/* =====================================================================
 * CocaCoach · Dual-Mode International Design System (v3)
 * Mode 1: Editorial SaaS Portal, Practice Studio & Question Bank Admin
 * Mode 2: 1:1 Authentic Pearson VUE Test Driver (abe-prd-1.pearsonvue.com)
 * ===================================================================== */
:root {
  /* Core Palette — Cool Alpine Paper & Deep Slate Ink */
  --navy: #1B365D;
  --navy-2: #0F2547;
  --blue: #1E40AF;
  --blue-dark: #1E3A8A;
  --blue-light: #EFF6FF;
  --ink: #0F172A;
  --ink-2: #334155;
  --ink-3: #64748B;
  --line: #CBD5E1;
  --line-2: #E2E8F0;
  --bg: #F8FAFC;
  --surface: #FFFFFF;
  --panel: #F1F5F9;
  --zone: #F8FAFC;

  /* Semantic FOCAL / HINGE Signals */
  --best: #0F766E;
  --best-wash: #F0FDFA;
  --best-border: #99F6E4;
  --worst: #991B1B;
  --worst-wash: #FEF2F2;
  --worst-border: #FECACA;
  --warn: #B45309;
  --warn-wash: #FFFBEB;

  /* Typography */
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", sans-serif;
  --serif: "Charter", "Iowan Old Style", "Georgia", "Songti SC", "Noto Serif SC", serif;
  --mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;

  /* Sizing & Rhythm */
  --r: 4px;
  --r-md: 6px;
  --fs-xs: 12px;
  --fs-sm: 13px;
  --fs: 15px;
  --fs-md: 16.5px;
  --fs-lg: 20px;
  --fs-xl: 26px;
  --fs-2xl: 34px;
}

/* High-Contrast Dark & Warm Paper Themes for Pearson VUE Driver */
body[data-contrast="dark"] {
  --bg: #0B1120;
  --surface: #111827;
  --panel: #1E293B;
  --zone: #1F2937;
  --ink: #F8FAFC;
  --ink-2: #CBD5E1;
  --ink-3: #94A3B8;
  --line: #334155;
  --line-2: #1E293B;
  --best-wash: #064E3B;
  --best: #34D399;
  --worst-wash: #450A0A;
  --worst: #F87171;
}

body[data-contrast="warm"] {
  --bg: #F4F1EA;
  --surface: #FAF8F5;
  --panel: #EFECE4;
  --zone: #F5F2EB;
  --ink: #1C1917;
  --ink-2: #44403C;
  --line: #D6D3CD;
  --line-2: #E7E5E0;
}

body[data-fontsize="sm"] { --fs: 13.5px; --fs-md: 15px; }
body[data-fontsize="lg"] { --fs: 17px; --fs-md: 19px; }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--fs);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* =====================================================================
 * 1. Global Navigation Bar (.cc-nav)
 * ===================================================================== */
.cc-nav {
  background: #0F172A;
  color: #F8FAFC;
  border-bottom: 1px solid #1E293B;
  position: sticky;
  top: 0;
  z-index: 50;
}
.cc-nav__inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.cc-nav__brand {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.cc-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #FFFFFF;
  text-decoration: none !important;
}
.cc-logo__mark {
  width: 32px;
  height: 32px;
  border-radius: var(--r);
  background: linear-gradient(135deg, #2563EB, #0D9488);
  color: #FFF;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.04em;
}
.cc-logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.cc-logo__text strong { font-size: 15px; font-weight: 700; letter-spacing: -0.01em; }
.cc-logo__text small { font-size: 11px; color: #94A3B8; font-weight: 400; }

.cc-nav__links {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.cc-nav__links a {
  color: #CBD5E1;
  font-size: 13.5px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--r);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}
.cc-nav__links a:hover { background: #1E293B; color: #FFFFFF; }
.cc-nav__links a.is-active,
.cc-nav__links a[aria-current="page"] {
  background: #1E40AF;
  color: #FFFFFF;
  font-weight: 600;
}

.cc-nav__controls {
  display: flex;
  align-items: center;
  gap: 10px;
}
.cc-pill-group {
  display: inline-flex;
  background: #1E293B;
  padding: 2px;
  border-radius: var(--r);
  border: 1px solid #334155;
}
.cc-pill-btn {
  background: transparent;
  border: 0;
  color: #94A3B8;
  font-family: var(--mono);
  font-size: 11.5px;
  padding: 4px 8px;
  border-radius: 3px;
  cursor: pointer;
}
.cc-pill-btn[aria-pressed="true"] {
  background: #FFFFFF;
  color: #0F172A;
  font-weight: 600;
}
.cc-ui-toggle {
  background: #1E293B;
  border: 1px solid #334155;
  color: #E2E8F0;
  font-size: 12px;
  padding: 5px 10px;
  border-radius: var(--r);
  cursor: pointer;
}
.cc-ui-toggle:hover { background: #334155; }
.cc-user-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #A7F3D0;
  font-size: 12px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 999px;
  text-decoration: none !important;
}
.cc-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10B981;
}

/* =====================================================================
 * 2. Layout Containers, Editorial Hero & Bilingual Typography
 * ===================================================================== */
.cc-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 24px 96px;
}
.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px 20px 96px;
}
.sec {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.015em;
  margin: 32px 0 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.sec:first-child { margin-top: 0; }
.lead { font-family: var(--serif); font-size: var(--fs-md); line-height: 1.72; margin: 0; color: var(--ink); }
.hint { font-size: var(--fs-sm); color: var(--ink-3); }
.block {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 18px 20px;
  background: var(--surface);
}
.panel {
  background: var(--panel);
  border-left: 3px solid var(--blue);
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.65;
  border-radius: 0 var(--r) var(--r) 0;
}

/* Bilingual Text Blocks */
.bi-en {
  font-family: var(--serif);
  font-size: var(--fs-md);
  line-height: 1.68;
  color: var(--ink);
}
.bi-cn {
  font-family: var(--sans);
  font-size: calc(var(--fs) - 0.5px);
  line-height: 1.65;
  color: var(--ink-2);
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px dashed var(--line-2);
}

/* Hero Banner */
.cc-hero {
  background: linear-gradient(180deg, #0F172A 0%, #1E293B 100%);
  color: #FFFFFF;
  border-bottom: 1px solid #334155;
  padding: 36px 24px;
}
.cc-hero__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 32px;
  align-items: center;
}
.cc-hero__eyebrow {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: #38BDF8;
  margin-bottom: 10px;
}
.cc-hero__title {
  font-size: 30px;
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}
.cc-hero__desc {
  color: #CBD5E1;
  font-size: 15px;
  line-height: 1.65;
  margin: 0 0 20px;
  max-width: 68ch;
}
.cc-hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.cc-hero__stats {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--r-md);
  padding: 18px 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.cc-stat__val {
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 700;
  color: #FFFFFF;
  font-variant-numeric: tabular-nums;
}
.cc-stat__lbl {
  font-size: 12px;
  color: #94A3B8;
  margin-top: 2px;
}

/* =====================================================================
 * 3. Track Cards (ACC / PCC / MCC / ACTC) & Mode Grids
 * ===================================================================== */
.cc-tracks-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.cc-track-card {
  text-align: left;
  background: var(--surface);
  border: 1.5px solid var(--line);
  border-radius: var(--r-md);
  padding: 16px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.1s;
}
.cc-track-card:hover {
  border-color: var(--blue);
}
.cc-track-card[aria-pressed="true"] {
  border-color: var(--blue);
  background: var(--blue-light);
  box-shadow: 0 0 0 2px rgba(30, 64, 175, 0.15);
}
.cc-track-card__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.cc-track-card__code {
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 800;
  color: var(--ink);
}
.cc-track-card__badge {
  font-family: var(--mono);
  font-size: 11px;
  padding: 2px 7px;
  border-radius: var(--r);
  background: var(--panel);
  color: var(--ink-2);
  font-weight: 600;
}
.cc-track-card__title {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.35;
}
.cc-track-card__meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-3);
}

.cc-modes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.cc-mode-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}
.cc-mode-card--highlight {
  border-left: 4px solid var(--blue);
}
.cc-mode-card__title {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
}
.cc-mode-card__desc {
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.5;
}
.cc-mode-card__tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 8px;
}

/* Buttons & Inputs */
.btn {
  font-family: var(--sans);
  font-size: 13.5px;
  font-weight: 600;
  background: var(--blue);
  color: #FFFFFF;
  border: 1px solid var(--blue-dark);
  border-radius: var(--r);
  padding: 8px 16px;
  cursor: pointer;
  text-decoration: none !important;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  white-space: nowrap;
  transition: background 0.15s;
}
.btn:hover { background: var(--blue-dark); }
.btn--quiet {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--line);
}
.btn--quiet:hover { background: var(--panel); }
.btn--emerald {
  background: var(--best);
  border-color: #115E59;
  color: #FFFFFF;
}
.btn--emerald:hover { background: #115E59; }
.btn--danger {
  background: var(--worst);
  border-color: #7F1D1D;
  color: #FFFFFF;
}
.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

input[type="text"], input[type="email"], input[type="password"], input[type="number"], select, textarea {
  font-family: var(--sans);
  font-size: 14px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 7px 11px;
}
textarea { line-height: 1.55; }

/* Tables & Pills */
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td {
  border-bottom: 1px solid var(--line-2);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
th {
  color: var(--ink-2);
  font-weight: 600;
  background: var(--panel);
  font-size: 12.5px;
}
td.num, th.num { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }
.pill {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11.5px;
  border-radius: var(--r);
  padding: 2px 7px;
  margin: 0 4px 4px 0;
  font-weight: 500;
}
.pill.ok { background: var(--best-wash); color: var(--best); border: 1px solid var(--best-border); }
.pill.gap { background: var(--worst-wash); color: var(--worst); border: 1px solid var(--worst-border); }
.pill.info { background: var(--blue-light); color: var(--blue); border: 1px solid #BFDBFE; }

/* =====================================================================
 * 4. Authentic Pearson VUE Test Driver UI (body.pv-driver)
 * ===================================================================== */
body.pv-driver {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-bottom: 64px;
}

/* Top Navy Bar: Exam Title, Candidate Name, Timer & Item Counter */
.pv-header {
  background: var(--navy);
  color: #FFFFFF;
  padding: 8px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid #0F2547;
  user-select: none;
}
.pv-header__left {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.pv-header__exam {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
}
.pv-header__candidate {
  font-size: 13px;
  color: #CBD5E1;
  border-left: 1px solid #475569;
  padding-left: 14px;
}
.pv-header__meters {
  display: flex;
  align-items: center;
  gap: 20px;
  font-family: var(--mono);
  font-size: 13.5px;
  font-variant-numeric: tabular-nums;
}
.pv-meter {
  display: flex;
  align-items: center;
  gap: 8px;
}
.pv-meter.is-warn { color: #FCD34D; font-weight: 700; }
.pv-meter.is-danger { color: #FCA5A5; font-weight: 700; }
.pv-meter__toggle {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #E2E8F0;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 3px;
  cursor: pointer;
}
.pv-meter__toggle:hover { background: rgba(255, 255, 255, 0.22); }

/* Secondary Brushed Steel Toolbar: Highlight, Strikethrough, Contrast, Lang, Flag */
.pv-subbar {
  background: #DCE4EE;
  color: #1E293B;
  padding: 6px 20px;
  border-bottom: 1px solid #94A3B8;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  user-select: none;
}
body[data-contrast="dark"] .pv-subbar {
  background: #1E293B;
  color: #E2E8F0;
  border-bottom-color: #334155;
}
.pv-subbar__tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.pv-toolbtn {
  background: #FFFFFF;
  color: #1E293B;
  border: 1px solid #94A3B8;
  border-radius: 3px;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
body[data-contrast="dark"] .pv-toolbtn {
  background: #0F172A;
  color: #E2E8F0;
  border-color: #475569;
}
.pv-toolbtn:hover { background: #F1F5F9; }
.pv-toolbtn[aria-pressed="true"] {
  background: var(--navy);
  color: #FFFFFF;
  border-color: var(--navy);
}
.pv-flagbtn {
  background: #FFFFFF;
  color: #1E293B;
  border: 1px solid #94A3B8;
  border-radius: 3px;
  font-size: 12.5px;
  font-weight: 600;
  padding: 4px 12px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.pv-flagbtn[aria-pressed="true"] {
  background: #FEF3C7;
  color: #92400E;
  border-color: #F59E0B;
}

/* Pearson VUE Workspace & Scenario Card */
.pv-workspace {
  max-width: 1120px;
  width: 100%;
  margin: 0 auto;
  padding: 22px 24px 40px;
  position: relative;
}
.pv-watermark {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-3);
  opacity: 0.45;
  text-align: right;
  margin-bottom: 8px;
  user-select: none;
}
.pv-instruction-banner {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 4px solid var(--navy);
  padding: 9px 14px;
  font-size: 13px;
  color: var(--ink-2);
  margin-bottom: 18px;
  border-radius: 3px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.pv-scenario-box {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 20px 24px;
  margin-bottom: 20px;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.03);
}
.pv-highlight {
  background: #FEF08A;
  color: #1E293B;
  padding: 0 2px;
  border-radius: 2px;
}

/* Pearson VUE Dual-Choice Response Matrix (BEST / WORST Columns + Option Text) */
.pv-matrix {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--surface);
  overflow: hidden;
}
.pv-matrix__head {
  display: grid;
  grid-template-columns: 84px 84px 44px 1fr 48px;
  background: var(--panel);
  border-bottom: 2px solid var(--line);
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-2);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  align-items: center;
  padding: 10px 12px;
}
.pv-matrix__head--ki {
  grid-template-columns: 96px 44px 1fr 48px;
}
.pv-matrix__col-center { text-align: center; }

.pv-matrix__row {
  display: grid;
  grid-template-columns: 84px 84px 44px 1fr 48px;
  border-bottom: 1px solid var(--line-2);
  padding: 14px 12px;
  align-items: start;
  transition: background 0.12s;
}
.pv-matrix__row--ki {
  grid-template-columns: 96px 44px 1fr 48px;
}
.pv-matrix__row:last-child { border-bottom: 0; }
.pv-matrix__row:hover { background: var(--zone); }
.pv-matrix__row.is-best { background: rgba(15, 118, 110, 0.06); }
.pv-matrix__row.is-worst { background: rgba(153, 27, 27, 0.06); }
.pv-matrix__row.is-struck .pv-matrix__text {
  text-decoration: line-through;
  opacity: 0.48;
}

.pv-slot-cell {
  display: flex;
  justify-content: center;
  padding-top: 2px;
}
.pv-radio-btn {
  width: 64px;
  height: 30px;
  border-radius: 3px;
  border: 1.5px solid #94A3B8;
  background: var(--surface);
  color: var(--ink-2);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.12s;
}
.pv-radio-btn:hover { border-color: var(--blue); }
.pv-radio-btn--best[aria-pressed="true"] {
  background: var(--best);
  border-color: var(--best);
  color: #FFFFFF;
  box-shadow: 0 1px 3px rgba(15, 118, 110, 0.3);
}
.pv-radio-btn--worst[aria-pressed="true"] {
  background: var(--worst);
  border-color: var(--worst);
  color: #FFFFFF;
  box-shadow: 0 1px 3px rgba(153, 27, 27, 0.3);
}
.pv-opt-letter {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 14px;
  color: var(--ink-2);
  text-align: center;
  padding-top: 3px;
}
.pv-strike-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 12px;
  padding: 4px 6px;
  border-radius: 3px;
  cursor: pointer;
  justify-self: center;
}
.pv-strike-btn:hover { border-color: var(--line); background: var(--panel); }
.pv-strike-btn[aria-pressed="true"] {
  background: var(--panel);
  color: var(--worst);
  border-color: var(--line);
  font-weight: 700;
}

/* Pearson VUE Bottom Control Bar */
.pv-footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--navy);
  color: #FFFFFF;
  border-top: 2px solid #0F2547;
  padding: 8px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  z-index: 40;
  user-select: none;
}
.pv-footer__left, .pv-footer__right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.pv-navbtn {
  background: #2B4C7E;
  color: #FFFFFF;
  border: 1px solid #4A6FA5;
  border-radius: 3px;
  font-family: var(--sans);
  font-size: 13.5px;
  font-weight: 600;
  padding: 7px 16px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.pv-navbtn:hover:not(:disabled) { background: #3B629B; }
.pv-navbtn:disabled { opacity: 0.45; cursor: not-allowed; }
.pv-navbtn--primary {
  background: #2563EB;
  border-color: #60A5FA;
}
.pv-navbtn--primary:hover:not(:disabled) { background: #1D4ED8; }
.pv-navbtn--submit {
  background: #0D9488;
  border-color: #2DD4BF;
}

/* Full-Screen Item Review Grid */
.pv-review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 10px;
  margin-top: 16px;
}
.pv-review-cell {
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 10px;
  background: var(--surface);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: transform 0.1s, border-color 0.1s;
}
.pv-review-cell:hover { border-color: var(--blue); transform: translateY(-1px); }
.pv-review-cell[data-status="complete"] {
  background: var(--best-wash);
  border-color: var(--best-border);
}
.pv-review-cell[data-status="incomplete"] {
  background: var(--warn-wash);
  border-color: #FDE68A;
}
.pv-review-cell[data-flagged="true"] {
  box-shadow: inset 0 0 0 2px #F59E0B;
}

/* Legacy Practice & Analysis Classes (Preserved & Upgraded) */
.optrow {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 14px 16px;
  margin-bottom: 10px;
  background: var(--surface);
}
.optrow__inner { display: grid; grid-template-columns: 1.8rem minmax(0, 1fr); gap: 8px; }
.optrow__id { font-family: var(--mono); font-weight: 700; color: var(--ink-2); }
.optrow__en { font-family: var(--serif); font-size: var(--fs-md); line-height: 1.65; margin: 0; }
.optrow__cn { color: var(--ink-2); margin: 6px 0 0; font-size: 14.5px; }
.stamps { display: flex; gap: 8px; align-items: center; }
.slot {
  border: 1.5px solid #94A3B8;
  background: var(--zone);
  border-radius: var(--r);
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 700;
  color: var(--ink-2);
  padding: 6px 12px;
  cursor: pointer;
  min-width: 4.2rem;
}
.slot--best[aria-pressed="true"] { background: var(--best); border-color: var(--best); color: #fff; }
.slot--worst[aria-pressed="true"] { background: var(--worst); border-color: var(--worst); color: #fff; }

.rule { border: 0; border-top: 1px solid var(--line); margin: 24px 0 16px; }
.ex { display: grid; gap: 12px; }
.ex__row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 14px;
  align-items: start;
  padding: 14px 16px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-2);
  background: var(--surface);
}
.ex__tag {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--r);
  padding: 4px 8px;
  text-align: center;
}
.ex__tag--best { background: var(--best-wash); color: var(--best); border: 1px solid var(--best-border); }
.ex__tag--worst { background: var(--worst-wash); color: var(--worst); border: 1px solid var(--worst-border); }
.ex__opt { margin: 0; font-weight: 600; }
.ex__why { margin: 6px 0 0; color: var(--ink-2); font-size: 14px; line-height: 1.6; }

.markerbox {
  border-left: 4px solid var(--blue);
  background: var(--blue-light);
  padding: 12px 16px;
  margin-top: 16px;
  border-radius: 0 var(--r) var(--r) 0;
}
.markerbox__st { margin: 4px 0 0; color: var(--ink); font-size: 14px; }
.markerbox__tag { font-family: var(--mono); font-size: 12px; color: var(--blue); margin-top: 6px; font-weight: 600; }

.fhtable { display: grid; gap: 8px; margin-top: 10px; }
.fhrow {
  display: grid;
  grid-template-columns: 2rem 90px 1fr auto;
  gap: 12px;
  align-items: baseline;
  border: 1px solid var(--line-2);
  background: var(--surface);
  border-radius: var(--r);
  padding: 10px 14px;
}
.fhcode { font-family: var(--mono); font-size: 13.5px; font-weight: 700; letter-spacing: 0.04em; }
.fhcode--best { color: var(--best); }
.fhcode--worst { color: var(--worst); }
.tagbest, .tagworst {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  border-radius: var(--r);
  padding: 2px 8px;
  white-space: nowrap;
}
.tagbest { background: var(--best-wash); color: var(--best); border: 1px solid var(--best-border); }
.tagworst { background: var(--worst-wash); color: var(--worst); border: 1px solid var(--worst-border); }
.note {
  border: 1px solid #FDE68A;
  background: var(--warn-wash);
  color: var(--warn);
  padding: 10px 14px;
  font-size: 13px;
  margin-top: 12px;
  border-radius: var(--r);
}
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

/* Responsive Breakpoints */
@media (max-width: 900px) {
  .cc-hero__inner { grid-template-columns: 1fr; }
  .cc-tracks-grid { grid-template-columns: repeat(2, 1fr); }
  .cc-modes-grid { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .cc-tracks-grid { grid-template-columns: 1fr; }
  .pv-matrix__head { display: none; }
  .pv-matrix__row, .pv-matrix__row--ki {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .ex__row { grid-template-columns: 1fr; }
  .fhrow { grid-template-columns: 1fr; }
}