feat(exam-prep F9): пробный экзамен — setup/active/result + таймер + балл по сетке + серверный чекер

frontend/css/exam-prep.css

@@ -612,6 +612,102 @@
   border-radius: 10px;
 }
 
+/* ═══════════════════════════════════════════════════════════════
+   Mock exam view (`mk-*`) — used by exam-prep-mock.html
+   ═══════════════════════════════════════════════════════════════ */
+
+/* Setup */
+.mk-setup p { font-size: .92rem; line-height: 1.7; }
+.mk-source {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
+  gap: 14px;
+  margin: 18px 0 4px;
+}
+.mk-source-card {
+  border: 1.5px solid var(--border-h);
+  border-radius: 12px;
+  padding: 14px 16px;
+  cursor: pointer;
+  transition: all .15s;
+}
+.mk-source-card:hover { border-color: var(--violet); }
+.mk-source-card.mk-source-active {
+  border-color: var(--violet);
+  background: rgba(155,93,229,.06);
+}
+.mk-source-head {
+  display: flex; align-items: center; gap: 10px;
+  font-family: 'Manrope', sans-serif; font-size: .95rem; font-weight: 700;
+  color: var(--text); margin-bottom: 10px;
+}
+.mk-source-head svg { width: 18px; height: 18px; color: var(--violet); }
+.mk-source-body label {
+  display: flex; align-items: center; gap: 8px;
+  font-size: .85rem; color: var(--text-2);
+}
+.mk-input {
+  width: 80px;
+  padding: 6px 10px;
+  border: 1.5px solid var(--border-h);
+  border-radius: 7px;
+  background: var(--surface); color: var(--text);
+  font-family: 'Manrope', sans-serif; font-size: .9rem; font-weight: 600;
+}
+.mk-input:focus { outline: none; border-color: var(--violet); }
+.mk-source-hint {
+  font-size: .78rem; color: var(--text-3); margin-top: 6px;
+}
+.mk-start-row { margin-top: 16px; }
+
+/* Active phase: sticky bar */
+.mk-bar {
+  position: sticky; top: 0; z-index: 50;
+  display: flex; align-items: center; gap: 14px;
+  background: var(--surface);
+  border: 1.5px solid var(--border);
+  border-radius: 12px;
+  padding: 12px 18px;
+  margin-bottom: 18px;
+  flex-wrap: wrap;
+}
+.mk-bar-info {
+  display: flex; flex-direction: column; gap: 2px;
+  flex: 1; min-width: 180px;
+}
+.mk-bar-source {
+  font-family: 'Unbounded', sans-serif; font-size: .9rem; font-weight: 800;
+  letter-spacing: -.01em;
+}
+.mk-bar-count {
+  font-size: .78rem; color: var(--text-2);
+}
+.mk-timer {
+  font-family: 'Unbounded', sans-serif;
+  font-size: 1.6rem; font-weight: 800;
+  color: var(--text);
+  font-variant-numeric: tabular-nums;
+  letter-spacing: -.01em;
+}
+.mk-timer.mk-timer-warn { color: #F8961E; }
+.mk-timer.mk-timer-zero { color: #E63946; animation: mk-pulse .8s infinite; }
+@keyframes mk-pulse {
+  0%, 100% { opacity: 1; }
+  50%      { opacity: .4; }
+}
+.mk-finish-btn { white-space: nowrap; }
+
+.mk-tasks { }
+
+/* Result phase */
+.mk-result-stats { margin-bottom: 18px; }
+.mk-breakdown-title {
+  font-family: 'Unbounded', sans-serif;
+  font-size: 1.05rem; font-weight: 800;
+  margin: 26px 0 12px;
+  letter-spacing: -.01em;
+}
+
 /* ── Mobile tweaks ─────────────────────────────────────────────── */
 @media (max-width: 640px) {
   .ep-wrap   { padding: 20px 16px 60px; }