/* Hub ĐGNL — /dgnl và /dgnl/lam-bai. Nạp SAU he-b.css, dùng token của hệ B
   (--ink, --bur, --ok, --danger, viền 2px, góc 4px, bóng cứng). Không màu vàng.
   ⛔ Không thêm @media (prefers-reduced-motion) — luật 4 của CLAUDE.md.
   Lưới dùng auto-fill/minmax thay vì breakpoint cửa sổ: sidebar 256px làm
   breakpoint theo cửa sổ sai (bẫy đã ghi ở memory front-end). */

.dg-page { --dg-gap: 18px; }
.dg-status { margin: 0 0 16px; color: var(--ink-2); font-weight: 600; }
.dg-error { color: var(--danger); font-weight: 600; }
.dg-empty { padding: 28px 22px; font-size: 15px; line-height: 1.6; }
.dg-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin: 0 0 18px; }
.dg-section { margin: 34px 0 0; }
.dg-section .section-title { font-size: clamp(20px, 2vw, 26px); margin: 0 0 8px; }
.dg-filter-label {
  margin: 0 0 8px; font-family: var(--font-mono); font-weight: 700;
  font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-2);
}
.dg-tabs { overflow-x: auto; scrollbar-width: none; }
.dg-tabs .lib-tab { white-space: nowrap; flex: 0 0 auto; }

/* Banner lượt dở */
.dg-resume {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
  margin: 0 0 20px; padding: 14px 18px;
  background: var(--bur-wash); border: 2px solid var(--ink); border-radius: var(--b-radius);
}
.dg-resume p { margin: 0; }

/* ---------- 1. Luyện đề ---------- */
.dg-exam-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(380px, 100%), 1fr)); gap: 22px; }
.dg-exam { display: flex; flex-direction: column; gap: 14px; padding: 20px; }
.dg-exam-head { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; }
.dg-exam-title { margin: 0; font-size: 21px; line-height: 1.25; }
.dg-mode-seg { align-self: flex-start; }
.dg-scope { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.dg-scope-chip {
  display: flex; flex-direction: column; align-items: flex-start; gap: 2px; padding: 9px 12px;
  background: var(--paper); border: 2px solid var(--line-b2); border-radius: var(--b-radius);
  color: var(--ink); text-align: left; cursor: pointer;
}
.dg-scope-chip strong { font-size: 14.5px; }
.dg-scope-chip span { font-family: var(--font-mono); font-weight: 700; font-size: 11px; color: var(--ink-2); }
.dg-scope-chip:hover { border-color: var(--ink); }
.dg-scope-chip.is-on { border-color: var(--ink); background: var(--ink); color: #fff; }
.dg-scope-chip.is-on span { color: #fff; }
.dg-exam-go { align-self: flex-start; }
.dg-exam-time { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 14px; }
.dg-exam-time input.bank-search { width: 160px; max-width: 160px; flex: 0 0 auto; margin: 0; }
.dg-exam-time.hidden { display: none; }
/* Tiến độ: đã làm hết (xanh) / làm dở / đang làm (link làm tiếp). */
.dg-progress {
  display: inline-flex; align-items: center; gap: 6px; padding: 3px 8px;
  border: 2px dashed var(--line-b2); border-radius: 4px; background: var(--paper);
  font-family: var(--font-mono); font-weight: 700; font-size: 11px; letter-spacing: 0.04em; color: var(--ink-2);
}
.dg-progress.is-done { border: 2px solid var(--ok); background: var(--ok-wash); color: var(--ok); }
.dg-progress.is-open { border-style: solid; border-color: var(--bur); color: var(--bur); text-decoration: none; }
.dg-progress.is-open:hover { background: var(--bur); color: #fff; }
.dg-scope-chip { position: relative; }
.dg-chip-tick {
  position: absolute; top: 7px; right: 8px; display: grid; place-items: center;
  width: 18px; height: 18px; border-radius: 50%; background: var(--ok); color: #fff;
  font-style: normal; font-weight: 800; font-size: 11px; line-height: 1;
}
.dg-scope-chip.is-covered { border-color: var(--ok); }
.dg-scope-chip.is-covered.is-on { border-color: var(--ink); }
.dg-scope-chip.is-on .dg-chip-tick { box-shadow: 0 0 0 2px #fff; }
.dg-scope-chip.is-partial { border-style: dashed; }

/* ---------- Extra ---------- */
.dg-extra-section { margin: 18px 0 12px; font-size: 18px; }
#dgExtra .dg-scope { grid-template-columns: repeat(auto-fill, minmax(112px, 1fr)); max-height: 260px; overflow-y: auto; }

/* ---------- 2. Luyện theo nội dung ---------- */
.dg-area-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(170px, 100%), 1fr)); gap: 14px; }
.dg-area {
  display: flex; flex-direction: column; align-items: flex-start; gap: 6px; padding: 16px;
  background: var(--paper); border: 2px solid var(--ink); border-radius: var(--b-radius);
  box-shadow: var(--b-shadow-sm); color: var(--ink); text-align: left; cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease;
}
@media (hover: hover) { .dg-area:not(:disabled):hover { transform: translate(-2px, -2px); box-shadow: var(--b-shadow); } }
.dg-area:disabled { opacity: 0.5; cursor: not-allowed; box-shadow: none; }
.dg-area.is-on { background: var(--ink); color: #fff; }
.dg-area-name { font-family: var(--font-display); font-size: 20px; }
.dg-area-count { font-size: 13.5px; color: inherit; opacity: 0.85; }
.dg-area-acc { font-family: var(--font-mono); font-weight: 700; font-size: 11px; letter-spacing: 0.04em; color: var(--ok); }
.dg-area-acc.is-none { color: var(--muted); }
.dg-area.is-on .dg-area-acc { color: #fff; }

.dg-drill { margin: 22px 0 0; padding: 22px; display: flex; flex-direction: column; gap: 16px; }
.dg-drill-title { margin: 0; font-size: 22px; }
.dg-filter-row .dg-chips + .dg-chips { margin-top: 8px; }
.dg-chips { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.dg-chip-group {
  flex: 0 0 100%; margin: 6px 0 0; font-family: var(--font-mono); font-weight: 700;
  font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted);
}
.dg-chip {
  display: inline-flex; align-items: center; gap: 8px; min-height: 38px; padding: 6px 12px;
  background: var(--paper); border: 2px solid var(--ink); border-radius: var(--b-radius);
  color: var(--ink); font-weight: 600; font-size: 14px; cursor: pointer;
}
.dg-chip:hover:not(:disabled):not(.is-on) { background: var(--bur-wash); }
.dg-chip.is-on { background: var(--ink); color: #fff; }
.dg-chip:disabled { border-color: var(--line-b2); color: var(--muted-2); cursor: not-allowed; }
.dg-chip-count { font-family: var(--font-mono); font-weight: 700; font-size: 11px; opacity: 0.75; }
.dg-drill-foot { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px 24px; padding-top: 14px; border-top: 2px solid var(--line-b); }

/* ---------- 3. Phân tích lỗi ---------- */
.dg-tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(96px, 100%), 1fr)); gap: 12px; }
.dg-tile { display: flex; flex-direction: column; gap: 4px; padding: 16px; background: var(--paper); border: 2px solid var(--ink); border-radius: var(--b-radius); }
.dg-tile strong { font-family: var(--font-display); font-size: clamp(22px, 3vw, 30px); line-height: 1; }
.dg-tile span { font-size: 13.5px; color: var(--ink-2); }
.dg-top { padding: 18px 20px; margin: 0 0 16px; display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.dg-top-head { display: flex; align-items: baseline; gap: 12px; }
.dg-top-head h3 { margin: 0; font-size: 19px; }
.dg-top-rank { font-family: var(--font-mono); font-weight: 700; color: var(--bur); font-size: 15px; }
.dg-top-stat { margin: 0; color: var(--ink-2); }
.dg-examples { width: 100%; }
.dg-examples > summary, .dg-stim-details > summary { cursor: pointer; font-weight: 700; color: var(--ink); padding: 4px 0; }
.dg-examples[open] > summary { margin-bottom: 10px; }

.dg-bars { display: flex; flex-direction: column; gap: 10px; }
.dg-bar-row { display: grid; grid-template-columns: minmax(90px, 160px) minmax(0, 1fr) auto; align-items: center; gap: 12px; }
.dg-bar-row.is-none { opacity: 0.6; }
.dg-bar-label { font-weight: 700; font-size: 14.5px; }
.dg-bar-track { height: 14px; background: var(--canvas-2); border: 2px solid var(--ink); border-radius: 3px; overflow: hidden; }
.dg-bar-fill { display: block; height: 100%; background: var(--ok); }
.dg-bar-value { font-family: var(--font-mono); font-weight: 700; font-size: 12px; color: var(--ink-2); white-space: nowrap; }

.dg-area-seg { flex-wrap: wrap; margin: 4px 0 16px; }
.dg-tables { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(380px, 100%), 1fr)); gap: 22px; }
.dg-table-wrap { overflow-x: auto; }
.dg-table-title { margin: 0 0 8px; font-size: 16px; }
.dg-table { width: 100%; border-collapse: collapse; background: var(--paper); border: 2px solid var(--ink); font-size: 14px; }
.dg-table th, .dg-table td { padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--line-b); }
.dg-table th { font-family: var(--font-mono); font-weight: 700; font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-2); background: var(--canvas); }
.dg-table td:not(:first-child), .dg-table th:not(:first-child) { text-align: right; white-space: nowrap; }
.dg-table tr.is-thin td { color: var(--muted); }
.dg-thin { display: inline-block; margin-left: 8px; font-family: var(--font-mono); font-size: 10px; font-weight: 700; color: var(--muted); }

/* ---------- 4. Lịch sử & câu sai ---------- */
.dg-hist-row {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 18px; margin: 0 0 12px; text-decoration: none; color: var(--ink);
}
.dg-hist-row:hover { background: var(--bur-wash); }
.dg-hist-main { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.dg-hist-chips { display: flex; gap: 6px; flex-wrap: wrap; }
.dg-hist-title { font-size: 16px; overflow-wrap: anywhere; }
.dg-hist-date { font-size: 13px; color: var(--ink-2); }
.dg-hist-score { display: flex; flex-direction: column; align-items: flex-end; flex: 0 0 auto; }
.dg-hist-score strong { font-family: var(--font-display); font-size: 24px; line-height: 1; }
.dg-hist-score span { font-size: 12.5px; color: var(--ink-2); }
.dg-toolbar[hidden] { display: none; }
#dgHistSearch { flex: 1 1 280px; max-width: 460px; }

/* Lịch sử nhóm theo đề: khối gập, bên trong là các lượt (dòng .dg-hist-row). */
.dg-hist-group { margin: 0 0 12px; padding: 0; }
.dg-hist-gsum {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 18px; cursor: pointer; list-style: none;
}
.dg-hist-gsum::-webkit-details-marker { display: none; }
.dg-hist-gsum:hover { background: var(--bur-wash); }
.dg-hist-gtitle { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; min-width: 0; }
.dg-hist-code {
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-2);
  padding: 2px 8px; border: 1px solid var(--line, currentColor); border-radius: 999px; overflow-wrap: anywhere;
}
.dg-hist-gbody { border-top: 1px solid var(--line, rgba(0, 0, 0, 0.12)); }
.dg-hist-gbody .dg-hist-row { margin: 0; padding: 12px 18px 12px 30px; border-bottom: 1px solid var(--line, rgba(0, 0, 0, 0.08)); }
.dg-hist-gbody .dg-hist-row:last-child { border-bottom: 0; }

.dg-select-label { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 14px; }
#dgRetryBtn { margin-left: auto; }

/* ---------- Câu hỏi (dùng chung) ---------- */
.dg-q {
  margin: 0 0 16px; padding: 18px 20px; background: var(--paper);
  border: 2px solid var(--ink); border-radius: var(--b-radius); box-shadow: var(--b-shadow-sm);
}
.dg-q-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin: 0 0 12px; }
.dg-q-num { font-family: var(--font-mono); font-weight: 700; font-size: 13px; padding: 3px 8px; background: var(--ink); color: #fff; border-radius: 3px; }
.dg-q-tags { font-size: 13px; color: var(--ink-2); }
.dg-q-stem { font-size: 17px; line-height: 1.6; margin: 0 0 14px; overflow-wrap: anywhere; }
.dg-q-missing { margin: 0; color: var(--muted); font-style: italic; }
.dg-opts { display: flex; flex-direction: column; gap: 10px; }
.dg-opt {
  display: flex; align-items: flex-start; gap: 12px; width: 100%; padding: 10px 14px;
  background: var(--paper); border: 2px solid var(--line-b2); border-radius: var(--b-radius);
  color: var(--ink); font-family: inherit; font-size: 16px; line-height: 1.5; text-align: left; cursor: pointer;
}
.dg-opt:hover:not(:disabled) { border-color: var(--ink); background: var(--bur-wash); }
.dg-opt:disabled { cursor: default; }
.dg-opt-letter {
  flex: 0 0 auto; width: 28px; height: 28px; display: grid; place-items: center;
  border: 2px solid var(--ink); border-radius: 50%; font-family: var(--font-mono); font-weight: 700; font-size: 13px;
}
.dg-opt-text { flex: 1 1 auto; min-width: 0; overflow-wrap: anywhere; padding-top: 1px; }
.dg-opt.is-chosen, .dg-opt.is-chosen:hover:not(:disabled) { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); background: var(--paper); color: var(--ink); }
.dg-opt.is-chosen .dg-opt-letter { border-color: var(--ink); background: var(--ink); color: #fff; }
.dg-opt.is-correct { border-color: var(--ok); background: var(--ok-wash); color: var(--ink); }
.dg-opt.is-correct .dg-opt-letter { border-color: var(--ok); background: var(--ok); color: #fff; }
.dg-opt.is-wrong { border-color: var(--danger); background: #FDECEF; color: var(--ink); }
.dg-opt.is-wrong .dg-opt-letter { border-color: var(--danger); background: var(--danger); color: #fff; }
.dg-verdict { margin: 14px 0 0; font-weight: 700; }
.dg-verdict.is-correct { color: var(--ok); }
.dg-verdict.is-wrong { color: var(--danger); }
.dg-verdict.is-skipped { color: var(--ink-2); }
.dg-low { margin: 6px 0 0; font-size: 13px; color: var(--bur); font-weight: 600; }
.dg-expl { margin: 12px 0 0; padding: 12px 14px; background: var(--canvas); border-left: 4px solid var(--ink); border-radius: 0 4px 4px 0; }
.dg-expl-label { margin: 0 0 4px; font-family: var(--font-mono); font-weight: 700; font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-2); }
.dg-expl-text { font-size: 15px; line-height: 1.6; }
.dg-stimulus {
  margin: 0 0 16px; padding: 16px 18px; background: var(--paper);
  border: 2px dashed var(--ink); border-radius: var(--b-radius);
}
.dg-stimulus-label { margin: 0 0 8px; font-family: var(--font-mono); font-weight: 700; font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-2); }
.dg-stimulus-text { font-size: 16px; line-height: 1.7; overflow-wrap: anywhere; }
.dg-stim-details { margin: 0 0 10px; }
.dg-figure { margin: 12px 0; }
/* Công thức dán dạng ảnh trong đề Word gốc: cao theo em (đặt bằng JS), nằm trên dòng chữ. */
.dg-inline-fig { display: inline-block; width: auto; max-width: 100%; vertical-align: middle; margin: 0 1px; }
.dg-figure { cursor: zoom-in; }
.dg-figure img { display: block; max-width: 100%; height: auto; border: 1px solid var(--line-b2); background: #fff; }
.dg-figure.is-zoomed { overflow-x: auto; cursor: zoom-out; }
.dg-figure.is-zoomed img { max-width: none !important; }
.dg-opts.is-compact { flex-direction: row; flex-wrap: wrap; gap: 10px; }
.dg-opts.is-compact .dg-opt { width: auto; flex: 1 1 0; min-width: 64px; justify-content: center; padding: 10px; }
.dg-figure.is-broken figcaption { color: var(--danger); font-size: 13px; }
.dg-math .katex { font-size: 1.05em; }
.dg-rich-text { display: block; }
.dg-table-scroll { overflow-x: auto; margin: 10px 0; }
.dg-rich-table { border-collapse: collapse; font-size: 15px; background: var(--paper); }
.dg-rich-table th, .dg-rich-table td { border: 1px solid var(--ink-2); padding: 5px 10px; text-align: center; vertical-align: middle; overflow-wrap: normal; word-break: normal; }
.dg-rich-table th { background: var(--canvas); font-weight: 700; }
@media (max-width: 480px) {
  .dg-rich-table { font-size: 13.5px; }
  .dg-rich-table th, .dg-rich-table td { padding: 4px 6px; }
}
.dg-opt-text .dg-rich-text { display: inline; }
.dg-q u, .dg-stimulus u { text-decoration-thickness: 2px; text-underline-offset: 3px; }

/* ---------- Màn làm bài ---------- */
.dg-runbar {
  position: sticky; top: var(--shell-top-h); z-index: 5;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 18px;
  margin: 0 0 18px; padding: 12px 16px;
  background: var(--paper); border: 2px solid var(--ink); border-radius: var(--b-radius); box-shadow: var(--b-shadow-sm);
}
.dg-runbar-main { display: flex; align-items: center; gap: 10px; min-width: 0; }
.dg-runbar-title { font-size: 16px; overflow-wrap: anywhere; }
.dg-runbar-side { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; }
.dg-progress { font-family: var(--font-mono); font-weight: 700; font-size: 12.5px; }
.dg-save { font-size: 12.5px; color: var(--muted); min-width: 0; }
.dg-save[data-state="error"] { color: var(--danger); font-weight: 700; }
.dg-clock {
  font-family: var(--font-mono); font-weight: 700; font-size: 20px; font-variant-numeric: tabular-nums;
  padding: 4px 10px; border: 2px solid var(--ink); border-radius: var(--b-radius);
}
.dg-clock.is-warning { background: var(--danger); border-color: var(--danger); color: #fff; }
/* Khi đã dời lên thanh nav (dockRunbar): chế độ + tên đề bên trái, tiến độ +
   đồng hồ + Nộp bài bên phải. Tên đề được xuống dòng, KHÔNG cắt bằng dấu "…". */
#shellTop .dg-runbar-main { flex: 1 1 auto; min-width: 0; }
#shellTop .dg-runbar-title { font-size: 16px; line-height: 1.2; }
#shellTop .dg-runbar-side { flex: none; flex-wrap: nowrap; gap: 14px; }
#shellTop .dg-clock { font-size: 18px; padding: 3px 10px; }
#shellTop #dgSubmit { height: 40px; padding: 0 18px; white-space: nowrap; }
body.dg-run-active .shell-top-title,
body.dg-run-active #navWallet,
body:not(.dg-run-active) #shellTop .dg-runbar-main,
body:not(.dg-run-active) #shellTop .dg-runbar-side { display: none; }
#dgSubmit.is-ready { box-shadow: 0 0 0 3px var(--bur-soft), var(--b-shadow-sm); }

/* Chia đôi (2026-10-15): câu có bài đọc → bài đọc BÊN TRÁI (dính, cuộn riêng),
   câu hỏi + đáp án BÊN PHẢI. Không có bài đọc → một cột câu hỏi, căn giữa. */
.container.app-page.dg-run-page { padding-bottom: 120px; }
.dg-run-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 22px; align-items: start; max-width: 860px; margin: 0 auto; }
.dg-run-layout.has-stim { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); max-width: none; margin: 0; }
.dg-run-passage { display: none; }
.dg-run-layout.has-stim .dg-run-passage {
  display: block; position: sticky; top: calc(var(--shell-top-h) + 14px);
  max-height: calc(100vh - var(--shell-top-h) - 14px - 86px); overflow-y: auto;
}
.dg-run-passage .dg-stimulus { margin: 0; }
.dg-run-nav { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin: 4px 0 0; }
.dg-flag.is-on { background: var(--bur); color: #fff; border-color: var(--bur); }
body.dg-expired .dg-opt { pointer-events: none; }

/* Hàng số câu ghim ĐÁY màn hình: một dòng ngang cuộn được. */
.dg-bottomnav {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
  display: flex; align-items: center; gap: 18px;
  padding: 8px 20px calc(8px + env(safe-area-inset-bottom, 0px));
  background: var(--paper); border-top: 2px solid var(--ink);
}
.dg-bn-scroll { position: relative; flex: 1 1 auto; min-width: 0; overflow-x: auto; padding: 5px 5px 7px; }
#dgGrid { display: flex; align-items: center; gap: 18px; width: max-content; }
.dg-grid-group { display: flex; align-items: center; gap: 8px; flex: none; }
.dg-grid-group + .dg-grid-group { padding-left: 18px; border-left: 2px solid var(--line-b2); }
.dg-grid-label { margin: 0; font-weight: 700; font-size: 12.5px; white-space: nowrap; }
.dg-grid-cells { display: flex; gap: 5px; }
.dg-grid-cells .dg-cell { flex: none; width: 36px; }
.dg-bottomnav .dg-legend { margin: 0; flex: none; flex-wrap: nowrap; white-space: nowrap; }
.dg-cell {
  height: 34px; padding: 0; border: 2px solid var(--line-b2); border-radius: 3px; background: var(--paper);
  font-family: var(--font-mono); font-weight: 700; font-size: 12px; color: var(--ink); cursor: pointer;
}
.dg-cell.is-answered { background: var(--ink); border-color: var(--ink); color: #fff; }
.dg-cell.is-flagged { background: var(--bur-wash); border-color: var(--bur); color: var(--bur); }
.dg-cell.is-correct { background: var(--ok); border-color: var(--ok); color: #fff; }
.dg-cell.is-wrong { background: var(--danger); border-color: var(--danger); color: #fff; }
.dg-cell.is-current { outline: 3px solid var(--bur); outline-offset: 1px; }
.dg-legend { list-style: none; margin: 14px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 14px; font-size: 12.5px; color: var(--ink-2); }
.dg-legend li { display: flex; align-items: center; gap: 6px; }
.dg-cell-swatch { display: inline-block; width: 16px; height: 16px; cursor: default; }

/* ---------- Xem lại / Sổ câu sai: bài đọc trái | các câu phải ---------- */
.container.app-page.dg-page { padding-bottom: 110px; }
.dg-rv { margin: 0 0 22px; }
.dg-rv.has-stim { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 22px; align-items: start; }
.dg-rv-passage {
  position: sticky; top: calc(var(--shell-top-h) + 14px);
  max-height: calc(100vh - var(--shell-top-h) - 14px - 86px); overflow-y: auto;
}
.dg-rv-passage .dg-stimulus { margin: 0; }
.dg-listnav-cells { width: max-content; }
@media (max-width: 900px) {
  .dg-rv.has-stim { grid-template-columns: minmax(0, 1fr); }
  .dg-rv-passage { position: static; max-height: 42vh; }
}

/* ---------- Kết quả ---------- */
.dg-score { padding: 22px; display: flex; flex-direction: column; gap: 18px; }
.dg-score-big { display: flex; align-items: baseline; gap: 12px; }
.dg-score-big strong { font-family: var(--font-display); font-size: clamp(40px, 5vw, 60px); line-height: 1; }
.dg-score-big span { font-size: 16px; color: var(--ink-2); }
.dg-scaled { margin: 0; display: flex; flex-direction: column; gap: 2px; }
.dg-scaled span { font-size: 13px; color: var(--muted); }
.dg-result-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 18px 0 0; }
.dg-review-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin: 34px 0 16px; }
.dg-review-head .section-title { margin: 0; font-size: clamp(20px, 2vw, 26px); }

@media (max-width: 900px) {
  .dg-run-layout.has-stim { grid-template-columns: minmax(0, 1fr); }
  .dg-run-layout.has-stim .dg-run-passage { position: static; max-height: 42vh; }
  /* Trên điện thoại hàng số câu nằm TRÊN thanh tab 5 mục của khung app. */
  .dg-bottomnav { bottom: calc(var(--shell-tab-h) + env(safe-area-inset-bottom, 0px)); padding: 6px 12px; }
  .dg-bottomnav .dg-legend { display: none; }
  .container.app-page.dg-run-page { padding-bottom: 80px; }
  .dg-runbar { position: static; }
  #shellTop .dg-save, #shellTop .dg-runbar-main .b-chip { display: none; }
  #shellTop .dg-runbar-side { gap: 8px; }
  #shellTop .dg-runbar-title { font-size: 14px; }
  #shellTop #dgSubmit { padding: 0 12px; height: 36px; }
}
@media (max-width: 640px) {
  #shellTop .dg-progress { display: none; }
  body.has-shell .container.dg-page { padding-left: 16px; padding-right: 16px; }
  .dg-q { padding: 14px; }
  .dg-q-stem { font-size: 16px; }
  .dg-opt { font-size: 15px; }
  .dg-bar-row { grid-template-columns: minmax(70px, 100px) minmax(0, 1fr) auto; gap: 8px; }
  .dg-hist-row { padding: 12px 14px; }
  .dg-hist-gsum { padding: 12px 14px; }
  .dg-hist-gbody .dg-hist-row { padding: 12px 14px 12px 20px; }
  .dg-run-nav .btn { padding-left: 12px; padding-right: 12px; }
  #dgRetryBtn { margin-left: 0; }
}

/* ---------- Tô màu (dgnl-highlight.js) ----------
   Nền mờ để chữ mực vẫn đọc rõ; mỗi màu thêm một kiểu gạch chân riêng để vẫn
   phân biệt được khi không phân biệt màu (đỏ: liền, vàng: không, xanh: chấm). */
.dg-hl { color: inherit; padding: 0.04em 0; border-radius: 2px; cursor: pointer; }
.dg-hl.is-red { background: #F6C9CF; box-shadow: inset 0 -2px 0 #C0394F; }
.dg-hl.is-yellow { background: #FBE7A1; }
.dg-hl.is-blue { background: #C9DDF7; text-decoration: underline dotted #2E5E9E 2px; text-underline-offset: 3px; }
.dg-hl-bar {
  position: fixed; z-index: 60; display: flex; align-items: center; gap: 6px; padding: 6px;
  background: var(--paper); border: 2px solid var(--ink); border-radius: 4px; box-shadow: 3px 3px 0 var(--ink);
}
.dg-hl-bar[hidden] { display: none; }
.dg-hl-swatch { width: 30px; height: 30px; border: 2px solid var(--ink); border-radius: 4px; cursor: pointer; padding: 0; }
.dg-hl-swatch.is-red { background: #F6C9CF; box-shadow: inset 0 -4px 0 #C0394F; }
.dg-hl-swatch.is-yellow { background: #FBE7A1; }
.dg-hl-swatch.is-blue { background: #C9DDF7; box-shadow: inset 0 -4px 0 #2E5E9E; }
.dg-hl-swatch:hover, .dg-hl-erase:hover { transform: translate(-1px, -1px); }
.dg-hl-erase {
  height: 30px; padding: 0 10px; border: 2px solid var(--ink); border-radius: 4px; background: var(--paper);
  color: var(--ink); font-family: var(--font-mono); font-weight: 700; font-size: 11px; cursor: pointer;
}