border-radius: 12px; background: #fff; color: var(--mq-ink); font: inherit; font-weight: 700; cursor: pointer; text-decoration: none; transition: transform .12s ease, border-color .12s ease; }
.mq-btn:hover:not(:disabled) { border-color: var(--mq-ink); transform: translateY(-1px); }
.mq-btn:disabled { opacity: .5; cursor: not-allowed; }
.mq-btn.primary { background: var(--mq-ink); border-color: var(--mq-ink); color: #fff; }
.mq-btn.light { background: #fff; border-color: #fff; color: var(--mq-navy); }
.mq-btn.gold { background: #f2a73b; border-color: #f2a73b; color: #3b2300; }
.mq-btn.small { min-height: 38px; padding: 0 14px; font-size: .92rem; }
.mq-btn.wide { justify-content: space-between; width: 100%; text-align: left; }
.mq-btn:focus-visible, .mq-opt:focus-visible, .mq-fig button:focus-visible { outline: 3px solid var(--mq-brand); outline-offset: 2px; }

.mq-run { max-width: 760px; }
.mq-bar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; color: var(--mq-muted); font-weight: 650; }
.mq-bar .mq-grow { flex: 1; }
.mq-time { padding: 5px 12px; border-radius: 999px; background: #eef4fb; color: var(--mq-ink); font-variant-numeric: tabular-nums; }
.mq-time.low { background: #fde8e6; color: var(--mq-bad); }
.mq-progress { height: 8px; border-radius: 999px; background: var(--mq-line); overflow: hidden; margin-bottom: 18px; }
.mq-progress i { display: block; height: 100%; background: linear-gradient(90deg, var(--mq-teal), #12a77a); transition: width .3s ease; }

.mq-q { padding: 22px; border: 1px solid var(--mq-line); border-radius: 18px; background: #fff; box-shadow: 0 14px 35px rgba(7, 25, 62, .06); animation: mq-in .28s ease both; }
@keyframes mq-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.mq-chip { display: inline-block; margin: 0 6px 10px 0; padding: 3px 10px; border-radius: 999px; background: #eef4fb; color: var(--mq-muted); font-size: .8rem; font-weight: 700; }
.mq-chip.draft { background: #fff1d6; color: #8a4b05; }
.mq-chip.hot { background: #fff1d6; color: #8a4b05; }
.mq-fig { margin: 0 0 16px; }
.mq-fig button { display: block; width: 100%; padding: 8px; border: 1px solid var(--mq-line); border-radius: 16px; background: #fff; cursor: zoom-in; }
.mq-fig img { display: block; width: 100%; max-width: 420px; height: auto; margin: 0 auto; aspect-ratio: 21 / 16; object-fit: contain; }
.mq-fig figcaption { margin-top: 6px; font-size: .82rem; color: var(--mq-muted); text-align: center; }
.mq-fig.zoom { position: fixed; inset: 0; z-index: 9000; display: grid; place-items: center; margin: 0; padding: 16px; background: rgba(8, 21, 47, .78); }
.mq-fig.zoom button { max-width: 760px; cursor: zoom-out; }
.mq-fig.zoom img { max-width: 720px; }
.mq-fig.zoom figcaption { color: #fff; }
.mq-stem { margin: 0 0 16px; font-size: 1.22rem; line-height: 1.5; font-weight: 700; color: var(--mq-ink); white-space: pre-line; }
.mq-opts { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.mq-opt { display: flex; align-items: flex-start; gap: 12px; width: 100%; padding: 13px 14px; border: 1.5px solid var(--mq-line); border-radius: 14px; background: #fff; font: inherit; font-size: 1.04rem; line-height: 1.45; color: var(--mq-ink); text-align: left; cursor: pointer; transition: border-color .12s ease, background .12s ease, transform .12s ease; }
.mq-opt:hover:not(:disabled) { border-color: var(--mq-ink); transform: translateX(2px); }
.mq-opt .l { flex: none; display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: #eef4fb; font-weight: 800; font-size: .88rem; }
.mq-opt.picked { border-color: var(--mq-brand); background: #f2f6ff; }
.mq-opt.picked .l { background: var(--mq-brand); color: #fff; }
.mq-opt.right { border-color: var(--mq-good); background: #eafaf4; animation: mq-pop .4s ease; }
.mq-opt.right .l { background: var(--mq-good); color: #fff; }
.mq-opt.wrong { border-color: var(--mq-bad); background: #fdeeed; animation: mq-shake .35s ease; }
.mq-opt.wrong .l { background: var(--mq-bad); color: #fff; }
.mq-opt:disabled { cursor: default; }
@keyframes mq-pop { 0% { transform: scale(.98); } 55% { transform: scale(1.02); } 100% { transform: scale(1); } }
@keyframes mq-shake { 0%, 100% { transform: translateX(0); } 25% { transform: translateX(-5px); } 75% { transform: translateX(5px); } }

.mq-why { margin-top: 16px; padding: 14px 16px; border-radius: 14px; background: #f3f8fc; border-left: 4px solid var(--mq-teal); line-height: 1.55; animation: mq-in .3s ease both; }
.mq-why.ok { border-left-color: var(--mq-good); }
.mq-why.no { border-left-color: var(--mq-bad); }
.mq-why strong { display: block; margin-bottom: 4px; }
.mq-meta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 10px; font-size: .86rem; color: var(--mq-muted); }
.mq-meta a { color: var(--mq-muted); }
.mq-nav { display: flex; justify-content: space-between; gap: 12px; margin-top: 16px; flex-wrap: wrap; }

.mq-result { max-width: 820px; }
.mq-hero-score { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; margin: 4px 0 8px; }
.mq-ring { position: relative; width: 168px; height: 168px; flex: none; }
.mq-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.mq-ring circle { fill: none; stroke-width: 14; stroke-linecap: round; }
.mq-ring .bg { stroke: var(--mq-line); }
.mq-ring .fg { stroke: var(--mq-good); stroke-dasharray: 0 999; transition: stroke-dasharray 1s cubic-bezier(.2, .8, .2, 1); }
.mq-ring.mid .fg { stroke: var(--mq-teal); }
.mq-ring.low .fg { stroke: var(--mq-warn); }
.mq-ring .txt { position: absolute; inset: 0; display: grid; place-content: center; text-align: center; }
.mq-ring .txt b { font-size: 2.6rem; line-height: 1; color: var(--mq-ink); }
.mq-ring .txt span { font-size: 1rem; color: var(--mq-muted); font-weight: 700; }
.mq-msg h2 { margin: 0 0 6px; font-size: 1.6rem; }
.mq-msg p { margin: 0 0 8px; color: var(--mq-muted); line-height: 1.55; }
.mq-actions { display: flex; gap: 10px; flex-wrap: wrap; margin: 12px 0 22px; }

.mq-share { padding: 20px; border: 1px solid var(--mq-line); border-radius: 18px; background: #fff; box-shadow: 0 14px 35px rgba(7, 25, 62, .06); margin: 0 0 22px; }
.mq-share h2, .mq-cert h2 { margin: 0 0 12px; font-size: 1.25rem; }
.mq-share-grid { display: grid; grid-template-columns: minmax(0, 300px) minmax(0, 1fr); gap: 22px; align-items: start; }
.mq-share-prev { display: grid; place-items: center; min-height: 160px; border-radius: 16px; background: #eef4fb; padding: 10px; color: var(--mq-muted); text-align: center; }
.mq-share-img { display: block; width: 100%; height: auto; border-radius: 12px; box-shadow: 0 10px 28px rgba(7, 25, 62, .2); }
.mq-share-img.mq-fmt-story { max-width: 190px; }
.mq-fmts { display: inline-flex; border: 1px solid var(--mq-line); border-radius: 999px; padding: 3px; margin-bottom: 14px; }
.mq-fmts button { border: 0; background: transparent; padding: 6px 14px; border-radius: 999px; font: inherit; font-size: .9rem; font-weight: 700; cursor: pointer; color: var(--mq-ink); }
.mq-fmts button[aria-pressed="true"] { background: var(--mq-ink); color: #fff; }
.mq-share-btns { display: flex; gap: 8px; flex-wrap: wrap; }
.mq-sb { display: inline-flex; align-items: center; gap: 8px; min-height: 42px; padding: 0 14px; border: 0; border-radius: 12px; font: inherit; font-size: .92rem; font-weight: 700; color: #fff; cursor: pointer; text-decoration: none; }
.mq-sb.wa { background: #1ea952; } .mq-sb.fb { background: #1877f2; } .mq-sb.tg { background: #229ed9; } .mq-sb.x { background: #111; } .mq-sb.li { background: #0a66c2; }
.mq-sb.sys { background: var(--mq-ink); } .mq-sb.plain { background: #eef4fb; color: var(--mq-ink); }
.mq-sb:hover { filter: brightness(1.08); }
.mq-sb:focus-visible { outline: 3px solid var(--mq-brand); outline-offset: 2px; }

.mq-cert { max-width: 980px; }
.mq-cert-form { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 0 0 16px; }
.mq-cert-form input { flex: 1; min-width: 220px; min-height: 44px; padding: 0 14px; border: 1.5px solid var(--mq-line); border-radius: 12px; font: inherit; font-size: 1.05rem; }
.mq-cert-view { padding: 10px; border-radius: 16px; background: #eef4fb; margin-bottom: 14px; }
.mq-cert-view img { display: block; width: 100%; height: auto; border-radius: 6px; box-shadow: 0 16px 40px rgba(7, 25, 62, .25); }
.mq-cert-print { display: none; }

.mq-review { display: grid; gap: 10px; }
.mq-review details { border: 1px solid var(--mq-line); border-radius: 14px; background: #fff; padding: 12px 16px; }
.mq-review summary { cursor: pointer; font-weight: 650; line-height: 1.45; }
.mq-review .mark { display: inline-block; width: 22px; font-weight: 800; }
.mq-review .mark.ok { color: var(--mq-good); }
.mq-review .mark.no { color: var(--mq-bad); }
.mq-review img { display: block; max-width: 260px; width: 100%; height: auto; margin: 10px 0; background: #fff; border: 1px solid var(--mq-line); border-radius: 12px; }
.mq-empty { padding: 28px; border: 1px dashed var(--mq-line); border-radius: 18px; background: #fff; color: var(--mq-muted); line-height: 1.6; }
.mq-confetti { position: fixed; inset: 0; z-index: 9500; width: 100%; height: 100%; pointer-events: none; }

@media (max-width: 700px) { .mq-share-grid { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .mq-q { padding: 16px; } .mq-stem { font-size: 1.1rem; } .mq-ring { width: 140px; height: 140px; } }
@media (prefers-reduced-motion: reduce) { .mq-progress i, .mq-ring .fg, .mq-q, .mq-why, .mq-opt, .mq-btn { transition: none; animation: none; } }

/* Practice sets */
.mq-sets-h { margin: 34px 0 6px; font-size: 1.4rem; }
.mq-sets-d { margin: 0 0 16px; color: var(--mq-muted); max-width: 70ch; line-height: 1.55; }
.mq-sets { display: grid; grid-template-columns: repeat(auto-fill, minmax(132px, 1fr)); gap: 12px; }
.mq-set { display: grid; gap: 2px; justify-items: start; padding: 14px; border: 1.5px solid var(--mq-line); border-radius: 16px; background: #fff; font: inherit; color: var(--mq-ink); text-align: left; cursor: pointer; transition: transform .12s ease, border-color .12s ease; }
.mq-set:hover { transform: translateY(-2px); border-color: var(--mq-ink); }
.mq-set:focus-visible { outline: 3px solid var(--mq-brand); outline-offset: 2px; }
.mq-set b { font-size: 1.7rem; line-height: 1.1; }
.mq-set span { font-size: .86rem; color: var(--mq-muted); font-weight: 600; }
.mq-set small { font-size: .8rem; color: var(--mq-muted); }
.mq-set.tried { background: #f2f6ff; border-color: #c9d8fb; }
.mq-set.done { background: #eafaf4; border-color: #9fdcc3; }
.mq-set.done small { color: #0a7a52; font-weight: 700; }

/* Print: only the certificate */
@media print {
  @page { size: A4 landscape; margin: 0; }
  body * { visibility: hidden !important; }
  .mq-cert-print, .mq-cert-print * { visibility: visible !important; }
  .mq-cert-print { display: block !important; position: fixed; left: 0; top: 0; width: 100vw; height: 100vh; object-fit: contain; background: #fff; }
}


/* =====================================================================================================
   Landing: a dashboard that invites a first tap, then tiles, then a one-tap way to tell a friend
   ===================================================================================================== */
.mq-ico { flex: none; display: inline-block; vertical-align: -0.2em; }
.mq-rise { animation: mq-rise .5s cubic-bezier(.2, .8, .2, 1) both; animation-delay: calc(var(--i, 0) * 55ms); }
@keyframes mq-rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* header band */
.mq-hero { padding: 38px 0 70px; background: radial-gradient(60% 120% at 100% -20%, rgba(14, 159, 162, .55), transparent 62%), linear-gradient(135deg, #0b1b3f, #173b9a); color: #fff; position: relative; overflow: hidden; }
.mq-hero::before { content: ""; position: absolute; inset: 0; background: var(--hex-white, none) 0 0 / 56px 98px; opacity: .05; -webkit-mask-image: linear-gradient(115deg, transparent 10%, #000 60%, transparent 95%); mask-image: linear-gradient(115deg, transparent 10%, #000 60%, transparent 95%); pointer-events: none; }
.mq-hero .w-container { position: relative; }
.mq-hero-row { display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; flex-wrap: wrap; }
.mq-hero-copy { max-width: 62ch; }
.mq-kicker { margin: 0 0 8px; font-size: .82rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: #5fe3e5; }
.mq-bn .mq-kicker { letter-spacing: 0; text-transform: none; font-size: 1rem; }
.mq-hero h1 { margin: 0 0 10px; color: #fff; font-size: clamp(2rem, 4.6vw, 3rem); }
.mq-hero .mq-lede { color: #cdd8f2; }
.mq-pills { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; padding: 0; list-style: none; }
.mq-pills li { padding: 6px 14px; border-radius: 999px; background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .2); font-size: .88rem; font-weight: 650; color: #fff; }
.mq-hero .mq-lang { background: rgba(255, 255, 255, .12); border-color: rgba(255, 255, 255, .24); }
.mq-hero .mq-lang button { color: #fff; }
.mq-hero .mq-lang button[aria-pressed="true"] { background: #fff; color: #0b1b3f; }
.mq-hero .mq-banner { background: rgba(255, 246, 226, .96); }
.mq-hero .mq-banner-soft { background: rgba(255, 255, 255, .14); color: #e3ecff; }
.mq-hero .mq-banner-soft a { color: #fff; }
.mq-stage { padding-top: 0; }
.mq-stage .w-container > #mq-app { margin-top: -44px; position: relative; }

/* the dashboard */
.mq-dash { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 18px; padding: 26px; border-radius: 26px; color: #fff; background: radial-gradient(70% 100% at 100% 0, rgba(95, 227, 229, .35), transparent 60%), linear-gradient(135deg, #0e5f7a, #0e9fa2 60%, #12a77a); box-shadow: 0 24px 60px rgba(7, 25, 62, .28); margin-bottom: 18px; }
.mq-eyebrow { margin: 0 0 6px; display: flex; align-items: center; gap: 8px; font-size: .85rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: #d7fffb; }
.mq-bn .mq-eyebrow { letter-spacing: 0; text-transform: none; font-size: 1rem; }
.mq-dash h2 { margin: 0 0 6px; font-size: clamp(1.5rem, 3.4vw, 2.1rem); color: #fff; }
.mq-dash-sub { margin: 0 0 16px; color: #e6fffb; line-height: 1.55; max-width: 46ch; }
.mq-dots { display: flex; gap: 10px; margin: 0 0 20px; }
.mq-dots i { width: 38px; height: 12px; border-radius: 999px; background: rgba(255, 255, 255, .28); }
.mq-dots i.ok { background: #ffe08a; box-shadow: 0 0 0 3px rgba(255, 224, 138, .28); }
.mq-dots i.miss { background: rgba(255, 255, 255, .5); }
.mq-dash-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.mq-dash-side { display: grid; gap: 14px; align-content: center; justify-items: center; text-align: center; padding: 8px; border-radius: 20px; background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .2); }
.mq-flame { display: grid; justify-items: center; gap: 2px; padding-top: 14px; color: rgba(255, 255, 255, .55); }
.mq-flame b { font-size: 2.6rem; line-height: 1; color: #fff; }
.mq-flame span { font-size: .85rem; font-weight: 700; color: #d7fffb; }
.mq-flame.on { color: #ffb347; }
.mq-flame.on svg { filter: drop-shadow(0 0 14px rgba(255, 179, 71, .8)); animation: mq-flicker 2.4s ease-in-out infinite; }
@keyframes mq-flicker { 0%, 100% { transform: scale(1) rotate(0); } 50% { transform: scale(1.08) rotate(-3deg); } }
.mq-minis { display: flex; gap: 22px; padding: 0 12px 14px; }
.mq-minis div { display: grid; gap: 1px; }
.mq-minis b { font-size: 1.35rem; color: #fff; }
.mq-minis span { font-size: .78rem; color: #d7fffb; font-weight: 650; }

.mq-btn.big { min-height: 52px; padding: 0 24px; font-size: 1.05rem; border-radius: 14px; gap: 10px; }
.mq-btn.light { background: #fff; border-color: #fff; color: #0b1b3f; box-shadow: 0 8px 22px rgba(0, 0, 0, .18); }
.mq-btn.light:hover:not(:disabled) { border-color: #fff; box-shadow: 0 12px 28px rgba(0, 0, 0, .24); }
.mq-btn.gold { background: #f2a73b; border-color: #f2a73b; color: #3b2300; }

/* wide cards: the challenge and the certificate */
.mq-wide { display: flex; align-items: center; gap: 18px; padding: 22px 24px; border-radius: 22px; margin-bottom: 18px; color: #fff; }
.mq-wide.challenge { background: radial-gradient(60% 120% at 100% 0, rgba(255, 255, 255, .16), transparent 60%), linear-gradient(135deg, #1b2f73, #5b35d5); box-shadow: 0 18px 44px rgba(53, 38, 140, .3); }
.mq-wide.cert { color: #3b2300; background: linear-gradient(135deg, #fff4d6, #ffe3a1); border: 1px solid #f2d98a; }
.mq-wide-ico { flex: none; display: grid; place-items: center; width: 64px; height: 64px; border-radius: 20px; background: rgba(255, 255, 255, .16); }
.mq-wide.cert .mq-wide-ico { background: rgba(242, 167, 59, .3); }
.mq-wide-body { flex: 1; min-width: 0; }
.mq-wide h2 { margin: 0 0 4px; font-size: 1.35rem; color: inherit; }
.mq-wide p { margin: 0; line-height: 1.5; opacity: .92; }
.mq-wide .mq-best { margin-top: 6px; font-weight: 800; }
@media (max-width: 640px) { .mq-wide { flex-wrap: wrap; } .mq-wide .mq-btn { width: 100%; } .mq-dash { grid-template-columns: 1fr; padding: 20px; } }

/* section headings */
.mq-sec-h { margin: 34px 0 6px; font-size: 1.4rem; }
.mq-sec-d { margin: 0 0 16px; color: var(--mq-muted); max-width: 70ch; line-height: 1.55; }

/* chapter tiles */
.mq-chgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.mq-chtile { display: flex; align-items: center; gap: 14px; padding: 16px; border: 1.5px solid var(--mq-line); border-radius: 20px; background: #fff; font: inherit; color: var(--mq-ink); text-align: left; cursor: pointer; box-shadow: 0 8px 24px rgba(7, 25, 62, .05); transition: transform .16s ease, box-shadow .2s ease, border-color .16s ease; }
.mq-chtile:hover { transform: translateY(-3px); border-color: var(--c); box-shadow: 0 16px 36px rgba(7, 25, 62, .12); }
.mq-chtile:active { transform: scale(.985); }
.mq-chtile:focus-visible { outline: 3px solid var(--mq-brand); outline-offset: 2px; }
.mq-chtile-ico { flex: none; display: grid; place-items: center; width: 54px; height: 54px; border-radius: 16px; background: var(--c); color: #fff; }
.mq-chtile-body { flex: 1; min-width: 0; display: grid; gap: 3px; }
.mq-chtile-body b { font-size: 1.05rem; line-height: 1.3; }
.mq-chtile-body small { color: var(--mq-muted); font-weight: 600; font-size: .84rem; }
.mq-chtile-prog { color: var(--c) !important; }
.mq-bar-track { display: block; height: 6px; border-radius: 999px; background: var(--mq-line); overflow: hidden; margin: 4px 0 2px; }
.mq-bar-track i { display: block; height: 100%; border-radius: 999px; background: var(--c); transition: width .6s ease; }
.mq-chtile > svg:last-child { color: var(--mq-muted); transition: transform .16s ease; }
.mq-chtile:hover > svg:last-child { transform: translateX(3px); color: var(--c); }

/* practice set tiles */
.mq-sets { grid-template-columns: repeat(auto-fill, minmax(124px, 1fr)); }
.mq-set { border-radius: 18px; padding: 14px 14px 12px; box-shadow: 0 6px 18px rgba(7, 25, 62, .05); }
.mq-set small { display: inline-flex; align-items: center; gap: 4px; }
.mq-set.more { place-content: center; justify-items: center; text-align: center; background: #f4f8fc; border-style: dashed; }
.mq-set.more span { color: var(--mq-ink); font-weight: 700; }

/* the two smaller ways to practise */
.mq-duo { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.mq-mini { display: grid; gap: 8px; align-content: start; padding: 20px; border: 1.5px solid var(--mq-line); border-radius: 20px; background: #fff; box-shadow: 0 8px 24px rgba(7, 25, 62, .05); }
.mq-mini h3 { margin: 4px 0 0; font-size: 1.15rem; }
.mq-mini p { margin: 0 0 6px; color: var(--mq-muted); line-height: 1.55; }
.mq-mini .mq-btn { justify-self: start; }
.mq-mini-ico { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; background: #eef4fb; color: var(--mq-brand); }

/* loading */
.mq-loading { display: flex; align-items: center; justify-content: center; gap: 12px; padding: 56px 20px; border-radius: 20px; background: #fff; border: 1px dashed var(--mq-line); color: var(--mq-muted); font-weight: 650; }
.mq-spin { width: 22px; height: 22px; border-radius: 50%; border: 3px solid var(--mq-line); border-top-color: var(--mq-teal); animation: mq-spin .8s linear infinite; }
@keyframes mq-spin { to { transform: rotate(360deg); } }

/* =====================================================================================================
   Sharing: one big button that opens the phone's own share menu, then the networks, then the extras
   ===================================================================================================== */
.mq-share { border-radius: 22px; padding: 22px; }
.mq-share-lead { margin: -4px 0 14px; color: var(--mq-muted); line-height: 1.55; }
.mq-share.site { margin-top: 34px; color: #fff; background: radial-gradient(60% 120% at 100% 0, rgba(95, 227, 229, .3), transparent 60%), linear-gradient(135deg, #0b1b3f, #173b9a); border: 0; box-shadow: 0 20px 50px rgba(11, 27, 63, .3); }
.mq-share.site h2 { color: #fff; }
.mq-share.site .mq-share-lead { color: #cdd8f2; }
.mq-share-grid.nopreview { grid-template-columns: 1fr; }
.mq-share-right { display: grid; gap: 12px; align-content: start; }
.mq-share-main { display: flex; align-items: center; justify-content: center; gap: 10px; width: 100%; min-height: 56px; border: 0; border-radius: 16px; background: linear-gradient(135deg, #1877f2, #4b6bfb); color: #fff; font: inherit; font-size: 1.1rem; font-weight: 800; cursor: pointer; box-shadow: 0 12px 28px rgba(24, 119, 242, .35); transition: transform .14s ease, box-shadow .2s ease; }
.mq-share-main:hover { box-shadow: 0 16px 34px rgba(24, 119, 242, .45); }
.mq-share-main:active { transform: scale(.98); }
.mq-share-main:focus-visible { outline: 3px solid #fff; outline-offset: 3px; box-shadow: 0 0 0 6px var(--mq-brand); }
.mq-share-row { display: flex; flex-wrap: wrap; gap: 8px; }
.mq-share-row .mq-sb { flex: 1 1 130px; justify-content: center; min-height: 46px; }
.mq-share-row.small .mq-sb { flex: 1 1 120px; min-height: 42px; font-size: .88rem; }
.mq-sb { transition: transform .14s ease, filter .14s ease; }
.mq-sb:active { transform: scale(.97); }
.mq-sb.tg { background: #229ed9; } .mq-sb.fb { background: #1877f2; } .mq-sb.wa { background: #1ea952; } .mq-sb.x { background: #111; } .mq-sb.li { background: #0a66c2; }
.mq-sb.plain { background: #eef4fb; color: var(--mq-ink); }
.mq-share.site .mq-sb.plain { background: rgba(255, 255, 255, .14); color: #fff; }
.mq-toast { min-height: 0; margin: 0; padding: 0 14px; max-height: 0; overflow: hidden; border-radius: 12px; background: #0b1b3f; color: #fff; font-weight: 650; line-height: 1.5; opacity: 0; transition: opacity .2s ease, max-height .2s ease, padding .2s ease; }
.mq-toast.on { max-height: 160px; padding: 10px 14px; opacity: 1; }
.mq-share.site .mq-toast { background: #fff; color: #0b1b3f; }
.mq-share-tip { margin: 0; font-size: .84rem; line-height: 1.55; color: var(--mq-muted); }
.mq-share.site .mq-share-tip { color: #b9c8ea; }

@media (prefers-reduced-motion: reduce) { .mq-rise, .mq-flame.on svg, .mq-spin { animation: none; } .mq-chtile, .mq-bar-track i { transition: none; } }

/* Facebook and Messenger first, side by side and big */
.mq-share-duo { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mq-sb.big { min-height: 56px; font-size: 1.05rem; border-radius: 16px; box-shadow: 0 10px 24px rgba(11, 27, 63, .2); }
.mq-sb.big svg { width: 24px; height: 24px; }
.mq-sb.ms { background: linear-gradient(135deg, #00b2ff 0%, #006aff 52%, #a033ff 86%, #ff5280 100%); }
.mq-share-main.secondary { background: #fff; color: var(--mq-ink); border: 2px solid var(--mq-line); box-shadow: none; min-height: 50px; font-size: 1rem; }
.mq-share-main.secondary:hover { border-color: var(--mq-ink); box-shadow: none; }
.mq-share.site .mq-share-main.secondary { background: rgba(255, 255, 255, .12); color: #fff; border-color: rgba(255, 255, 255, .35); }
@media (max-width: 380px) { .mq-share-duo { grid-template-columns: 1fr; } }

/* =====================================================================================================
   Sharing, made compact: smaller buttons everywhere, and on the landing a small card with a turning molecule beside it
   ===================================================================================================== */
.mq-share { padding: 16px; border-radius: 20px; }
.mq-share h2 { font-size: 1.1rem; margin-bottom: 6px; }
.mq-share-lead { margin: 0 0 10px; font-size: .92rem; line-height: 1.5; }
.mq-share-right { gap: 8px; }
.mq-sb.big { min-height: 44px; font-size: .98rem; border-radius: 13px; box-shadow: 0 6px 16px rgba(11, 27, 63, .18); }
.mq-share-row { gap: 6px; }
.mq-share-row .mq-sb { flex: 1 1 96px; min-height: 40px; padding: 0 10px; font-size: .86rem; border-radius: 11px; }
.mq-share-row.small .mq-sb { flex: 1 1 96px; min-height: 36px; font-size: .82rem; }
.mq-share-main.secondary { min-height: 40px; font-size: .86rem; border-radius: 11px; }
.mq-share-row .mq-share-main.secondary { width: auto; flex: 1 1 96px; border-width: 1.5px; padding: 0 10px; gap: 6px; }
.mq-share-tip { margin: 0; font-size: .8rem; color: var(--mq-muted); }
.mq-share-tip summary { cursor: pointer; font-weight: 700; padding: 2px 0; }
.mq-share-tip p { margin: 6px 0 0; line-height: 1.5; }
.mq-share.site .mq-share-tip { color: #b9c8ea; }

.mq-share.site { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, .5fr); gap: 14px; align-items: center; max-width: 860px; margin: 28px auto 0; padding: 18px 18px 18px 20px; }
.mq-share-col { min-width: 0; }
.mq-mol { position: relative; width: 100%; max-width: 230px; aspect-ratio: 1 / 1; justify-self: center; border-radius: 50%; background: radial-gradient(closest-side, rgba(95, 227, 229, .22), rgba(255, 255, 255, .05) 64%, transparent 74%); }
.mq-mol[hidden] { display: none; }
.mq-mol .hero-mol { z-index: 2; }
@media (max-width: 760px) {
  .mq-share.site { grid-template-columns: 1fr; }
  .mq-mol { max-width: 190px; }
}

/* the verified-certificate card on a result */
.mq-card.award { margin: 0 0 22px; border-color: #bfe6d6; background: #f2fbf7; }
.mq-card.award h2 { display: flex; align-items: center; gap: 6px; }
.mq-card.award svg { flex: none; }

/* =====================================================================================================
   The Research Basics look, for MCQ: warm paper, a light header, a coloured banner on every question, chunky tiles
   ===================================================================================================== */
.mq { background: radial-gradient(circle at 1px 1px, rgba(120, 90, 30, .09) 1.2px, transparent 1.4px) 0 0 / 26px 26px, #fffaf1; --mq-line: #e7dfd0; }
.mq-hero { padding: 34px 0 6px; background: none; color: inherit; overflow: visible; }
.mq-hero::before { display: none; }
.mq-hero h1 { color: #0b1b3f; font-size: clamp(1.9rem, 4.4vw, 2.9rem); }
.mq-kicker { color: #b3541e; }
.mq-hero .mq-lede { color: #566480; }
.mq-hero .mq-lang { background: #fff; border: 1.5px solid #e7dfd0; }
.mq-hero .mq-lang button { color: #0b1b3f; }
.mq-hero .mq-lang button[aria-pressed="true"] { background: #0b1b3f; color: #fff; }
.mq-pills li { background: #fff; border: 1.5px solid #e7dfd0; color: #0b1b3f; }
.mq-hero .mq-banner { background: #fff6e2; }
.mq-hero .mq-banner-soft { background: #fff; color: #566480; border: 1px solid #e7dfd0; }
.mq-hero .mq-banner-soft a { color: #1747ca; }
.mq-stage .w-container > #mq-app { margin-top: 0; padding-top: 14px; }
/* inside a question or a result the big header shrinks, so the work is nearer the top */
.mq:has(.mq-bar, .mq-result, .mq-cert) .mq-hero { padding-top: 18px; }
.mq:has(.mq-bar, .mq-result, .mq-cert) .mq-lede, .mq:has(.mq-bar, .mq-result, .mq-cert) .mq-pills { display: none; }
.mq:has(.mq-bar, .mq-result, .mq-cert) .mq-hero h1 { font-size: 1.5rem; }
.mq-banner { color: #7a4a00; }

.mq-q { border: 2px solid #e7dfd0; border-radius: 26px; padding: 0 0 20px; overflow: hidden; box-shadow: 0 18px 44px rgba(7, 25, 62, .08); }
.mq-q > :not(.mq-qbanner) { margin-left: 22px; margin-right: 22px; }
.mq-qbanner { display: flex; align-items: center; gap: 14px; padding: 16px 22px; margin-bottom: 16px; color: #fff; background: radial-gradient(60% 160% at 100% 0, rgba(255, 255, 255, .28), transparent 60%), var(--c, #0e9fa2); }
.mq-qbanner-ico { flex: none; display: grid; place-items: center; width: 48px; height: 48px; border-radius: 15px; background: rgba(255, 255, 255, .24); }
.mq-qbanner small { display: block; font-weight: 700; opacity: .92; font-size: .8rem; }
.mq-qbanner strong { font-size: 1.12rem; line-height: 1.25; }
.mq-q .mq-chip { display: none; }
.mq-q .mq-chip.draft { display: inline-block; }
.mq-stem { font-size: 1.15rem; line-height: 1.55; color: #0b1b3f; }
.mq-opt { border-width: 2px; border-radius: 16px; padding: 14px 16px; }
.mq-opt:hover:not(:disabled) { border-color: var(--c, #0b1b3f); }
.mq-opt .l { background: #f1ece0; }
.mq-opt.picked { border-color: var(--c, #1747ca); background: #fff; }
.mq-opt.picked .l { background: var(--c, #1747ca); }
.mq-progress { height: 10px; background: #efe8d8; }
.mq-progress i { background: linear-gradient(90deg, #0e9fa2, #7b5cf0, #e0457b); }
.mq-chtile, .mq-set { border: 2px solid #e7dfd0; border-radius: 22px; }
.mq-chtile-ico { border-radius: 18px; box-shadow: 0 10px 22px rgba(7, 25, 62, .16); }
.mq-set b { color: #0b1b3f; }
.mq-card { border: 2px solid #e7dfd0; border-radius: 24px; }
.mq-card.award { border-color: #bfe6d6; }
.mq-btn { border-radius: 14px; }
.mq-ring .fg { stroke: var(--mq-good); }
.mq-why { background: #fff; border: 2px solid #e7dfd0; border-left-width: 6px; border-radius: 16px; }
.mq-share:not(.site) { border: 2px solid #e7dfd0; }

.mq-mol-cap { position: absolute; left: -10%; right: -10%; bottom: -26px; margin: 0; text-align: center; font-size: .74rem; line-height: 1.35; color: #b9c8ea; pointer-events: none; }
@media (max-width: 760px) { .mq-share.site { padding-bottom: 46px; } }

/* The page is filled in by a script: keep a screenful of room so the footer is not seen jumping from the top of the page to the bottom. */
.mq-stage { min-height: 100vh; }

#mq-app { min-height: 85vh; }

/* the sections a student keeps getting wrong */
.mq-chtile.weak { border-color: color-mix(in srgb, var(--c) 35%, var(--mq-line)); background: linear-gradient(180deg, #fff8f3, #fff); }

/* badges */
.mq-badges { display: grid; grid-template-columns: repeat(auto-fill, minmax(104px, 1fr)); gap: 10px; }
.mq-badge { display: grid; justify-items: center; gap: 6px; padding: 14px 8px; border: 1.5px solid var(--mq-line); border-radius: 18px; background: #fff; text-align: center; }
.mq-badge small { color: var(--mq-muted); font-weight: 700; font-size: .78rem; line-height: 1.25; }
.mq-badge-ico { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 999px; background: var(--mq-line); color: var(--mq-muted); }
.mq-badge.got { border-color: color-mix(in srgb, var(--mq-brand) 40%, var(--mq-line)); box-shadow: 0 8px 22px rgba(7, 25, 62, .06); }
.mq-badge.got small { color: var(--mq-ink); }
.mq-badge.got .mq-badge-ico { background: var(--mq-brand); color: #fff; }
@media (max-width: 520px) { .mq-badges { grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); } }

/* where a student's progress is kept */
.mq-save-note { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin: 2px 0 18px; padding: 10px 14px; border: 1.5px solid var(--mq-line); border-radius: 14px; background: #fff; color: var(--mq-muted); font-size: .9rem; font-weight: 600; }
.mq-save-note.on { border-color: color-mix(in srgb, var(--mq-good) 35%, var(--mq-line)); color: var(--mq-ink); }
.mq-save-note.on > svg { color: var(--mq-good); }
.mq-save-link { color: var(--mq-brand); font-weight: 800; text-decoration: underline; }

/* a way out of a test that does not score it, and the screen you are on in the bar */
.mq-bar-where { font-weight: 800; color: var(--mq-ink); }
.mq-btn.ghost { background: #fff; border-color: var(--mq-line); color: var(--mq-muted); }
.mq-btn.ghost:hover { border-color: var(--mq-brand); color: var(--mq-brand); }
.mq-btn.ghost svg { width: 15px; height: 15px; }