@layer components {
  exam-timer { display: contents; }

  :is(.exam-start, .exam-taking, .exam-results) {
    display: grid;
    gap: var(--space-8);

    a { color: inherit; }

    h1, h2, h3 { margin: 0; font-weight: 400; }

    .sr-only {
      position: absolute;
      inline-size: 1px;
      block-size: 1px;
      overflow: hidden;
      clip-path: inset(50%);
      white-space: nowrap;
    }

    .button-wipe {
      position: relative;
      isolation: isolate;
      overflow: hidden;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: var(--space-2);
      min-block-size: 3rem;
      padding-block: 0;
      padding-inline: var(--space-5);
      border: 1px solid var(--color-border-strong);
      border-radius: var(--radius-sharp);
      background: transparent;
      color: var(--color-text);
      font-family: var(--font-mono);
      font-size: var(--text-xs);
      font-weight: 500;
      letter-spacing: var(--tracking-caps);
      text-transform: uppercase;
      text-decoration: none;
      white-space: nowrap;
      cursor: pointer;
      transition: border-color var(--duration-wipe) var(--ease-in-out);

      &::before {
        content: "";
        position: absolute;
        inset-block: 0;
        inset-inline-start: 0;
        z-index: -1;
        inline-size: calc(100% + var(--wipe-feather));
        background: linear-gradient(90deg, var(--color-wipe-fill) calc(100% - var(--wipe-feather)), transparent);
        transform: translateX(-100%);
        transition: transform var(--duration-wipe) var(--ease-in-out);
      }

      &:hover, &:focus-visible { background: transparent; border-color: var(--color-wipe-border); }

      &:hover::before, &:focus-visible::before { transform: translateX(0); }

      &:disabled {
        opacity: 0.38;
        cursor: default;
        pointer-events: none;
      }
    }

    .cta {
      position: relative;
      isolation: isolate;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: var(--space-3);
      min-block-size: 3rem;
      padding-block: 0;
      padding-inline: var(--space-5);
      border: 0;
      border-radius: 0;
      background: none;
      color: var(--color-on-gradient);
      font-family: var(--font-mono);
      font-size: var(--text-xs);
      font-weight: 500;
      letter-spacing: var(--tracking-caps);
      text-transform: uppercase;
      text-decoration: none;
      white-space: nowrap;
      cursor: pointer;
      filter:
        drop-shadow(0 2px 3px color-mix(in oklch, var(--color-accent) 0%, transparent))
        drop-shadow(0 6px 14px color-mix(in oklch, var(--color-accent) 0%, transparent));
      transition: filter var(--duration-wipe) var(--ease-in-out);

      &::before {
        content: "";
        position: absolute;
        inset: 0;
        z-index: -1;
        border-radius: var(--radius-sharp);
        background: var(--logo-gradient);
      }

      &::after {
        content: "";
        position: absolute;
        inset: -0.375rem;
        border: 1.5px solid var(--color-accent);
        pointer-events: none;
        mask:
          linear-gradient(#000 0 0) top left / var(--bracket) var(--bracket) no-repeat,
          linear-gradient(#000 0 0) top right / var(--bracket) var(--bracket) no-repeat,
          linear-gradient(#000 0 0) bottom left / var(--bracket) var(--bracket) no-repeat,
          linear-gradient(#000 0 0) bottom right / var(--bracket) var(--bracket) no-repeat;
        transition: scale var(--duration-wipe) var(--ease-in-out);
      }

      &:hover, &:focus-visible {
        background: none;
        filter:
          drop-shadow(0 2px 3px color-mix(in oklch, var(--color-accent) 10%, transparent))
          drop-shadow(0 6px 14px color-mix(in oklch, var(--color-accent) 16%, transparent));
      }
    }

    @media (prefers-reduced-motion: no-preference) {
      .cta:hover::after, .cta:focus-visible::after { scale: 1.04 1.13; }
    }

    .button-wipe .glyph, .cta .glyph { inline-size: 0.875rem; block-size: 0.875rem; }

    .card, .panel {
      position: relative;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sharp);
      background: var(--color-panel);
      color: var(--color-text);
      box-shadow:
        0 1px 2px var(--color-panel-shadow-near),
        0 6px 18px var(--color-panel-shadow-far);
    }

    .has-rule::before {
      content: "";
      position: absolute;
      inset: -1px -1px auto;
      block-size: 2px;
      border-radius: var(--radius-sharp) var(--radius-sharp) 0 0;
      background: var(--logo-gradient-rule);
    }

    .section-index {
      display: flex;
      flex-wrap: wrap;
      align-items: baseline;
      gap: var(--space-2) var(--space-4);
      font-family: var(--font-section);
      font-size: var(--text-section);
      font-weight: 400;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      color: var(--color-text-muted);

      h2 { font: inherit; }

      .index-rule {
        flex: 1;
        align-self: center;
        min-inline-size: var(--space-6);
        block-size: 1px;
        background: var(--color-border);
      }
    }

    .figure {
      display: inline-block;
      font-family: var(--font-display);
      font-weight: 300;
      line-height: 1;
      letter-spacing: -0.03em;
    }

    .figure-unit { font-size: 0.5em; margin-inline-start: 0.04em; color: var(--color-text-muted); }

    .glyph {
      flex: none;
      inline-size: 14px;
      block-size: 14px;
    }

    .svg-sprite { position: absolute; inline-size: 0; block-size: 0; overflow: hidden; }

    :is(.exam-navigator ol, .nav-legend, .focus-list, .jump-grid, .jump-legend, .exam-review) {
      padding: 0;
      list-style: none;
    }

    .quiz-top {
      display: grid;
      gap: var(--space-3);
      justify-items: start;
    }

    .quiz-eyebrow { margin-block-start: var(--space-3); }

    .quiz-title {
      font-size: var(--text-3xl);
      font-weight: 300;
      letter-spacing: -0.02em;
      line-height: var(--line-height-tight);
    }

    .crumb {
      display: inline-flex;
      gap: var(--space-2);
      text-decoration: none;

      &:hover { color: var(--color-text); }
    }

    .stem {
      max-inline-size: var(--measure);
      font-size: var(--text-lg);
      line-height: 1.55;
    }

    .timer { display: grid; gap: var(--space-1); align-content: start; }

    .timer-value {
      font-family: var(--font-mono);
      font-size: var(--text-xl);
      line-height: 1.1;
      white-space: nowrap;
    }

    .verdict-tag {
      display: inline-flex;
      align-items: center;
      justify-self: start;
      gap: var(--space-2);
      padding: var(--space-1) var(--space-3);
      border: 1px solid;
      border-radius: var(--radius-sharp);
      font-family: var(--font-mono);
      font-size: var(--text-xs);
      letter-spacing: var(--tracking-caps);
      text-transform: uppercase;
      white-space: nowrap;

      &.is-pass { color: var(--color-accent); border-color: var(--color-wipe-border); }

      &.is-below { color: var(--color-incorrect); border-color: color-mix(in oklch, var(--color-incorrect) 45%, transparent); }
    }

    .facts {
      display: flex;
      flex-wrap: wrap;
      gap: var(--space-3) var(--space-6);

      > div { display: grid; gap: var(--space-1); }

      dd { font-size: var(--text-lg); }
    }

    .start-section { display: grid; gap: var(--space-4); min-inline-size: 0; }

    .data-table {
      inline-size: 100%;
      border-collapse: collapse;

      th {
        font-weight: 400;
        padding: var(--space-3) var(--space-5);
        border-block-end: 1px solid var(--color-border);
        text-align: start;
        white-space: nowrap;
      }

      td {
        padding: var(--space-4) var(--space-5);
        border-block-end: 1px solid var(--color-border);
        vertical-align: middle;
      }

      tbody tr:last-child td { border-block-end: 0; }

      tbody tr:nth-child(even) td { background: color-mix(in oklch, var(--color-text) 2.5%, transparent); }

      .num { text-align: end; font-variant-numeric: tabular-nums; white-space: nowrap; }

      .end { text-align: end; }

      a { text-decoration: none; }

      a:hover { text-decoration: underline; text-underline-offset: 3px; }
    }

    .table-card { padding: 0; overflow: hidden; }

    .code {
      display: inline-block;
      min-inline-size: 2.25rem;
      font-family: var(--font-mono);
      font-size: var(--text-sm);
      color: var(--color-text-muted);
    }

    @media (max-width: 32rem) {
      gap: var(--space-5);

      .quiz-title { font-size: var(--text-2xl); }

      .stem { font-size: var(--text-base); }

      .timer-value { font-size: var(--text-lg); }

      .data-table :is(th, td) { padding-inline: var(--space-3); }
    }
  }

  .exam-start {
    .start-row {
      display: grid;
      gap: var(--space-5);
    }

    .action-card {
      display: grid;
      align-content: space-between;
      gap: var(--space-5);
      padding: var(--space-6);
      background: color-mix(in oklch, var(--color-accent) 7%, var(--color-panel));

      .timer { gap: var(--space-3); }

      .cta, form:has(.cta) { justify-self: start; }
    }

    .action-meta {
      display: flex;
      flex-wrap: wrap;
      gap: var(--space-1) var(--space-4);
      color: var(--color-text-muted);

      span + span::before { content: "·"; margin-inline-end: var(--space-4); color: var(--color-text-subtle); }
    }

    .action-time {
      display: flex;
      flex-wrap: wrap;
      align-items: baseline;
      gap: var(--space-3);

      .timer-value { font-size: var(--text-4xl); font-family: var(--font-display); font-weight: 300; }
    }

    .readiness {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      padding: 0;
    }

    .metric {
      display: grid;
      align-content: start;
      gap: var(--space-3);
      padding: var(--space-6);
      min-inline-size: 0;

      & + & { border-inline-start: 1px solid var(--color-border); }

      .figure { font-size: var(--text-4xl); }
    }

    .metric-support { font-size: var(--text-sm); color: var(--color-text-muted); }

    .intro-card {
      display: grid;
      gap: var(--space-6);
      padding: var(--space-6);
    }

    .intro {
      max-inline-size: var(--measure);
      font-size: var(--text-lg);
      line-height: var(--line-height-relaxed);
      color: var(--color-text-muted);
    }

    .spec {
      display: flex;
      flex-wrap: wrap;
      gap: var(--space-5) var(--space-8);

      > div { display: grid; gap: var(--space-2); }

      .figure { font-size: var(--text-4xl); }

      &.mini { gap: var(--space-4) var(--space-6); }

      &.mini .figure { font-size: var(--text-2xl); }
    }

    .start-cols {
      display: grid;
      gap: var(--space-8);
      align-items: start;
    }

    .narrow-only { display: none; }

    .delta { color: var(--color-text-muted); }

    .result-word {
      display: inline-flex;
      align-items: center;
      gap: var(--space-2);

      &.is-pass { color: var(--color-accent); }

      &.is-below { color: var(--color-text-muted); }

      .glyph { inline-size: 0.875rem; block-size: 0.875rem; }

      &.is-below .glyph { color: var(--color-incorrect); }
    }

    .link-quiet {
      color: var(--color-text-muted);
      font-size: var(--text-sm);

      &:hover { color: var(--color-text); }
    }

    .focus-list {
      padding: 0;

      li + li { border-block-start: 1px solid var(--color-border); }

      a {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        gap: var(--space-1) var(--space-4);
        padding: var(--space-4) var(--space-5);
        text-decoration: none;

        &:hover { background: var(--color-hover-wash); }
      }
    }

    .focus-name { font-weight: 500; }

    .focus-figures {
      grid-column: 1 / -1;
      display: flex;
      flex-wrap: wrap;
      gap: var(--space-1) var(--space-5);
      font-size: var(--text-sm);
      color: var(--color-text-muted);

      b { font-weight: 500; color: var(--color-text); font-variant-numeric: tabular-nums; }
    }

    @media (min-width: 64rem) {
      .start-row, .start-cols { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }
    }

    @media (max-width: 32rem) {
      .readiness { grid-template-columns: repeat(2, minmax(0, 1fr)); }

      .readiness .metric:first-child { grid-column: 1 / -1; border-block-end: 1px solid var(--color-border); }

      .readiness .metric:nth-child(2) { border-inline-start: 0; }

      .readiness .metric:not(:first-child) .figure { font-size: var(--text-3xl); }

      .history-table .wide-only, .history-table .result-word .glyph { display: none; }

      .history-table .narrow-only { display: block; font-size: var(--text-xs); }

      .history-table :is(th, td) { padding-inline: var(--space-2); }

      .action-card, .intro-card, .metric { padding: var(--space-5); }

      .action-card :is(.cta, form:has(.cta)) { inline-size: 100%; }

      .action-time .timer-value { font-size: var(--text-3xl); }
    }
  }

  .exam-taking {
    gap: var(--space-6);

    .exam-layout {
      display: grid;
      gap: var(--space-6);
      align-items: start;
    }

    .exam-main { display: grid; gap: var(--space-6); min-inline-size: 0; }

    .exam-rail { display: none; }

    .exam-head {
      display: flex;
      flex-wrap: wrap;
      align-items: flex-end;
      gap: var(--space-4) var(--space-5);
      padding-block-end: var(--space-4);
      border-block-end: 1px solid var(--color-border-strong);

      .timer { padding: var(--space-2) var(--space-3); }
    }

    .exam-qno {
      display: grid;
      gap: var(--space-1);
      margin-inline-end: auto;
    }

    .exam-qno-line {
      display: flex;
      align-items: baseline;
      gap: var(--space-3);
    }

    .exam-number {
      font-family: var(--font-mono);
      font-size: var(--text-3xl);
      line-height: 1;
      letter-spacing: -0.04em;
    }

    .timer-label { display: inline-flex; align-items: center; gap: var(--space-2); }

    .when-low { display: none; gap: var(--space-2); align-items: center; }

    .timer-box {
      transition:
        background-color var(--duration-wipe) var(--ease-in-out),
        box-shadow var(--duration-wipe) var(--ease-in-out);
    }

    exam-timer[data-low] & {
      .when-low { display: inline-flex; }

      .when-calm { display: none; }

      .timer-label { color: light-dark(oklch(0.46 0.12 82), var(--accent-dark)); }

      .timer-box {
        background: color-mix(in oklch, var(--color-accent) 10%, var(--color-panel));
        box-shadow: inset 2px 0 0 var(--color-accent);
      }
    }

    .flag-toggle {
      display: inline-flex;
      align-items: center;
      gap: var(--space-2);
      min-block-size: 2.5rem;
      padding-block: 0;
      padding-inline: var(--space-4);
      border: 1px solid var(--color-border-strong);
      border-radius: var(--radius-sharp);
      background: transparent;
      color: var(--color-text-muted);
      font-family: var(--font-mono);
      font-size: var(--text-xs);
      font-weight: 400;
      letter-spacing: var(--tracking-caps);
      text-transform: uppercase;
      white-space: nowrap;
      cursor: pointer;
      transition:
        background-color var(--duration-fill) var(--ease-out),
        border-color var(--duration-fill) var(--ease-out),
        color var(--duration-fill) var(--ease-out);

      &:hover { color: var(--color-text); background: var(--color-hover-wash); }

      .flag-on, .when-flagged { display: none; }

      &[aria-pressed="true"] {
        border-color: var(--color-wipe-border);
        background: var(--color-accent-faint);
        color: var(--color-text);

        .flag-on { display: block; color: var(--color-accent); }

        .when-flagged { display: inline; }

        .flag-off, .when-unflagged { display: none; }
      }
    }

    .icon-button {
      display: inline-grid;
      place-items: center;
      inline-size: 2.5rem;
      block-size: 2.5rem;
      padding: 0;
      border: 1px solid var(--color-border-strong);
      border-radius: var(--radius-sharp);
      background: transparent;
      color: var(--color-text-muted);
      cursor: pointer;

      &:hover { background: var(--color-hover-wash); color: var(--color-text); }
    }

    .exam-form {
      display: grid;
      gap: var(--space-4);

      legend.stem {
        margin-block-end: var(--space-5);
        padding: 0;

        &:has(+ .statements) { margin-block-end: var(--space-4); }
      }
    }

    .choices {
      --choice-bg: var(--color-panel);
      display: grid;
      gap: var(--space-3);
      min-inline-size: 0;
      padding: 0;
      border: 0;
    }

    .choice {
      position: relative;
      display: grid;
      grid-template-columns: 2rem minmax(0, 1fr);
      gap: var(--space-4);
      align-items: start;
      padding: var(--space-4);
      border: 1px solid var(--color-border-strong);
      border-radius: var(--radius-sharp);
      background: var(--choice-bg);
      color: inherit;
      text-align: start;
      cursor: pointer;
      transition:
        border-color var(--duration-fill) var(--ease-out),
        background-color var(--duration-fill) var(--ease-out),
        box-shadow var(--duration-fill) var(--ease-out);

      &:hover { background: color-mix(in oklch, var(--color-text) 4%, var(--choice-bg)); }

      &[aria-pressed="true"] {
        border-color: var(--color-text);
        box-shadow: inset 0 0 0 1px var(--color-text);

        .choice-letter { border-color: var(--color-text); background: var(--color-text); color: var(--choice-bg); }
      }
    }

    .choice-letter {
      display: grid;
      place-items: center;
      inline-size: 2rem;
      block-size: 2rem;
      border: 1px solid var(--color-border-strong);
      border-radius: var(--radius-sharp);
      font-family: var(--font-mono);
      font-size: var(--text-sm);
      font-weight: 500;
      color: var(--color-text-muted);
      transition: background-color var(--duration-fill) var(--ease-out), color var(--duration-fill) var(--ease-out);
    }

    .choice-text { padding-block-start: 0.2rem; }

    .exam-bar {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-4);
      padding-block-start: var(--space-5);
      border-block-start: 1px solid var(--color-border);
    }

    .key-legend {
      display: flex;
      flex-wrap: wrap;
      gap: var(--space-2) var(--space-5);

      > span { display: inline-flex; align-items: center; gap: var(--space-2); }
    }

    kbd.key {
      display: inline-grid;
      place-items: center;
      min-inline-size: 1.5rem;
      block-size: 1.5rem;
      padding-inline: var(--space-1);
      border: 1px solid var(--color-border-strong);
      border-block-end-width: 2px;
      border-radius: var(--radius-sharp);
      font-family: inherit;
      color: var(--color-text);
    }

    .exam-steps { display: flex; gap: var(--space-3); }

    .exam-navigator ol {
      display: grid;
      grid-template-columns: repeat(10, minmax(0, 1fr));
      gap: 5px;
    }

    .nav-cell {
      --corner: 5px;
      position: relative;
      display: grid;
      place-items: center;
      inline-size: 100%;
      aspect-ratio: 1;
      border: 1px solid var(--color-border-strong);
      border-radius: var(--radius-sharp);
      background: var(--color-panel);
      color: var(--color-text-muted);
      font-family: var(--font-mono);
      font-size: 0.6875rem;
      line-height: 1;
      text-decoration: none;
      transition: background-color var(--duration-fill) var(--ease-out), color var(--duration-fill) var(--ease-out);

      &:hover { background: var(--color-panel-hover); color: var(--color-text); }

      &.is-answered {
        border-color: transparent;
        background: var(--color-cell-fill);
        color: var(--color-cell-on-fill);
      }

      &.is-current { color: var(--color-text); border-color: var(--color-text); }

      &.is-current.is-answered { color: var(--color-cell-on-fill); border-color: transparent; }

      &.is-current::before {
        content: "";
        position: absolute;
        inset: -5px;
        border: 1.5px solid var(--color-accent);
        pointer-events: none;
        mask:
          linear-gradient(#000 0 0) top left / var(--corner) var(--corner) no-repeat,
          linear-gradient(#000 0 0) top right / var(--corner) var(--corner) no-repeat,
          linear-gradient(#000 0 0) bottom left / var(--corner) var(--corner) no-repeat,
          linear-gradient(#000 0 0) bottom right / var(--corner) var(--corner) no-repeat;
      }
    }

    .cell-flag {
      position: absolute;
      inset-block-start: -6px;
      inset-inline-end: -6px;
      display: none;
      inline-size: 13px;
      block-size: 13px;
      padding: 1px;
      border-radius: 1px;
      background: var(--color-panel);
      color: var(--color-accent);
      box-shadow: 0 0 0 1px var(--color-border);
    }

    .is-flagged > .cell-flag { display: block; }

    .nav-legend {
      display: flex;
      flex-wrap: wrap;
      gap: var(--space-2) var(--space-4);

      li { display: inline-flex; align-items: center; gap: var(--space-2); }

      .glyph { inline-size: 0.8125rem; block-size: 0.8125rem; color: var(--color-accent); }
    }

    .legend-swatch {
      --corner: 4px;
      position: relative;
      inline-size: 0.8125rem;
      block-size: 0.8125rem;
      border: 1px solid var(--color-border-strong);
      border-radius: 1px;

      &.is-answered { border-color: transparent; background: var(--color-cell-fill); }

      &.is-current { border-color: var(--color-text); }

      &.is-current::before {
        content: "";
        position: absolute;
        inset: -4px;
        border: 1.5px solid var(--color-accent);
        mask:
          linear-gradient(#000 0 0) top left / var(--corner) var(--corner) no-repeat,
          linear-gradient(#000 0 0) top right / var(--corner) var(--corner) no-repeat,
          linear-gradient(#000 0 0) bottom left / var(--corner) var(--corner) no-repeat,
          linear-gradient(#000 0 0) bottom right / var(--corner) var(--corner) no-repeat;
      }
    }

    .rail {
      display: grid;
      gap: var(--space-5);
      padding: var(--space-5);
    }

    .rail-head {
      display: flex;
      flex-wrap: wrap;
      align-items: baseline;
      justify-content: space-between;
      gap: var(--space-2) var(--space-3);
    }

    .rail-foot {
      display: grid;
      gap: var(--space-4);
      padding-block-start: var(--space-4);
      border-block-start: 1px solid var(--color-border);

      > *, form > button { inline-size: 100%; }
    }

    .count-line {
      color: var(--color-text-muted);

      strong {
        margin-inline-end: var(--space-1);
        font-family: var(--font-display);
        font-size: var(--text-2xl);
        font-weight: 300;
        line-height: 1;
        color: var(--color-text);
      }
    }

    dialog {
      padding: 0;
      border: 0;
      color: var(--color-text);

      &::backdrop { background: oklch(10% 0.004 90 / 0.5); }
    }

    .sheet-dialog-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-3);
      padding: var(--space-4) var(--space-4) var(--space-4) var(--space-5);
      border-block-end: 1px solid var(--color-border);
    }

    .sheet-dialog {
      position: fixed;
      inset: auto 0 0;
      margin: 0 auto;
      inline-size: min(100%, 34rem);
      max-inline-size: 100%;
      max-block-size: 88dvh;
      border: 1px solid var(--color-border);
      border-block-end: 0;
      background: var(--color-panel);
      box-shadow: 0 -16px 40px var(--color-panel-shadow-far);

      &[open] { animation: sheet-in var(--duration-spring) var(--ease-out); }

      .rail { padding-block-start: var(--space-4); }
    }

    .confirm {
      inline-size: min(100vw - 2 * var(--gutter), 30rem);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sharp);
      background: var(--color-panel);
      box-shadow: 0 1px 2px var(--color-panel-shadow-near), 0 24px 64px var(--color-panel-shadow-far);

      &[open] { animation: confirm-in var(--duration-spring) var(--ease-out); }

      &::after {
        --corner: 0.625rem;
        content: "";
        position: absolute;
        inset: var(--space-2);
        border: 1px solid color-mix(in oklch, var(--color-accent) 35%, transparent);
        pointer-events: none;
        mask:
          linear-gradient(#000 0 0) top left / var(--corner) var(--corner) no-repeat,
          linear-gradient(#000 0 0) top right / var(--corner) var(--corner) no-repeat,
          linear-gradient(#000 0 0) bottom left / var(--corner) var(--corner) no-repeat,
          linear-gradient(#000 0 0) bottom right / var(--corner) var(--corner) no-repeat;
      }
    }

    .confirm-inner { display: grid; gap: var(--space-5); padding: var(--space-6); }

    .confirm-title {
      font-size: var(--text-2xl);
      font-weight: 300;
      letter-spacing: -0.02em;
      line-height: var(--line-height-tight);

      &:focus { outline: none; }
    }

    .confirm-warn {
      display: flex;
      gap: var(--space-3);
      padding: var(--space-4);
      border-inline-start: 2px solid var(--color-incorrect);
      background: color-mix(in oklch, var(--color-incorrect) 8%, transparent);

      .glyph { inline-size: 1rem; block-size: 1rem; margin-block-start: 0.2rem; color: var(--color-incorrect); }

      strong { font-weight: 600; }
    }

    .confirm-ok {
      display: flex;
      gap: var(--space-3);
      align-items: center;
      color: var(--color-text-muted);

      .glyph { inline-size: 1rem; block-size: 1rem; color: var(--color-correct); }
    }

    .confirm-actions {
      display: flex;
      flex-wrap: wrap;
      justify-content: flex-end;
      gap: var(--space-4);
      padding-block-start: var(--space-5);
      border-block-start: 1px solid var(--color-border);
    }

    @media (min-width: 64rem) {
      .exam-layout {
        grid-template-columns: minmax(0, 1fr) 19rem;
        column-gap: var(--space-8);
      }

      .exam-rail {
        display: grid;
        position: sticky;
        inset-block-start: calc(var(--header-h, 0px) + var(--space-5));
      }

      .questions-toggle { display: none; }
    }

    @media (scripting: none) {
      .exam-rail { display: grid; }

      .questions-toggle { display: none; }
    }

    @media (max-width: 32rem) {
      gap: var(--space-5);

      .choice { gap: var(--space-3); padding: var(--space-3); }

      .key-legend { display: none; }

      .exam-bar { gap: var(--space-3); }

      .exam-steps {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        inline-size: 100%;

        > * { padding-inline: var(--space-2); }
      }

      .questions-toggle { grid-column: 1 / -1; order: -1; }

      .exam-head .timer { order: 3; }

      .confirm-actions { flex-direction: column-reverse; }

      .confirm-actions > *, .confirm-actions button { inline-size: 100%; }
    }
  }

  @keyframes sheet-in {
    from { translate: 0 100%; }
  }

  @keyframes confirm-in {
    from { opacity: 0; translate: 0 var(--space-3); }
  }

  .exam-results {
    .auto-note {
      display: flex;
      gap: var(--space-3);
      align-items: center;
      max-inline-size: none;
      padding: var(--space-3) var(--space-4);
      border-inline-start: 2px solid var(--color-accent);
      background: var(--color-accent-faint);

      .glyph { inline-size: 1rem; block-size: 1rem; color: var(--color-accent); }
    }

    .r-hero {
      display: grid;
      gap: var(--space-6);
      padding: var(--space-6);
      background: color-mix(in oklch, var(--color-accent) 7%, var(--color-panel));
    }

    .r-score { display: grid; gap: var(--space-5); align-content: start; }

    .r-figure-row {
      display: flex;
      flex-wrap: wrap;
      align-items: flex-end;
      gap: var(--space-3) var(--space-5);

      .figure { font-size: var(--text-hero); }

      .verdict-tag { margin-block-end: var(--space-3); }
    }

    .pass-scale {
      position: relative;
      max-inline-size: 30rem;
      padding-block: var(--space-2) var(--space-6);
    }

    .scale-track {
      position: relative;
      block-size: 4px;
      background: var(--color-border);
    }

    .scale-fill {
      display: block;
      block-size: 100%;
      inline-size: calc(var(--value) * 1%);
      background: var(--color-text);
    }

    .scale-mark {
      position: absolute;
      inset-block: -6px;
      inset-inline-start: calc(var(--at) * 1%);
      inline-size: 2px;
      background: var(--color-accent);
    }

    .scale-mark-label {
      position: absolute;
      inset-block-start: calc(2 * var(--space-2) + 4px);
      inset-inline-start: calc(var(--at) * 1%);
      translate: -50% 0;
      white-space: nowrap;
    }

    .jump { display: grid; gap: var(--space-3); align-content: start; }

    .jump-grid {
      display: grid;
      grid-template-columns: repeat(10, minmax(0, 1fr));
      gap: 4px;
    }

    .jump-cell {
      display: grid;
      place-items: center;
      block-size: 1.625rem;
      border: 1px solid var(--color-border-strong);
      border-radius: 1px;
      font-family: var(--font-mono);
      font-size: 0.625rem;
      color: var(--color-text-muted);
      text-decoration: none;

      &:hover { border-color: var(--color-text); color: var(--color-text); }

      &.is-correct {
        border-color: transparent;
        background: color-mix(in oklch, var(--color-accent) 24%, var(--color-panel));
        color: var(--color-text);
      }

      &.is-incorrect {
        border-color: var(--color-incorrect);
        background:
          repeating-linear-gradient(135deg, color-mix(in oklch, var(--color-incorrect) 30%, transparent) 0 1.5px, transparent 1.5px 5px),
          var(--color-panel);
        color: var(--color-incorrect);
        font-weight: 600;
      }

      &.is-unanswered { border-style: dashed; color: var(--color-text-muted); }
    }

    .jump-legend {
      display: flex;
      flex-wrap: wrap;
      gap: var(--space-2) var(--space-4);

      li { display: inline-flex; align-items: center; gap: var(--space-2); }

      .jump-cell { inline-size: 0.875rem; block-size: 0.875rem; }
    }

    .unit-bar {
      position: relative;
      display: inline-block;
      inline-size: 6rem;
      block-size: 4px;
      margin-inline-start: var(--space-3);
      vertical-align: middle;
      background: var(--color-border);

      span { display: block; block-size: 100%; inline-size: calc(var(--value) * 1%); background: var(--color-text-muted); }

      &::after {
        content: "";
        position: absolute;
        inset-block: -4px;
        inset-inline-start: calc(var(--at) * 1%);
        inline-size: 1.5px;
        background: var(--color-accent);
      }
    }

    .review-tools {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-4);
    }

    .segmented {
      display: inline-grid;
      grid-auto-flow: column;
      padding: 3px;
      border: 1px solid var(--color-border-strong);
      border-radius: var(--radius-sharp);

      a {
        display: inline-flex;
        align-items: center;
        min-block-size: 2rem;
        padding-inline: var(--space-3);
        border-radius: 1px;
        color: var(--color-text-muted);
        font-size: var(--text-xs);
        text-decoration: none;
        white-space: nowrap;

        &:hover { color: var(--color-text); }

        &[aria-current] { background: var(--color-text); color: var(--color-surface); cursor: default; }
      }
    }

    .seg-count { margin-inline-start: var(--space-1); font-family: var(--font-mono); opacity: 0.75; }

    .review-label { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2) var(--space-4); }

    .review-context {
      margin-block-start: calc(var(--space-2) * -1);
      font-size: var(--text-sm);
      color: var(--color-text-muted);

      .review-context-code { font-family: var(--font-mono); color: var(--color-text); }

      .review-context-sep { margin-inline: var(--space-2); color: var(--color-border-strong); }
    }

    .review-result {
      display: inline-flex;
      align-items: center;
      gap: var(--space-1);

      .glyph { inline-size: 0.875rem; block-size: 0.875rem; }

      &.is-correct { color: var(--color-correct); }

      &.is-incorrect, &.is-unanswered { color: var(--color-incorrect); }
    }

    .exam-review {
      display: grid;
      gap: var(--space-8);

      > li {
        display: grid;
        gap: var(--space-4);
        padding-block-start: var(--space-8);
        border-block-start: 1px solid var(--color-border);
        scroll-margin-block-start: calc(var(--header-h, 0px) + var(--space-6));

        &:first-child { padding-block-start: 0; border-block-start: 0; }
      }
    }

    .review-empty { color: var(--color-text-muted); }

    @media (min-width: 64rem) {
      .r-hero {
        grid-template-columns: minmax(0, 1fr) minmax(0, 24rem);
        column-gap: var(--space-10);

        .results-actions { grid-column: 1 / -1; }
      }
    }

    @media (max-width: 32rem) {
      .r-hero { padding: var(--space-5); }

      .results-actions > * { inline-size: 100%; }

      .r-figure-row .figure { font-size: var(--text-5xl); }

      .unit-bar { display: none; }
    }
  }
}