/* ============================================================================
   css/mock.css -- custom timed mock (mock.html, js/mock.js, flag 'mock')
   Site tokens from css/variables.css (dark = :root default, light = [data-theme=light]).
   Fixed-size slots (timer, navigator cells, validation line, loading cards) so
   nothing shifts while the clock ticks or answers are typed.
   ============================================================================ */
.mk {
  --mk-ok: #4ade80; --mk-ok-bg: rgba(74, 222, 128, .12);
  --mk-bad: #f87171; --mk-bad-bg: rgba(248, 113, 113, .12);
  --mk-warn: #fbbf24; --mk-warn-bg: rgba(251, 191, 36, .12);
  --mk-easy: #4ade80; --mk-med: #fbbf24; --mk-hard: #fb7185;
  --mk-line: var(--border-light);
  --mk-soft: color-mix(in srgb, var(--accent) 9%, transparent);
  max-width: 820px; margin: 0 auto; padding: 8px 0 72px;
  color: var(--text-primary);
  font-family: var(--font-sans, Inter, system-ui, sans-serif);
}
[data-theme="light"] .mk {
  --mk-ok: #15803d; --mk-ok-bg: rgba(22, 163, 74, .10);
  --mk-bad: #b91c1c; --mk-bad-bg: rgba(220, 38, 38, .08);
  --mk-warn: #b45309; --mk-warn-bg: rgba(217, 119, 6, .10);
  --mk-easy: #15803d; --mk-med: #b45309; --mk-hard: #be123c;
}
.mk *, .mk *::before, .mk *::after { box-sizing: border-box; }

/* ---- cards + type ---- */
.mk-card {
  background: var(--bg-card); border: 1px solid var(--mk-line); border-radius: 16px;
  padding: 26px 28px; margin-bottom: 16px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, .04);
}
.mk-card--load { min-height: 220px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 10px; }
.mk-kicker { font-size: 11.5px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.mk-h1 { font-size: 26px; font-weight: 800; letter-spacing: -.015em; color: var(--text-bright); margin: 4px 0 6px; line-height: 1.2; }
.mk-h2 { font-size: 17px; font-weight: 800; color: var(--text-bright); margin: 0 0 14px; }
.mk-muted { color: var(--text-secondary); font-size: 14.5px; line-height: 1.55; margin: 0; }
.mk-lede { margin-bottom: 4px; }
.mk-dim { color: var(--text-secondary); font-style: italic; }
.mk-label { display: block; font-size: 12px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; color: var(--text-secondary); margin: 0 0 8px; }
.mk-help { font-size: 12.5px; color: var(--text-secondary); margin: 7px 0 0; line-height: 1.45; min-height: 18px; }
.mk-tier { margin: 12px 0 0; font-size: 13.5px; color: var(--text-secondary); padding: 9px 12px; border-radius: 10px; background: var(--mk-soft); }
.mk-tier a { color: var(--accent); font-weight: 700; text-decoration: none; }
.mk-note { margin: 0 0 12px; font-size: 13px; color: var(--mk-warn); background: var(--mk-warn-bg); border-radius: 10px; padding: 9px 12px; }
.mk-spin { width: 28px; height: 28px; border-radius: 50%; border: 3px solid var(--mk-line); border-top-color: var(--accent); animation: mk-spin .8s linear infinite; }
@keyframes mk-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .mk-spin { animation-duration: 2.4s; } }

/* ---- buttons ---- */
.mk-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 40px; padding: 0 16px; border-radius: 10px; border: 1px solid transparent;
  font: 700 14px/1 var(--font-sans, Inter, system-ui, sans-serif); cursor: pointer; text-decoration: none;
  transition: background .15s, border-color .15s, color .15s; white-space: nowrap;
}
.mk-btn:focus-visible, .mk-chip:focus-visible, .mk-seg__b:focus-visible, .mk-opt:focus-visible, .mk-nav__b:focus-visible,
.mk-flag:focus-visible, .mk-link:focus-visible, .mk-switch:focus-visible, .mk-rv__link:focus-visible, .mk-sol summary:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}
.mk-btn--primary { background: var(--accent); color: #fff; }
.mk-btn--primary:hover { background: var(--accent-hover); }
.mk-btn--ghost { background: transparent; color: var(--text-bright); border-color: var(--mk-line); }
.mk-btn--ghost:hover { background: var(--bg-card-hover); }
.mk-btn--sm { min-height: 34px; padding: 0 12px; font-size: 13px; }
.mk-btn--lg { min-height: 48px; padding: 0 24px; font-size: 15.5px; }
.mk-btn--ok { background: var(--mk-ok-bg); color: var(--mk-ok); border-color: color-mix(in srgb, var(--mk-ok) 35%, transparent); }
.mk-btn--bad { background: var(--mk-bad-bg); color: var(--mk-bad); border-color: color-mix(in srgb, var(--mk-bad) 35%, transparent); }
.mk-btn[disabled] { opacity: .45; cursor: not-allowed; }
.mk-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.mk-link { background: none; border: 0; padding: 0; color: var(--accent); font: inherit; font-weight: 700; cursor: pointer; }
.mk-link:hover { text-decoration: underline; }

/* ---- builder ---- */
.mk-sec { margin-top: 22px; }
.mk-sec__h { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.mk-sec__x { display: inline-flex; gap: 14px; font-size: 13px; }
.mk-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.mk-chip {
  display: inline-flex; align-items: center; gap: 8px; min-height: 36px; padding: 0 12px;
  border-radius: 999px; border: 1px solid var(--mk-line); background: transparent;
  color: var(--text-primary); font: 600 13.5px/1 var(--font-sans, Inter, sans-serif); cursor: pointer;
}
.mk-chip:hover { border-color: var(--accent-border); }
.mk-chip__n { font: 600 11.5px/1 var(--font-mono, monospace); color: var(--text-secondary); font-variant-numeric: tabular-nums; min-width: 2ch; text-align: right; }
.mk-chip.is-on { background: var(--mk-soft); border-color: var(--accent); color: var(--text-bright); }
.mk-chip.is-on .mk-chip__n { color: var(--accent); }
.mk-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; }
.mk-seg { display: inline-flex; flex-wrap: wrap; gap: 6px; }
.mk-seg__b {
  min-height: 36px; min-width: 44px; padding: 0 13px; border-radius: 9px; border: 1px solid var(--mk-line);
  background: transparent; color: var(--text-primary); font: 600 13.5px/1 var(--font-sans, Inter, sans-serif); cursor: pointer;
}
.mk-seg__b:hover { border-color: var(--accent-border); }
.mk-seg__b.is-on { background: var(--accent); border-color: var(--accent); color: #fff; }
.mk-seg__b--level.is-on { background: var(--mk-soft); color: var(--accent); border-color: var(--accent); }
.mk-time { display: flex; align-items: center; gap: 8px; }
.mk-time__u { color: var(--text-secondary); font-weight: 600; font-size: 14px; }
.mk-in {
  min-height: 42px; padding: 9px 12px; border-radius: 10px; border: 1px solid var(--mk-line);
  background: var(--bg-secondary); color: var(--text-bright); font: 500 15px/1.4 var(--font-sans, Inter, sans-serif);
}
.mk-in:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.mk-in--num { width: 96px; font-variant-numeric: tabular-nums; font-family: var(--font-mono, monospace); }
.mk-sec--row { display: flex; align-items: flex-start; gap: 12px; }
.mk-switch { position: relative; flex: none; width: 44px; height: 26px; border-radius: 999px; border: 0; background: var(--mk-line); cursor: pointer; padding: 0; margin-top: 1px; transition: background .15s; }
.mk-switch__k { position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0, 0, 0, .25); transition: transform .15s; }
.mk-switch[aria-checked="true"] { background: var(--accent); }
.mk-switch[aria-checked="true"] .mk-switch__k { transform: translateX(18px); }
.mk-switch__l { font-weight: 700; font-size: 14.5px; color: var(--text-bright); cursor: pointer; display: flex; flex-direction: column; }
.mk-switch__l .mk-help { font-weight: 500; margin-top: 2px; min-height: 0; }
.mk-start { margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--mk-line); display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.mk-pool { margin: 0; font-size: 14px; color: var(--text-secondary); flex: 1 1 280px; min-height: 40px; line-height: 1.45; padding-top: 10px; }
.mk-pool b { color: var(--text-bright); }
.mk-hist { margin-top: 24px; }
.mk-hist__l { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.mk-hist__l li { display: grid; grid-template-columns: 56px 1fr auto; gap: 12px; align-items: baseline; font-size: 13.5px; padding: 8px 12px; border-radius: 10px; background: var(--bg-secondary); }
.mk-hist__s { font: 700 14px var(--font-mono, monospace); color: var(--text-bright); }
.mk-hist__t { color: var(--text-primary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.mk-hist__w { color: var(--text-secondary); font-size: 12.5px; white-space: nowrap; }
.mk-gate { text-align: left; }
.mk-prog { width: min(320px, 80%); height: 6px; border-radius: 999px; background: var(--mk-line); overflow: hidden; }
.mk-prog__f { height: 100%; background: var(--accent); transition: width .25s; }

/* ---- run ---- */
.mk-bar {
  position: sticky; top: var(--nav-height, 64px); z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 14px; margin: 0 0 12px; border-radius: 14px;
  background: color-mix(in srgb, var(--bg-card) 94%, transparent); border: 1px solid var(--mk-line);
  box-shadow: 0 4px 14px rgba(0, 0, 0, .06);
}
.mk-bar__l { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.mk-bar__s { font-size: 12.5px; color: var(--text-secondary); white-space: nowrap; }
.mk-timer {
  display: inline-flex; align-items: center; gap: 7px; justify-content: center;
  min-width: 112px; height: 38px; padding: 0 12px; border-radius: 10px;
  font: 700 19px/1 var(--font-mono, monospace); font-variant-numeric: tabular-nums; color: var(--text-bright);
  background: var(--bg-secondary); border: 1px solid var(--mk-line);
}
.mk-timer svg { color: var(--text-secondary); flex: none; }
.mk-timer.is-warn { color: var(--mk-warn); background: var(--mk-warn-bg); }
.mk-timer.is-low { color: var(--mk-bad); background: var(--mk-bad-bg); }
.mk-timer.is-warn svg, .mk-timer.is-low svg { color: currentColor; }
.mk-nav { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 12px; }
.mk-nav__b {
  width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--mk-line); background: var(--bg-card);
  color: var(--text-primary); font: 700 14px/1 var(--font-mono, monospace); cursor: pointer; position: relative; padding: 0;
}
.mk-nav__b:hover { border-color: var(--accent-border); }
.mk-nav__b.is-ans { background: var(--mk-soft); color: var(--accent); border-color: var(--accent-border); }
.mk-nav__b.is-cur { border: 2px solid var(--accent); color: var(--text-bright); }
.mk-nav__b.is-flag::after { content: ""; position: absolute; top: 3px; right: 3px; width: 7px; height: 7px; border-radius: 50%; background: var(--mk-warn); }
.mk-q { min-height: 360px; }
.mk-q__meta { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.mk-q__num { font-size: 12.5px; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; color: var(--text-secondary); margin-right: 4px; }
.mk-pill { font-size: 12px; font-weight: 700; padding: 4px 9px; border-radius: 999px; background: var(--bg-secondary); color: var(--text-primary); }
.mk-pill--easy { color: var(--mk-easy); background: color-mix(in srgb, var(--mk-easy) 12%, transparent); }
.mk-pill--medium { color: var(--mk-med); background: color-mix(in srgb, var(--mk-med) 12%, transparent); }
.mk-pill--hard { color: var(--mk-hard); background: color-mix(in srgb, var(--mk-hard) 12%, transparent); }
.mk-pill--dim { color: var(--text-secondary); }
.mk-flag {
  margin-left: auto; display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 11px; border-radius: 9px;
  border: 1px solid var(--mk-line); background: transparent; color: var(--text-secondary); font: 700 12.5px/1 var(--font-sans, Inter, sans-serif); cursor: pointer;
}
.mk-flag span { min-width: 6ch; text-align: left; }
.mk-flag.is-on { color: var(--mk-warn); border-color: color-mix(in srgb, var(--mk-warn) 45%, transparent); background: var(--mk-warn-bg); }
.mk-q__title { font-size: 20px; font-weight: 800; color: var(--text-bright); margin: 0 0 12px; line-height: 1.3; letter-spacing: -.01em; }
.mk-q__title:focus { outline: none; }
.mk-q__prompt { font-size: 15.5px; line-height: 1.65; color: var(--text-primary); overflow-wrap: anywhere; }
.mk-q__prompt p { margin: 0 0 12px; }
.mk-q__prompt ul, .mk-q__prompt ol, .mk-sol__b ul, .mk-sol__b ol { padding-left: 1.4em; margin: 0 0 12px; }
.mk-sol__b p { margin: 0 0 10px; }
.mk-q__prompt .katex-display, .mk-sol__b .katex-display { overflow-x: auto; overflow-y: hidden; padding: 2px 0; }
.mk-q__prompt table, .mk-sol__b table { display: block; overflow-x: auto; max-width: 100%; border-collapse: collapse; font-size: 14px; }
.mk-q__prompt th, .mk-q__prompt td, .mk-sol__b th, .mk-sol__b td { border: 1px solid var(--mk-line); padding: 5px 9px; }
.mk-q__prompt pre, .mk-sol__b pre { overflow-x: auto; max-width: 100%; background: var(--bg-secondary); padding: 10px 12px; border-radius: 10px; font-size: 13px; }
.mk-q__ans { margin-top: 18px; padding-top: 18px; border-top: 1px dashed var(--mk-line); }
.mk-opts { display: grid; gap: 8px; }
.mk-opt {
  display: flex; align-items: flex-start; gap: 12px; width: 100%; text-align: left; padding: 11px 14px; border-radius: 12px;
  border: 1px solid var(--mk-line); background: transparent; color: var(--text-primary); cursor: pointer;
  font: 500 14.5px/1.5 var(--font-sans, Inter, sans-serif);
}
.mk-opt:hover { border-color: var(--accent-border); background: var(--bg-card-hover); }
.mk-opt__k { flex: none; width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; font: 800 13px/1 var(--font-mono, monospace); background: var(--bg-secondary); color: var(--text-secondary); }
.mk-opt__t { min-width: 0; overflow-wrap: anywhere; padding-top: 2px; }
.mk-opt.is-on { border-color: var(--accent); background: var(--mk-soft); }
.mk-opt.is-on .mk-opt__k { background: var(--accent); color: #fff; }
.mk-in--ans { width: 100%; max-width: 420px; font-family: var(--font-mono, monospace); }
.mk-valid { min-height: 20px; font-size: 12.5px; color: var(--mk-warn); margin-top: 5px; }
.mk-instr { font-size: 13px; color: var(--text-secondary); line-height: 1.5; margin-top: 2px; }
.mk-instr--dim { opacity: .85; }
.mk-instr code, .mk-rv code { font: 500 12.5px var(--font-mono, monospace); background: var(--bg-secondary); padding: 1px 5px; border-radius: 5px; }
.mk-ta { width: 100%; min-height: 160px; resize: vertical; font: 400 14.5px/1.55 var(--font-mono, monospace); }
.mk-part { padding: 14px 0; border-bottom: 1px solid var(--mk-line); }
.mk-part:first-child { padding-top: 0; }
.mk-part:last-child { border-bottom: 0; padding-bottom: 0; }
.mk-part__h { display: flex; align-items: center; gap: 9px; font-weight: 800; font-size: 14px; color: var(--text-bright); margin-bottom: 6px; }
.mk-part__n { flex: none; width: 22px; height: 22px; border-radius: 7px; display: grid; place-items: center; font: 800 12px/1 var(--font-mono, monospace); background: var(--mk-soft); color: var(--accent); }
.mk-part__p { font-size: 14.5px; line-height: 1.6; margin-bottom: 10px; overflow-wrap: anywhere; }
.mk-foot { margin-top: 12px; min-height: 64px; }
.mk-foot__in { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.mk-foot__c { font-size: 13px; color: var(--text-secondary); text-align: center; flex: 1; white-space: nowrap; }
.mk-confirm { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--accent-border); background: var(--mk-soft); }
.mk-confirm__t { font-weight: 700; font-size: 14px; color: var(--text-bright); }
.mk-confirm__x { display: block; margin-top: 6px; font-size: 12.5px; font-weight: 600; color: var(--text-secondary); }
.mk-confirm__b { display: flex; gap: 8px; }
.mk-keys { margin: 14px 0 0; font-size: 12px; color: var(--text-secondary); line-height: 1.8; }
.mk-keys kbd { font: 600 11px var(--font-mono, monospace); padding: 1px 6px; border-radius: 5px; border: 1px solid var(--mk-line); background: var(--bg-card); }

/* ---- results ---- */
.mk-hero__row { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; margin-top: 8px; }
.mk-score { display: flex; align-items: baseline; gap: 6px; }
.mk-score__v { font: 800 56px/1 var(--font-sans, Inter, sans-serif); color: var(--text-bright); font-variant-numeric: tabular-nums; letter-spacing: -.03em; }
.mk-score__d { font: 700 24px/1 var(--font-sans, Inter, sans-serif); color: var(--text-secondary); }
.mk-hero__stats { display: flex; gap: 26px; flex-wrap: wrap; }
.mk-stat { display: flex; flex-direction: column; gap: 4px; }
.mk-stat__v { font: 800 20px/1 var(--font-mono, monospace); color: var(--text-bright); font-variant-numeric: tabular-nums; }
.mk-stat__k { font-size: 12px; color: var(--text-secondary); }
.mk-pend { margin: 16px 0 0; font-size: 13.5px; color: var(--mk-warn); }
.mk-recnote { margin: 10px 0 0; font-size: 13px; color: var(--text-secondary); line-height: 1.5; min-height: 20px; }
.mk-topics { display: grid; gap: 10px; }
.mk-tr { display: grid; grid-template-columns: minmax(110px, 190px) 1fr auto; align-items: center; gap: 14px; font-size: 14px; }
.mk-tr__n { font-weight: 700; color: var(--text-bright); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mk-tr__bar { height: 8px; border-radius: 999px; background: var(--bg-secondary); overflow: hidden; }
.mk-tr__bar span { display: block; height: 100%; background: var(--accent); border-radius: 999px; }
.mk-tr__v { font: 700 13.5px var(--font-mono, monospace); color: var(--text-primary); white-space: nowrap; font-variant-numeric: tabular-nums; }
.mk-tr__v .mk-dim { font: 500 12px var(--font-sans, Inter, sans-serif); }
.mk-rvl { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.mk-rv { border: 1px solid var(--mk-line); border-radius: 12px; padding: 14px 16px; }
.mk-rv.is-open { border-color: color-mix(in srgb, var(--mk-warn) 45%, transparent); }
.mk-rv__h { display: flex; align-items: flex-start; gap: 12px; }
.mk-rv__n { flex: none; width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; font: 800 13px/1 var(--font-mono, monospace); background: var(--bg-secondary); color: var(--text-secondary); }
.mk-rv__t { flex: 1; min-width: 0; }
.mk-rv__title { font-weight: 700; font-size: 14.5px; color: var(--text-bright); line-height: 1.35; overflow-wrap: anywhere; }
.mk-rv__m { display: flex; flex-wrap: wrap; gap: 6px; font-size: 12.5px; color: var(--text-secondary); margin-top: 3px; }
.mk-dot { opacity: .6; }
.mk-d--easy { color: var(--mk-easy); } .mk-d--medium { color: var(--mk-med); } .mk-d--hard { color: var(--mk-hard); }
.mk-badge { flex: none; display: inline-flex; align-items: center; gap: 5px; font-size: 12px; font-weight: 800; padding: 5px 9px; border-radius: 999px; white-space: nowrap; }
.mk-badge.is-ok { color: var(--mk-ok); background: var(--mk-ok-bg); }
.mk-badge.is-bad { color: var(--mk-bad); background: var(--mk-bad-bg); }
.mk-badge.is-none { color: var(--text-secondary); background: var(--bg-secondary); }
.mk-badge.is-pend { color: var(--mk-warn); background: var(--mk-warn-bg); }
.mk-rv__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }
.mk-rv__ans { font-size: 14px; line-height: 1.55; min-width: 0; overflow-wrap: anywhere; margin-top: 12px; }
.mk-rv__grid .mk-rv__ans { margin-top: 0; }
.mk-rv__k { font-size: 11.5px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; color: var(--text-secondary); margin-bottom: 4px; }
.mk-parts-ans { margin: 0; padding-left: 0; list-style: none; display: grid; gap: 4px; }
.mk-parts-ans li { display: block; padding-left: 2.4ch; text-indent: -2.4ch; }
.mk-parts-ans li > * { text-indent: 0; }
.mk-parts-ans li::before { content: attr(value) "."; display: inline-block; width: 2.4ch; text-indent: 0; font: 700 12px var(--font-mono, monospace); color: var(--text-secondary); }
.mk-parts-ans .mk-mini { margin-right: 6px; }
.mk-mini { display: inline-grid; vertical-align: -2px; place-items: center; width: 16px; height: 16px; border-radius: 50%; flex: none; }
.mk-mini svg { width: 10px; height: 10px; }
.mk-mini.is-ok { color: var(--mk-ok); background: var(--mk-ok-bg); }
.mk-mini.is-bad { color: var(--mk-bad); background: var(--mk-bad-bg); }
.mk-self-ans { white-space: pre-wrap; font: 400 13.5px/1.5 var(--font-mono, monospace); background: var(--bg-secondary); padding: 8px 10px; border-radius: 8px; max-height: 220px; overflow: auto; }
.mk-sol { margin-top: 12px; border-radius: 10px; background: var(--bg-secondary); }
.mk-sol summary { cursor: pointer; padding: 10px 12px; font-weight: 700; font-size: 13.5px; color: var(--accent); list-style: none; border-radius: 10px; }
.mk-sol summary::-webkit-details-marker { display: none; }
.mk-sol summary::before { content: "+"; display: inline-block; width: 1.2em; font-family: var(--font-mono, monospace); }
.mk-sol[open] summary::before { content: "-"; }
.mk-sol__b { padding: 0 14px 12px; font-size: 14.5px; line-height: 1.65; overflow-wrap: anywhere; }
.mk-mark { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.mk-mark__q { font-size: 13px; color: var(--text-secondary); margin-right: 4px; }
.mk-rv__link { display: inline-flex; align-items: center; gap: 5px; margin-top: 10px; font-size: 13px; font-weight: 700; color: var(--accent); text-decoration: none; }
.mk-rv__link:hover { text-decoration: underline; }

/* ---- phones ---- */
@media (max-width: 640px) {
  .mk { padding-top: 0; }
  .mk-card { padding: 18px 16px; border-radius: 14px; }
  .mk-h1 { font-size: 22px; }
  .mk-grid { grid-template-columns: 1fr; }
  .mk-start { flex-direction: column; align-items: stretch; }
  .mk-pool { flex: none; min-height: 0; padding-top: 0; }
  .mk-start .mk-btn--lg { width: 100%; }
  .mk-hist__l li { grid-template-columns: 48px 1fr; }
  .mk-hist__w { grid-column: 2; }
  .mk-bar { padding: 8px 10px; gap: 8px; border-radius: 12px; }
  .mk-bar__s { display: none; }
  .mk-timer { min-width: 96px; font-size: 17px; height: 36px; padding: 0 9px; }
  .mk-nav__b { width: 36px; height: 36px; font-size: 13px; }
  .mk-q { min-height: 300px; }
  .mk-q__title { font-size: 18px; }
  .mk-q__prompt { font-size: 15px; }
  .mk-flag span { display: none; }
  .mk-q__meta .mk-pill--dim { display: none; }
  .mk-foot__c { font-size: 12px; }
  .mk-confirm__b { width: 100%; }
  .mk-confirm__b .mk-btn { flex: 1; }
  .mk-keys { display: none; }
  .mk-score__v { font-size: 46px; }
  .mk-hero__row { gap: 18px; }
  .mk-hero__stats { gap: 18px; }
  .mk-tr { grid-template-columns: minmax(90px, 120px) 1fr auto; gap: 10px; font-size: 13px; }
  .mk-rv { padding: 12px; }
  .mk-rv__h { flex-wrap: wrap; }
  .mk-rv__t { flex-basis: calc(100% - 40px); }
  .mk-badge { margin-left: 40px; }
  .mk-rv__grid { grid-template-columns: 1fr; }
  .mk-actions .mk-btn { flex: 1 1 auto; }
}