:root {
  color-scheme: light;
  --mock-bg: var(--aite-canvas, #f4f6f3);
  --mock-panel: var(--aite-surface, #ffffff);
  --mock-ink: var(--aite-ink, #17211f);
  --mock-muted: var(--aite-muted, #64716d);
  --mock-line: var(--aite-line, #d8ded9);
  --mock-teal: #0f766e;
  --mock-shadow: var(--aite-shadow, 0 10px 28px rgba(24, 40, 35, 0.08));
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--mock-bg);
  color: var(--mock-ink);
  font-family: Inter, "Segoe UI", Arial, "Microsoft YaHei", sans-serif;
}

.mock-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: 100vh;
}

.mock-sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 28px 20px;
  border-right: 1px solid var(--mock-line);
  background: #fbfcfa;
}

.mock-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.mock-brand__mark {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 8px;
  background: var(--mock-ink);
  color: #ffffff;
  font-weight: 900;
}

.mock-brand strong,
.mock-brand small {
  display: block;
}

.mock-brand small {
  margin-top: 2px;
  color: var(--mock-muted);
  font-size: 12px;
}

.mock-sidebar__note {
  margin-top: auto;
  padding: 16px;
  border: 1px solid var(--mock-line);
  border-radius: 8px;
  background: var(--mock-panel);
}

.mock-sidebar__note p {
  margin: 8px 0 0;
  color: var(--mock-muted);
  font-size: 13px;
  line-height: 1.6;
}

.mock-main {
  min-width: 0;
  padding: 36px clamp(18px, 4vw, 54px) 54px;
}

.mock-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 28px;
  align-items: end;
  max-width: 1280px;
  margin: 0 auto 28px;
}

.mock-eyebrow {
  margin: 0 0 8px;
  color: var(--mock-teal);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mock-hero h1 {
  margin: 0;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.05;
}

.mock-lead {
  max-width: 760px;
  margin: 14px 0 0;
  color: var(--mock-muted);
  font-size: 16px;
  line-height: 1.7;
}

.mock-rule-card {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 18px;
  border: 1px solid var(--mock-line);
  border-radius: 8px;
  background: var(--mock-panel);
  color: var(--mock-muted);
  font-size: 13px;
  font-weight: 800;
}

.mock-grid {
  display: grid;
  gap: 34px;
  max-width: 1280px;
  margin: 0 auto;
}

.mock-exam-group {
  min-width: 0;
}

.mock-exam-group__heading {
  display: flex;
  gap: 16px;
  align-items: baseline;
  justify-content: space-between;
  margin: 0 0 14px;
}

.mock-exam-group__heading h2,
.mock-exam-group__heading p {
  margin: 0;
}

.mock-exam-group__heading h2 {
  font-size: 22px;
}

.mock-exam-group__heading p {
  color: var(--mock-muted);
  font-size: 14px;
  line-height: 1.55;
  text-align: right;
}

.mock-exam-group__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 16px;
}

.exam-card {
  display: grid;
  grid-template-rows: 8px 1fr;
  min-width: 0;
  min-height: 360px;
  overflow: hidden;
  border: 1px solid var(--mock-line);
  border-radius: 8px;
  background: var(--mock-panel);
  box-shadow: var(--mock-shadow);
}

.exam-card__band {
  background: var(--exam-accent, var(--mock-teal));
}

.exam-card__body {
  display: grid;
  grid-template-rows: auto auto auto 1fr auto;
  gap: 16px;
  padding: 22px;
}

.exam-card__heading,
.exam-card__footer {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  justify-content: space-between;
}

.exam-card h2 {
  margin: 0;
  font-size: 27px;
}

.exam-card__subtitle,
.exam-card__structure,
.exam-card__latest {
  margin: 5px 0 0;
  color: var(--mock-muted);
  font-size: 14px;
  line-height: 1.55;
}

.exam-card__badge {
  flex: 0 0 auto;
  padding: 5px 9px;
  border-radius: 999px;
  background: #edf2f0;
  color: var(--mock-muted);
  font-size: 12px;
  font-weight: 900;
}

.exam-card__badge.is-current {
  background: #e0f2ef;
  color: var(--mock-teal);
}

.exam-card__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.exam-stat {
  min-width: 0;
  padding: 11px;
  border: 1px solid var(--mock-line);
  border-radius: 8px;
  background: #f8faf8;
}

.exam-stat strong,
.exam-stat span {
  display: block;
}

.exam-stat strong {
  font-size: 20px;
}

.exam-stat span {
  margin-top: 2px;
  overflow-wrap: anywhere;
  color: var(--mock-muted);
  font-size: 12px;
}

.exam-card__coverage {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  align-content: start;
}

.exam-card__coverage span {
  padding: 5px 8px;
  border-radius: 999px;
  background: #f1eee8;
  color: var(--mock-muted);
  font-size: 12px;
  font-weight: 700;
}

.exam-card__access {
  color: var(--mock-muted);
  font-size: 12px;
  font-weight: 800;
}

.exam-card__access.is-public {
  color: var(--mock-teal);
}

.exam-card__action {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 9px 14px;
  border: 1px solid var(--mock-ink);
  border-radius: 8px;
  background: var(--mock-ink);
  color: #ffffff;
  font: inherit;
  font-size: 14px;
  font-weight: 900;
  text-decoration: none;
}

.exam-card__action[aria-disabled="true"] {
  border-color: var(--mock-line);
  background: #eef0ed;
  color: var(--mock-muted);
  cursor: not-allowed;
}

.mock-loading,
.mock-error {
  grid-column: 1 / -1;
  padding: 28px;
  border: 1px dashed var(--mock-line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--mock-muted);
}

.mock-error {
  color: #9b2c3b;
}

@media (max-width: 860px) {
  .mock-shell {
    grid-template-columns: 1fr;
  }

  .mock-sidebar {
    position: sticky;
    top: 0;
    z-index: 10;
    gap: 14px;
    padding: 14px 16px;
    border-right: 0;
    border-bottom: 1px solid var(--mock-line);
  }

  .mock-sidebar__note {
    display: none;
  }

  .mock-main {
    padding-top: 26px;
  }

  .mock-hero {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .mock-exam-group__heading {
    display: block;
  }

  .mock-exam-group__heading p {
    margin-top: 6px;
    text-align: left;
  }
}

@media (max-width: 520px) {
  .mock-main {
    padding-inline: 14px;
  }

  .mock-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .exam-card__heading,
  .exam-card__footer {
    align-items: stretch;
    flex-direction: column;
  }

  .exam-card__action {
    width: 100%;
  }
}