/* Modern refresh: one design language for every page. Loaded after style.css.
   Tokens first, then the shell, shared surfaces, and page-specific adjustments.
   Palette: #F7FBFB, #D6F0EE, #2A9D8F, #E76F51, #264653 */
:root {
  --bg: #F7FBFB;
  --bg-alt: #D6F0EE;
  --card: #ffffff;
  --fg: #264653;
  --muted: #4a6b6c;
  --faint: #81a49f;
  --border: #c8e3e1;
  --border-strong: #96cbc7;
  --brand: #2A9D8F;
  --brand-2: #264653;
  --brand-accent: #E76F51;
  --brand-hover: #21867a;
  --brand-soft: #D6F0EE;
  --link: #2A9D8F;
  --header: rgba(247, 251, 251, 0.94);
  --gradient: linear-gradient(180deg, #2A9D8F 0%, #264653 100%);
  --shadow-sm: 0 1px 3px rgba(38, 70, 83, 0.05);
  --shadow: 0 4px 12px -2px rgba(38, 70, 83, 0.08), 0 1px 3px rgba(38, 70, 83, 0.04);
  --shadow-lg: 0 10px 25px -4px rgba(38, 70, 83, 0.12), 0 4px 10px -2px rgba(38, 70, 83, 0.06);
  --radius: 14px;
  --radius-sm: 10px;
  --h1: clamp(28px, 3.2vw, 38px);
  --h2: 21px;
  --ok: #2A9D8F;
  --ok-bg: #D6F0EE;
  --err: #E76F51;
  --err-bg: rgba(231, 111, 81, 0.10);
  --warn: #E76F51;
  --warn-bg: rgba(231, 111, 81, 0.08);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1c323c; --bg-alt: #264653; --card: #203a45; --fg: #F7FBFB; --muted: #D6F0EE; --faint: #8bb5b3;
    --border: #2d505c; --border-strong: #2A9D8F; --brand: #2A9D8F; --brand-2: #D6F0EE; --brand-accent: #E76F51; --brand-hover: #36b5a5;
    --brand-soft: rgba(42, 157, 143, 0.22); --link: #5ec7bb; --header: rgba(28, 50, 60, 0.94);
    --gradient: linear-gradient(180deg, #2A9D8F 0%, #264653 100%);
    --shadow: 0 10px 30px -12px rgba(0, 0, 0, 0.5); --shadow-lg: 0 24px 48px -16px rgba(0, 0, 0, 0.65);
    --ok: #2A9D8F; --ok-bg: rgba(42, 157, 143, 0.2); --err: #E76F51; --err-bg: rgba(231, 111, 81, 0.2);
    --warn: #E76F51; --warn-bg: rgba(231, 111, 81, 0.15);
  }
}
:root[data-theme="dark"] {
  --bg: #1c323c; --bg-alt: #264653; --card: #203a45; --fg: #F7FBFB; --muted: #D6F0EE; --faint: #8bb5b3;
  --border: #2d505c; --border-strong: #2A9D8F; --brand: #2A9D8F; --brand-2: #D6F0EE; --brand-accent: #E76F51; --brand-hover: #36b5a5;
  --brand-soft: rgba(42, 157, 143, 0.22); --link: #5ec7bb; --header: rgba(28, 50, 60, 0.94);
  --gradient: linear-gradient(180deg, #2A9D8F 0%, #264653 100%);
  --shadow: 0 10px 30px -12px rgba(0, 0, 0, 0.5); --shadow-lg: 0 24px 48px -16px rgba(0, 0, 0, 0.65);
  --ok: #2A9D8F; --ok-bg: rgba(42, 157, 143, 0.2); --err: #E76F51; --err-bg: rgba(231, 111, 81, 0.2);
  --warn: #E76F51; --warn-bg: rgba(231, 111, 81, 0.15);
}

/* Course accents: unified vibrant brand palette */
[data-code] { --code: #264653; --code-soft: #D6F0EE; }
[data-code="P"], [data-code="FM"], [data-code="SRM"] { --code: #264653; --code-soft: #D6F0EE; }
[data-code="LIP"], [data-code="APR"], [data-code="EXP"], [data-code="IMR"] { --code: #2A9D8F; --code-soft: #D6F0EE; }
[data-code="ACT"], [data-code="ALL"] { --code: #E76F51; --code-soft: rgba(231, 111, 81, 0.12); }
.course-code, .course-code[data-code], .catalog-code, .catalog-code[data-code] {
  color: #264653 !important;
  background: #D6F0EE !important;
  border: 1px solid #96cbc7 !important;
  border-radius: 6px !important;
  padding: 2px 8px !important;
  font-size: 11.5px !important;
  font-weight: 700 !important;
  letter-spacing: 0.03em !important;
  line-height: 1.4 !important;
}
:root[data-theme="dark"] .course-code,
:root[data-theme="dark"] .course-code[data-code],
:root[data-theme="dark"] .catalog-code,
:root[data-theme="dark"] .catalog-code[data-code] {
  color: #F7FBFB !important;
  background: #2A9D8F !important;
  border-color: #36b5a5 !important;
}

/* Shell */
body { background: var(--bg); }
.site-header { min-height: 64px; background: var(--header); border-bottom: 1px solid var(--border); backdrop-filter: blur(12px); }
.brand { font-size: 19px; font-weight: 750; letter-spacing: -0.02em; color: var(--fg); }
.brand-mark { border-radius: 8px; box-shadow: 0 1px 3px rgba(38, 70, 83, 0.15); }
.site-nav { gap: 4px; }
.site-nav > a:not(.button) { padding: 7px 12px; font-size: 14px; border-radius: 8px; color: var(--muted); font-weight: 500; }
.site-nav > a:not(.button):hover { color: var(--brand); background: var(--bg-alt); }
.site-nav > a.is-current { color: var(--brand); background: var(--bg-alt); font-weight: 600; }
.site-footer { background: transparent; }

/* Buttons: crisp vibrant teal primary & clean secondary */
button, .button {
  border-radius: 9px;
  font-weight: 600;
  font-size: 13.5px;
  letter-spacing: -0.005em;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease, border-color 0.12s ease, color 0.12s ease;
}
button:not(.secondary):not(.link):not(.chip):not(.tab):not(.example-option):not(.course-card):not(.chapter-option):not(.nav-toggle):not(.quiz-tab):not(.filter-pill),
.button:not(.secondary) {
  background: var(--brand);
  border: 1px solid var(--brand);
  color: #ffffff;
  box-shadow: 0 1px 2px rgba(38, 70, 83, 0.12);
}
button:not(.secondary):not(.link):not(.chip):not(.tab):not(.example-option):not(.course-card):not(.chapter-option):not(.nav-toggle):not(.quiz-tab):not(.filter-pill):hover:not(:disabled),
.button:not(.secondary):hover {
  background: var(--brand-hover);
  border-color: var(--brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(42, 157, 143, 0.25);
}
button.secondary, .button.secondary, .secondary-btn {
  background: var(--card) !important;
  border: 1px solid var(--border-strong) !important;
  color: var(--fg) !important;
  box-shadow: var(--shadow-sm) !important;
}
button.secondary:hover:not(:disabled), .button.secondary:hover, .secondary-btn:hover {
  border-color: var(--brand) !important;
  color: var(--brand) !important;
  background: var(--bg-alt) !important;
  transform: translateY(-1px);
}
.nav-toggle { background: transparent; color: var(--fg); }
.chip { border-radius: 999px; font-size: 13px; }
.chip.is-active, .chip.is-active:hover:not(:disabled) { background: var(--brand); border-color: var(--brand); color: #ffffff; }

/* Inner page header block: clean architectural card with subtle fresh tint */
.view > section > .page-head:first-child,
.view > section > .back-link + .page-head,
.view > section > .crumbs + .page-head,
.manual-container > .manual-hero,
.view > .page-head:first-child {
  position: relative;
  overflow: hidden;
  margin-bottom: 24px;
  padding: 26px 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
}
.page-head h1 { letter-spacing: -0.025em; color: var(--fg); }
.page-head p { font-size: 15.5px; color: var(--muted); }
.view { padding-top: 28px; }

/* Shared surfaces */
.page-card, .side-card, .tile, .course-hub-card, .practice-course, .exam-course-card, .manual-card, .landing-course, .lesson-card, .syllabus, .set-panel, .q-card, .price-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow-sm);
}
.course-hub-card, .practice-course, .exam-course-card, .manual-card, .landing-course, .lesson-card, .tile, .price-card {
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.course-hub-card:hover, .practice-course:hover, .exam-course-card:hover, .manual-card:hover, .landing-course:hover, .lesson-card:hover, .tile:hover, .price-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--border-strong);
}
.badge { border-radius: 999px; font-size: 11.5px; font-weight: 600; padding: 3px 10px; }
.eyebrow { letter-spacing: 0.06em; text-transform: uppercase; font-size: 11.5px; font-weight: 600; color: var(--muted); }

/* Landing */
.hero {
  background: linear-gradient(180deg, #F7FBFB 0%, #D6F0EE 100%);
  border-bottom: 1px solid var(--border);
}
.hero h1 { letter-spacing: -0.035em; color: var(--fg); }
.band { background: var(--bg-alt); border-block: 1px solid var(--border); }
.section-head h2 { letter-spacing: -0.025em; color: var(--fg); }
.steps li { border-radius: var(--radius); box-shadow: var(--shadow-sm); }

/* Pricing: clean typography, vibrant teal buttons */
.price-card { color: var(--fg); padding: 26px; box-shadow: var(--shadow-sm); }
.price-card .muted, .price-desc, .catalog-scope, .price small { color: var(--muted); }
.price { color: var(--fg); font-weight: 800; letter-spacing: -0.03em; background: none; -webkit-text-fill-color: currentColor; }
.price small { color: var(--muted); -webkit-text-fill-color: var(--muted); font-weight: 500; }
.price-card .button { background: var(--brand); border-color: var(--brand); color: #fff; }
.price-card .button:hover { background: var(--brand-hover); border-color: var(--brand-hover); }
.price-card .ticks li::before { border-color: var(--brand); }
.catalog-preview { color: var(--link); }

/* Courses hub */
.curriculum-hero-banner {
  background: #264653 !important;
  color: #F7FBFB !important;
  border: 1px solid #2A9D8F !important;
  border-radius: 16px !important;
  box-shadow: var(--shadow) !important;
}
.course-hub-card { padding: 24px; border-radius: 16px; display: flex; flex-direction: column; height: 100%; }
.course-hub-card h2 { letter-spacing: -0.02em; font-size: 19px; margin: 4px 0 8px; }
.course-alignment { color: var(--muted); font-size: 13px; }
.metric-pill { border-radius: 6px; font-size: 12px; background: var(--bg-alt); border: 1px solid var(--border); padding: 3px 8px; }
.course-card-actions { margin-top: auto; padding-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.course-card-actions .button { min-height: 38px; padding: 7px 14px; font-size: 13px; }

/* Practice home and exam home: tighter cards */
.practice-courses, .exam-course-grid { gap: 20px; }
.practice-course, .exam-course-card { padding: 24px 26px; gap: 10px; }
.practice-course h2, .exam-course-card h2 { margin: 4px 0 0; letter-spacing: -0.02em; }
.practice-course p, .exam-course-card p { margin: 0; }
.practice-course .button, .exam-course-card .button { margin-top: 14px; }

/* Practice page */
.set-panel { padding: 16px 20px; border-radius: 16px; }
.chapter-option.is-active { background: var(--brand-soft); color: var(--brand); }
.q-card { border-radius: 20px; box-shadow: var(--shadow); padding: 28px; }
.q-option { border-radius: 14px; }

/* Lessons and manuals */
.manual-card { padding: 22px; border-radius: 18px; }
.syllabus { border-radius: 18px; }
.lesson-pager-link { border-radius: 16px; }
.formula { border-radius: 14px; }
.objectives { border-radius: 16px; background: linear-gradient(135deg, var(--brand-soft), color-mix(in srgb, var(--brand-2) 8%, var(--card))); }

@media (max-width: 640px) {
  .view > section > .page-head:first-child,
  .view > section > .back-link + .page-head,
  .view > section > .crumbs + .page-head,
  .manual-container > .manual-hero,
  .view > .page-head:first-child { padding: 22px 20px; border-radius: 18px; }
  .q-card { padding: 20px; }
}

/* Practice home: course colour runs along the top edge. */
.practice-courses { grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.practice-course { position: relative; overflow: hidden; }
.practice-course::before { content: ''; position: absolute; inset: 0 0 auto 0; height: 4px; background: var(--code, var(--brand)); }
.practice-course-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; width: 100%; }
.practice-course-stats { display: flex; flex-wrap: wrap; gap: 6px 18px; color: var(--muted); font-size: 14px; }
.practice-course-stats strong { color: var(--fg); font-size: 18px; font-weight: 750; margin-right: 2px; }

/* Practice page: chapter title, source and mistakes sit in one toolbar card. */
.practice-toolbar {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px 24px;
  margin: 0 0 14px; padding: 18px 22px;
  background: var(--card); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow-sm);
}
.practice-toolbar h2 { margin: 2px 0 0; font-size: 22px; }
.practice-toolbar p { margin: 2px 0 0; }
.practice-toolbar .eyebrow { margin: 0; padding: 0; background: none; font-size: 11px; color: var(--brand); }
.practice-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.practice-controls select { width: auto; min-width: 210px; min-height: 42px; border-radius: 12px; }
.practice-controls .chip { min-height: 42px; }
.set-panel select { border-radius: 12px; }

/* The set controls form the toolbar's second row. */
.practice-toolbar .set-panel.in-toolbar {
  flex: 1 1 100%; display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px 16px;
  margin: 4px 0 0; padding: 16px 0 0; border: 0; border-top: 1px solid var(--border); border-radius: 0;
  background: none; box-shadow: none;
}
.practice-toolbar .set-panel.in-toolbar:hover { transform: none; box-shadow: none; }
.practice-toolbar .set-panel.in-toolbar label { display: grid; gap: 6px; font-size: 12px; font-weight: 600; color: var(--muted); }
.practice-toolbar .set-panel.in-toolbar select { min-width: 150px; min-height: 42px; }
.practice-toolbar .set-panel.in-toolbar button { min-height: 42px; padding: 0 26px; }
.practice-toolbar .set-panel.in-toolbar .set-progress { margin: 0 0 10px auto; }
.practice-toolbar { transition: none; }
.practice-toolbar:hover { transform: none; }

/* Chips keep their own width inside column cards; the last action sits at the bottom. */
.manual-card .catalog-code, .manual-card .course-code, .exam-course-card .course-code { align-self: flex-start; }
.exam-course-card > :last-child { margin-top: auto; }
.manual-card > :last-child { margin-top: auto; color: var(--brand); font-weight: 600; }

@media (max-width: 640px) {
  .practice-toolbar { flex-direction: column; align-items: stretch; padding: 16px; }
  .practice-controls, .practice-toolbar .set-panel.in-toolbar { display: grid; grid-template-columns: 1fr 1fr; align-items: end; }
  .practice-controls select { min-width: 0; width: 100%; grid-column: 1 / -1; }
  .practice-controls .chip { grid-column: 1 / -1; }
  .practice-toolbar .set-panel.in-toolbar select { min-width: 0; width: 100%; }
  .practice-toolbar .set-panel.in-toolbar button { grid-column: 1 / -1; }
}

/* ---------- Manuals library ---------- */
.manual-toolbar {
  position: sticky; top: 72px; z-index: 20;
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px;
  margin: 0 0 8px; padding: 12px 14px;
  background: color-mix(in srgb, var(--card) 88%, transparent); backdrop-filter: blur(10px);
  border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow-sm);
}
.manual-search {
  flex: 1 1 260px; min-height: 42px; padding: 0 14px; border: 1px solid var(--border); border-radius: 12px;
  background: var(--bg);
  color: var(--fg); font: inherit; font-size: 14px;
}
.manual-search:focus { outline: 2px solid color-mix(in srgb, var(--brand) 45%, transparent); outline-offset: 1px; border-color: var(--brand); }
.manual-jumps { display: flex; flex-wrap: wrap; gap: 8px; }
.manual-jumps .chip { min-height: 36px; font-size: 13px; }
.manual-empty { padding: 32px 0; text-align: center; }
.manuals-catalog { gap: 40px; }
.manual-group { scroll-margin-top: 150px; }
.manual-group[hidden], .manual-card[hidden] { display: none; }
.manual-group-head {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 16px;
  padding-left: 16px; border-left: 4px solid var(--code, var(--brand));
}
.manual-group-head h2 { margin: 0 0 4px; font-size: 22px; letter-spacing: -0.02em; }
.manual-group-head p { margin: 0; font-size: 14px; max-width: 720px; }
.manual-count { flex: none; font-size: 12.5px; font-weight: 600; color: var(--muted); padding: 5px 10px; border-radius: 999px; background: var(--bg-alt); }
.manual-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.manual-card {
  position: relative; overflow: hidden; display: flex; flex-direction: column; gap: 12px;
  min-height: 168px; padding: 22px 22px 18px; text-decoration: none;
}
.manual-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 4px; background: var(--code, var(--brand)); opacity: .85; }
.manual-card-top { display: flex; align-items: center; gap: 10px; }
.manual-kind { font-size: 11.5px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.manual-card h3 { font-size: 16.5px; line-height: 1.4; letter-spacing: -0.01em; }
.manual-card .manual-read { margin-top: auto; font-size: 13.5px; font-weight: 600; color: var(--code, var(--brand)); }
.manual-card:hover .manual-read { text-decoration: underline; }

/* ---------- Manual reader ---------- */
.manual-container { gap: 20px; }
.manual-crumbs { margin: 0; }
.manual-hero { position: relative; overflow: hidden; padding-top: 30px; }
.manual-hero::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 5px; background: var(--code, var(--brand)); }
.manual-hero-kicker { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 0 0 10px; font-size: 13px; font-weight: 600; color: var(--muted); }
.manual-hero h1 { margin: 0; max-width: 900px; }
.manual-hero-meta { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 12px 0 0; font-size: 14px; color: var(--muted); }
.manual-hero-meta span + span::before { content: "·"; margin-right: 18px; }
.manual-meta {
  display: grid; grid-template-columns: max-content 1fr; gap: 8px 18px;
  max-width: 900px; margin: 20px 0 0; padding: 16px 18px;
  background: color-mix(in srgb, var(--card) 70%, transparent); border: 1px solid var(--border); border-radius: 14px;
  font-size: 14px; line-height: 1.55;
}
.manual-meta dt { font-weight: 700; color: var(--fg); }
.manual-meta dd { margin: 0; color: var(--muted); }

.manual-layout { grid-template-columns: minmax(0, 1fr) 280px; gap: 32px; }
.manual-main { min-width: 0; display: flex; flex-direction: column; gap: 20px; }
.manual-article {
  padding: 44px 56px; border-radius: 20px; box-shadow: var(--shadow-sm);
  font-size: 16px; line-height: 1.75; overflow-x: visible;
}
.manual-article > :first-child { margin-top: 0; }
.manual-article h2 {
  scroll-margin-top: 90px; margin: 44px 0 16px; padding: 0 0 10px; border-bottom: 1px solid var(--border);
  font-size: 23px; line-height: 1.3; letter-spacing: -0.02em;
}
.manual-article h3 { scroll-margin-top: 90px; margin: 30px 0 10px; font-size: 18px; letter-spacing: -0.01em; color: var(--fg); }
.manual-article h4 { margin: 22px 0 8px; font-size: 15px; text-transform: none; color: var(--code, var(--brand)); }
.manual-article h1 { font-size: 26px; border: 0; }
.manual-article strong { font-weight: 650; color: var(--fg); }
.manual-article code { padding: 1px 6px; border-radius: 6px; background: var(--bg-alt); font-size: .88em; }
.manual-article .manual-link { color: var(--brand); text-underline-offset: 3px; }
.manual-para { margin: 0 0 16px; }
.manual-hr { margin: 36px 0; border: 0; border-top: 1px dashed var(--border); }
.manual-list { margin: 0 0 18px; padding-left: 24px; }
.manual-list li { margin: 6px 0; padding-left: 4px; }
.manual-list li::marker { color: var(--code, var(--brand)); font-weight: 700; }
.manual-list .manual-list { margin: 6px 0 4px; }
.manual-article .display-math {
  display: block; margin: 18px 0; padding: 16px 20px; overflow-x: auto; overflow-y: hidden;
  background: var(--bg-alt); border-radius: 14px; text-align: center;
}
.manual-quote { margin: 20px 0; padding: 4px 0 4px 20px; border-left: 3px solid var(--border); color: var(--muted); font-style: normal; }
.manual-quote > :last-child, .manual-callout-body > :last-child { margin-bottom: 0; }

.manual-callout {
  --tone: var(--brand);
  margin: 24px 0; padding: 16px 20px 18px; border-radius: 14px;
  background: color-mix(in srgb, var(--tone) 7%, var(--card)); border: 1px solid color-mix(in srgb, var(--tone) 28%, transparent);
}
.manual-callout.is-objectives { --tone: #2A9D8F; }
.manual-callout.is-tip { --tone: #2A9D8F; }
.manual-callout.is-important { --tone: #264653; }
.manual-callout.is-warning { --tone: #E76F51; }
.manual-callout.is-caution { --tone: #E76F51; }
.manual-callout-title { display: flex; align-items: center; gap: 10px; margin: 0 0 8px; font-size: 13px; font-weight: 750; letter-spacing: .05em; text-transform: uppercase; color: var(--tone); }
.manual-callout-icon { display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--tone); color: #fff; font-size: 12px; letter-spacing: 0; }
.manual-callout-body { font-size: 15px; }
.manual-callout .display-math { background: color-mix(in srgb, var(--tone) 6%, var(--card)); }

.manual-code { margin: 20px 0; border-radius: 14px; overflow: hidden; border: 1px solid var(--border); background: #264653; }
.manual-code figcaption { padding: 8px 16px; font: 600 11.5px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .06em; text-transform: uppercase; color: #D6F0EE; border-bottom: 1px solid #2A9D8F; }
.manual-code pre { margin: 0; padding: 16px 18px; overflow-x: auto; background: transparent; color: #F7FBFB; font-size: 13.5px; line-height: 1.6; border: 0; border-radius: 0; }
.manual-code code { padding: 0; background: none; font-size: inherit; color: inherit; }

.manual-table-wrap { margin: 22px 0; border-radius: 14px; border: 1px solid var(--border); overflow-x: auto; box-shadow: none; }
.manual-table { width: 100%; border-collapse: collapse; }
.manual-table th, .manual-table td { padding: 10px 14px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; line-height: 1.5; }
.manual-table th { background: var(--bg-alt); font-size: 12.5px; letter-spacing: .02em; }
.manual-table tbody tr:last-child td { border-bottom: 0; }
.manual-table tbody tr:nth-child(even) td { background: color-mix(in srgb, var(--bg-alt) 45%, transparent); }

.manual-sidebar { top: 88px; max-height: calc(100vh - 108px); }
.manual-toc-card { display: flex; flex-direction: column; min-height: 0; overflow: hidden; padding: 18px 10px 12px 18px; }
.manual-toc-card h3 { margin: 0 0 10px; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.manual-toc-nav { display: flex; flex-direction: column; gap: 1px; overflow-y: auto; padding-right: 8px; border-left: 2px solid var(--border); }
.manual-toc-nav .toc-item {
  display: block; margin-left: -2px; padding: 6px 10px; border-left: 2px solid transparent;
  font-size: 13px; line-height: 1.4; color: var(--muted); text-decoration: none; border-radius: 0 8px 8px 0;
}
.manual-toc-nav .toc-level-3 { padding-left: 22px; font-size: 12.5px; }
.manual-toc-nav .toc-item:hover { color: var(--fg); background: var(--bg-alt); }
.manual-toc-nav .toc-item.is-active { color: var(--brand); border-left-color: var(--brand); background: color-mix(in srgb, var(--brand) 8%, transparent); font-weight: 600; }
.manual-action-card { flex: none; }
.manual-action-card h3 { margin: 0 0 6px; font-size: 16px; }
.manual-action-card .button { width: 100%; margin-top: 10px; justify-content: center; }

.manual-footer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 0; }
.manual-nav-prev, .manual-nav-next {
  display: flex; flex-direction: column; gap: 4px; padding: 16px 20px; text-decoration: none;
  background: var(--card); border: 1px solid var(--border); border-radius: 16px; transition: border-color .15s, transform .15s;
}
.manual-nav-prev:hover, .manual-nav-next:hover { border-color: var(--brand); transform: translateY(-1px); }
.manual-nav-prev strong, .manual-nav-next strong { color: var(--fg); font-size: 15px; }
.manual-nav-next { text-align: right; align-items: flex-end; }

.manual-mobile-toc { display: none; margin: 0; padding: 12px 16px; background: var(--card); border: 1px solid var(--border); border-radius: 14px; }
.manual-mobile-toc .manual-toc-nav { max-height: 50vh; margin-top: 10px; }

@media (max-width: 1080px) {
  .manual-layout { grid-template-columns: 1fr; }
  .manual-sidebar { display: none; }
  .manual-mobile-toc { display: block; }
}
@media (max-width: 640px) {
  .manual-toolbar { top: 64px; }
  .manual-jumps { flex-wrap: nowrap; overflow-x: auto; width: 100%; }
  .manual-jumps .chip { flex: none; }
  .manual-group-head { flex-direction: column; align-items: flex-start; }
  .manual-article { padding: 24px 18px; font-size: 15.5px; border-radius: 16px; }
  .manual-article h2 { font-size: 20px; }
  .manual-meta { grid-template-columns: 1fr; gap: 2px; }
  .manual-meta dd { margin-bottom: 8px; }
  .manual-footer-nav { grid-template-columns: 1fr; }
  .manual-hero-meta span + span::before { margin-right: 10px; }
}

.manual-hero { display: block; }
.manual-hero-kicker .muted::before { content: "·"; margin-right: 10px; }
.manuals-catalog > .manual-toolbar { margin-top: -18px; }
.manual-hero-sub { margin: 10px 0 0; max-width: 860px; font-size: 17px; line-height: 1.5; color: var(--muted); }

/* ---------- Manual block templates ---------- */
.manual-article figure { margin: 26px 0; }
.manual-figure-title {
  margin: 0 0 10px; font-size: 12.5px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted);
}
.manual-table-figure .manual-table-wrap { margin: 0; }
.manual-table.has-row-heads tbody th { background: var(--bg-alt); font-size: 13.5px; font-weight: 650; white-space: nowrap; }
.manual-table td .katex, .manual-table th .katex { font-size: 1.02em; }

/* Drawings: the grid shrinks with the column; very wide ones scroll as a last resort. */
.manual-diagram {
  container-type: inline-size;
  padding: 18px 20px; border-radius: 16px; border: 1px solid var(--border);
  background: linear-gradient(var(--bg-alt), var(--bg-alt)) padding-box;
}
.manual-diagram pre {
  margin: 0; padding: 0; overflow-x: auto; background: none; border: 0; color: var(--fg);
  font: 500 max(8px, min(13.5px, calc(100cqi / var(--cols, 80) / 0.61)))/1.45 ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  width: max-content; max-width: 100%; margin-inline: auto;
}
.manual-diagram code { padding: 0; background: none; font: inherit; color: inherit; }

/* Branch: a root topic and one card per branch. */
.manual-branch { display: flex; flex-direction: column; align-items: center; }
.manual-branch-root {
  position: relative; margin: 0 0 28px; padding: 10px 20px; border-radius: 999px;
  background: var(--code, var(--brand)); color: #fff; font-weight: 700; font-size: 15px; text-align: center;
}
.manual-branch-root::after {
  content: ""; position: absolute; left: 50%; top: 100%; width: 2px; height: 28px; background: var(--border); transform: translateX(-1px);
}
.manual-branch-grid {
  position: relative; width: 100%; display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  padding-top: 16px; border-top: 2px solid var(--border);
}
.manual-branch-card {
  padding: 16px 18px; border-radius: 14px; background: var(--card); border: 1px solid var(--border);
  border-top: 3px solid var(--code, var(--brand)); box-shadow: var(--shadow-sm); font-size: 14.5px; line-height: 1.55;
}
.manual-branch-card h4 { margin: 0 0 6px; font-size: 15.5px; color: var(--fg); text-transform: none; letter-spacing: 0; }
.manual-branch-note { margin: 0 0 4px; color: var(--muted); }
.manual-branch-card ul { margin: 8px 0 0; padding-left: 18px; }
.manual-branch-card li { margin: 4px 0; }
.manual-branch-card li::marker { color: var(--code, var(--brand)); }

/* Steps: numbered cards joined by a rail. */
.manual-steps ol { list-style: none; margin: 0; padding: 0; counter-reset: step; }
.manual-steps > ol > li { position: relative; padding-left: 46px; counter-increment: step; }
.manual-steps > ol > li::before {
  content: counter(step); position: absolute; left: 0; top: 12px; width: 30px; height: 30px; border-radius: 50%;
  display: grid; place-items: center; background: var(--code, var(--brand)); color: #fff; font-size: 13px; font-weight: 700;
}
.manual-steps > ol > li:not(:last-child)::after {
  content: ""; position: absolute; left: 14px; top: 46px; bottom: -12px; width: 2px; background: var(--border);
}
.manual-steps > ol > li + li { margin-top: 12px; }
.manual-step-card { padding: 14px 18px; border-radius: 14px; background: var(--card); border: 1px solid var(--border); font-size: 14.5px; line-height: 1.55; }
.manual-step-card strong { display: block; font-size: 15px; }
.manual-step-card p { margin: 4px 0 0; color: var(--muted); }
.manual-step-card ul { margin: 6px 0 0; padding-left: 18px; color: var(--muted); }
.manual-step-via { margin: 0 0 6px; font-size: 12.5px; font-style: italic; color: var(--muted); }
.manual-steps-note { margin: 12px 0 0 46px; font-size: 13.5px; color: var(--muted); }

/* Flow (from mermaid): rows of nodes, arrows between rows. */
.manual-flow { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 20px; border-radius: 16px; background: var(--bg-alt); }
.manual-flow-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; width: 100%; }
.manual-flow-node {
  display: flex; flex-direction: column; gap: 6px; flex: 1 1 180px; max-width: 320px; padding: 12px 16px; border-radius: 12px;
  background: var(--card); border: 1px solid var(--border); font-size: 14px; line-height: 1.45; text-align: center; box-shadow: var(--shadow-sm);
}
.manual-flow-node.is-decision { border: 2px dashed var(--code, var(--brand)); font-weight: 600; }
.manual-flow-edge {
  align-self: center; padding: 2px 8px; border-radius: 999px; font-size: 11.5px; font-weight: 600;
  background: color-mix(in srgb, var(--code, var(--brand)) 12%, transparent); color: var(--code, var(--brand));
}
.manual-flow-arrow { font-size: 18px; line-height: 1; color: var(--muted); }
.manual-flow-links { margin: 8px 0 0; padding: 0; list-style: none; font-size: 13px; color: var(--muted); text-align: center; }

/* Worked problems, examples and traps. */
.manual-card-block {
  --tone: var(--code, var(--brand));
  margin: 28px 0; padding: 20px 24px 22px; border-radius: 16px;
  background: color-mix(in srgb, var(--tone) 5%, var(--card)); border: 1px solid color-mix(in srgb, var(--tone) 25%, var(--border));
}
.manual-card-block.is-trap { --tone: #d97706; }
.manual-card-block.is-archetype { --tone: #7c3aed; }
.manual-card-label {
  display: inline-block; margin: 0 0 8px; padding: 3px 10px; border-radius: 999px; font-size: 11.5px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase;
  background: color-mix(in srgb, var(--tone) 14%, transparent); color: var(--tone);
}
.manual-card-block > h3, .manual-card-block > h4 { margin: 0 0 12px; scroll-margin-top: 90px; }
.manual-card-block > :last-child { margin-bottom: 0; }

/* Section stepper and paged navigation. */
.manual-stepper { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 20px; }
.manual-stepper p { margin: 0; font-size: 14px; }
.manual-stepper ol { display: flex; flex: 1 1 220px; max-width: 420px; gap: 4px; margin: 0; padding: 0; list-style: none; }
.manual-stepper li { flex: 1; }
.manual-stepper a { display: block; height: 6px; border-radius: 999px; background: var(--border); }
.manual-stepper .is-done a { background: color-mix(in srgb, var(--code, var(--brand)) 45%, transparent); }
.manual-stepper .is-current a { background: var(--code, var(--brand)); }
.manual-stepper a:hover { background: var(--brand); }
.manual-hero.is-compact { padding-top: 22px; padding-bottom: 22px; }
.manual-hero-title { margin: 0; font-size: 20px; font-weight: 700; color: var(--fg); letter-spacing: -0.01em; }
.manual-toc-nav .toc-level-2 { display: flex; gap: 10px; align-items: baseline; }
.toc-num { flex: none; min-width: 18px; font-size: 11.5px; font-weight: 700; color: var(--faint, var(--muted)); }
.manual-toc-nav .toc-item.is-open { color: var(--fg); font-weight: 650; border-left-color: var(--code, var(--brand)); background: color-mix(in srgb, var(--brand) 6%, transparent); }
.manual-toc-nav .toc-item.is-open .toc-num { color: var(--code, var(--brand)); }
.manual-toc-nav .toc-level-3 { padding-left: 38px; }
.manual-nav-next.is-primary { border-color: color-mix(in srgb, var(--brand) 40%, var(--border)); background: color-mix(in srgb, var(--brand) 6%, var(--card)); }
.manual-nav-next.is-primary strong { color: var(--brand); }
.manual-mobile-toc summary { display: flex; flex-direction: column; gap: 2px; list-style: none; }
.manual-mobile-toc summary span:first-child { font-size: 12px; }

@media (max-width: 640px) {
  .manual-card-block { padding: 16px 16px 18px; margin-inline: -4px; }
  .manual-steps > ol > li { padding-left: 40px; }
  .manual-diagram { padding: 12px; margin-inline: -6px; }
}

.manual-continued { display: flex; flex-direction: column; gap: 2px; margin: 0 0 24px; padding: 0 0 14px; border-bottom: 1px solid var(--border); }
.manual-continued span { font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--code, var(--brand)); }
.manual-continued strong { font-size: 19px; letter-spacing: -0.01em; }
.manual-toc-nav .toc-item { overflow-wrap: anywhere; }
.manual-toc-nav .toc-item.is-elsewhere { opacity: .75; }
.manual-stepper li.is-part { flex: .6; }
.manual-footer-nav { align-items: stretch; margin-top: 0; padding-top: 0; border-top: 0; }
.manual-nav-prev, .manual-nav-next { max-width: none; width: 100%; }

/* Answer choices and hidden solutions inside worked problems. */
.manual-choices { display: grid; grid-template-columns: 1fr; gap: 8px; margin: 14px 0 18px; padding: 0; list-style: none; }
.manual-choices li {
  display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 12px;
  background: var(--card); border: 1px solid var(--border); font-size: 14.5px; line-height: 1.4;
}
.manual-choice-key {
  flex: none; display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%;
  background: var(--bg-alt); color: var(--muted); font-size: 12px; font-weight: 700;
}
.manual-solution { margin: 16px 0 0; border-top: 1px dashed color-mix(in srgb, var(--tone, var(--brand)) 35%, var(--border)); padding-top: 14px; }
.manual-solution > summary {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px; border-radius: 999px; cursor: pointer; list-style: none;
  background: var(--card); border: 1px solid color-mix(in srgb, var(--tone, var(--brand)) 40%, var(--border));
  color: var(--tone, var(--brand)); font-size: 14px; font-weight: 650;
}
.manual-solution > summary::-webkit-details-marker { display: none; }
.manual-solution > summary::before { content: "▸"; transition: transform .15s; }
.manual-solution[open] > summary::before { transform: rotate(90deg); }
.manual-solution[open] > summary { margin-bottom: 14px; }
.manual-solution > summary::after { content: none; }
.manual-article .display-math { text-align: left; }
.manual-article .display-math > .katex-display { margin: 0; }
.manual-article .display-math > .katex-display > .katex { text-align: center; min-width: 100%; display: inline-block; }

/* Key results: the formula card gets an accent edge instead of KaTeX's hard \boxed frame. */
.manual-article .display-math.is-key {
  background: color-mix(in srgb, var(--code, var(--brand)) 8%, var(--card));
  border: 1px solid color-mix(in srgb, var(--code, var(--brand)) 30%, var(--border));
  border-left: 4px solid var(--code, var(--brand));
}

/* Code colours (dark panel in both themes). */
.manual-code .tok-com { color: #7f8ea3; font-style: italic; }
.manual-code .tok-str { color: #a5d6a7; }
.manual-code .tok-num { color: #f8c37d; }
.manual-code .tok-kw { color: #c4a7ff; font-weight: 600; }
.manual-code .tok-def { color: #7dd3fc; font-weight: 600; }
.manual-code .tok-fn { color: #93c5fd; }
.manual-code .tok-deco { color: #f9a8d4; }
.manual-code pre { tab-size: 4; }

/* Cash-flow timeline. */
.manual-timeline { padding: 18px 20px; border-radius: 16px; background: var(--bg-alt); }
.manual-timeline-grid {
  display: grid; grid-template-columns: max-content repeat(var(--cols, 6), minmax(44px, 1fr));
  align-items: center; row-gap: 10px; min-width: max-content; font-size: 14.5px;
}
.manual-timeline-label { padding-right: 16px; font-size: 12px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); }
.manual-timeline-tick {
  position: relative; padding: 0 0 10px; text-align: center; font-weight: 650; color: var(--fg);
  border-bottom: 2px solid var(--code, var(--brand));
}
.manual-timeline-tick::after {
  content: ""; position: absolute; left: 50%; bottom: -6px; width: 10px; height: 10px; border-radius: 50%;
  transform: translateX(-50%); background: var(--card); border: 2px solid var(--code, var(--brand));
}
.manual-timeline-value { margin: 0 4px; padding: 6px 4px; border-radius: 8px; text-align: center; background: var(--card); border: 1px solid var(--border); }
.manual-timeline-value.is-empty { background: none; border-color: transparent; }

/* Static charts. */
.manual-chart { padding: 16px 18px 12px; border-radius: 16px; background: var(--card); border: 1px solid var(--border); }
.chart-svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart-grid { stroke: var(--border); stroke-width: 1; }
.chart-axis { stroke: var(--muted); stroke-width: 1.2; }
.chart-tick { fill: var(--muted); font-size: 12px; }
.chart-label { fill: var(--fg); font-size: 12.5px; font-weight: 600; }
.chart-line { fill: none; stroke-width: 2.6; stroke-linejoin: round; stroke-linecap: round; }
.chart-line.is-dashed { stroke-dasharray: 7 6; }
.chart-mark line { stroke: var(--muted); stroke-dasharray: 4 4; }
.chart-mark text { fill: var(--muted); font-size: 12px; }
.series-1 { --series: var(--brand); }
.series-2 { --series: #0d9488; }
.series-3 { --series: #d97706; }
.series-4 { --series: #db2777; }
.chart-line { stroke: var(--series); }
.chart-series rect { fill: var(--series); opacity: .9; }
.chart-legend { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 6px 0 0; padding: 0; list-style: none; font-size: 13px; color: var(--muted); }
.chart-legend li::before { content: ""; display: inline-block; width: 14px; height: 4px; margin-right: 6px; vertical-align: middle; border-radius: 2px; background: var(--series); }
.chart-caption { margin: 8px 0 0; font-size: 13.5px; color: var(--muted); }

/* ---------- Learn path ---------- */
.learn-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }
.learn-course {
  position: relative; overflow: hidden; display: flex; flex-direction: column; gap: 10px; padding: 24px;
  background: var(--card); border: 1px solid var(--border); border-radius: 20px; box-shadow: var(--shadow-sm);
  color: var(--fg); text-decoration: none; transition: transform .15s, box-shadow .15s, border-color .15s;
}
.learn-course::before { content: ""; position: absolute; inset: 0 0 auto; height: 4px; background: var(--code, var(--brand)); }
.learn-course:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--code, var(--brand)) 40%, var(--border)); }
.learn-course .course-code { align-self: flex-start; }
.learn-course h2 { margin: 0; font-size: 20px; letter-spacing: -0.02em; }
.learn-course p { margin: 0; font-size: 14.5px; }
.learn-course-stats { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 13.5px; color: var(--muted); }
.learn-course-stats strong { color: var(--fg); }
.learn-course-go { margin-top: auto; font-size: 14px; font-weight: 650; color: var(--code, var(--brand)); }

.learn-map {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px 24px; margin: 0 0 24px; padding: 20px 24px;
  border-radius: 18px; border: 1px solid color-mix(in srgb, var(--code, var(--brand)) 30%, var(--border));
  background: color-mix(in srgb, var(--code, var(--brand)) 6%, var(--card));
}
.learn-map h2 { margin: 2px 0 4px; font-size: 20px; }
.learn-map p { margin: 0; }
.learn-map .eyebrow { margin: 0; padding: 0; background: none; color: var(--code, var(--brand)); font-size: 11px; }

.learn-path { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.learn-step { position: relative; display: grid; grid-template-columns: 44px 1fr; gap: 16px; }
.learn-step:not(:last-child)::after { content: ""; position: absolute; left: 21px; top: 48px; bottom: -14px; width: 2px; background: var(--border); }
.learn-step-num {
  display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%;
  background: var(--code, var(--brand)); color: #fff; font-weight: 750; font-size: 16px;
}
.learn-step-body { padding: 16px 20px; background: var(--card); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow-sm); }
.learn-step-body h3 { margin: 0 0 4px; font-size: 17.5px; letter-spacing: -0.01em; }
.learn-step-body h3 a { color: var(--fg); text-decoration: none; }
.learn-step-body h3 a:hover { color: var(--brand); }
.learn-step-body > p { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 0 0 12px; }
.learn-step-actions { display: flex; flex-wrap: wrap; align-items: stretch; gap: 10px; }
.learn-step-actions .button { min-height: 44px; display: inline-flex; align-items: center; }
.learn-deeper {
  display: flex; flex-direction: column; justify-content: center; gap: 1px; padding: 6px 14px; border-radius: 12px; text-decoration: none;
  border: 1px solid var(--border); background: var(--bg-alt); color: var(--fg); font-size: 14px;
}
.learn-deeper:hover { border-color: var(--code, var(--brand)); }
.learn-deeper strong { font-size: 14px; }

.learn-deeper-card {
  display: flex; flex-direction: column; gap: 4px; padding: 18px 20px; border-radius: 16px; text-decoration: none; color: var(--fg);
  border: 1px solid color-mix(in srgb, var(--code, var(--brand)) 35%, var(--border));
  background: color-mix(in srgb, var(--code, var(--brand)) 7%, var(--card));
}
.learn-deeper-card.is-wide { margin: 20px 0; }
.learn-deeper-card .eyebrow { margin: 0; padding: 0; background: none; font-size: 11px; color: var(--code, var(--brand)); }
.learn-deeper-card strong { font-size: 16px; }
.learn-deeper-card:hover strong { color: var(--brand); }
.lesson-side .learn-deeper-card.is-wide { display: none; }

.manual-lessons-card { display: flex; flex-direction: column; gap: 8px; flex: none; }
.manual-lessons-card h3 { margin: 0 0 2px; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.manual-lessons-card a { display: flex; flex-direction: column; gap: 2px; padding: 8px 10px; border-radius: 10px; text-decoration: none; color: var(--fg); background: var(--bg-alt); }
.manual-lessons-card a:hover { color: var(--brand); }
.manual-lessons-card strong { font-size: 14px; }

@media (max-width: 640px) {
  .learn-step { grid-template-columns: 34px 1fr; gap: 10px; }
  .learn-step-num { width: 34px; height: 34px; font-size: 14px; }
  .learn-step:not(:last-child)::after { left: 16px; top: 38px; }
  .learn-step-actions > * { flex: 1 1 100%; }
}

/* Checkpoints and try-first examples inside a manual. */
.manual-checkpoint { margin: 26px 0; padding: 16px 20px; border-radius: 14px; border: 1px dashed color-mix(in srgb, var(--code, var(--brand)) 45%, var(--border)); background: var(--bg-alt); }
.manual-checkpoint > p { margin: 0 0 8px; }
.manual-checkpoint details summary { cursor: pointer; font-weight: 650; color: var(--code, var(--brand)); }
.manual-checkpoint details p { margin: 8px 0 0; }
.manual-tryfirst { margin: 0 0 28px; }
.manual-tryfirst > p { margin: 0 0 6px; }
.manual-examples { display: grid; gap: 16px; margin-top: 12px; }
.manual-article .lesson-figure, .manual-article .optional-lab { margin: 26px 0; }

/* Applied Practice Combo Bundle Styling */
.applied-bundle-pill-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  padding: 8px 12px;
  background: color-mix(in srgb, var(--card) 85%, var(--brand-soft));
  border: 1px solid var(--border);
  border-radius: 12px;
}
.promo-badge {
  background: linear-gradient(135deg, #2a9d8f 0%, #2a9d8f 100%) !important;
  color: #ffffff !important;
  font-weight: 700 !important;
  font-size: 12px !important;
  padding: 4px 10px !important;
  border-radius: 999px !important;
  box-shadow: 0 2px 6px rgba(16, 185, 129, 0.25);
}
.bundle-promo-text {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--fg);
}
.promo-tag {
  background: rgba(16, 185, 129, 0.12) !important;
  color: #2a9d8f !important;
  border: 1px solid rgba(16, 185, 129, 0.3) !important;
  font-weight: 650 !important;
  font-size: 11.5px !important;
  border-radius: 6px !important;
  padding: 2px 8px !important;
}
:root[data-theme="dark"] .promo-tag {
  background: rgba(16, 185, 129, 0.2) !important;
  color: #34d399 !important;
  border-color: rgba(16, 185, 129, 0.4) !important;
}
.promo-mini-tag {
  background: rgba(16, 185, 129, 0.15) !important;
  color: #264653 !important;
  font-size: 11px !important;
  font-weight: 700 !important;
  padding: 1px 6px !important;
  border-radius: 4px !important;
}
:root[data-theme="dark"] .promo-mini-tag {
  background: rgba(16, 185, 129, 0.25) !important;
  color: #6ee7b7 !important;
}
.strikethrough {
  text-decoration: line-through;
  opacity: 0.55;
  margin-left: 6px;
  font-size: 13px;
}
.summary-line.discount-line {
  color: #16a34a !important;
  font-weight: 600;
}
:root[data-theme="dark"] .summary-line.discount-line {
  color: #4ade80 !important;
}
.discount-amount {
  color: #16a34a !important;
  font-weight: 700;
}
:root[data-theme="dark"] .discount-amount {
  color: #4ade80 !important;
}
.upsell-box {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 12px;
  background: #D6F0EE;
  border: 1px solid #96cbc7;
  font-size: 13px;
  line-height: 1.5;
  color: #264653;
}
:root[data-theme="dark"] .upsell-box {
  background: rgba(42, 157, 143, 0.2);
  border-color: #2A9D8F;
  color: #D6F0EE;
}
.upsell-box.success {
  background: #D6F0EE;
  border-color: #2A9D8F;
  color: #264653;
}
:root[data-theme="dark"] .upsell-box.success {
  background: rgba(42, 157, 143, 0.22);
  border-color: #2A9D8F;
  color: #D6F0EE;
}

/* Question Card Header & Top-Right Difficulty Badge */
.q-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.q-topic-title {
  font-size: 15px;
  font-weight: 650;
  color: var(--fg);
  letter-spacing: -0.01em;
}
.q-difficulty-badge {
  margin-left: auto;
  font-weight: 700 !important;
  font-size: 11.5px !important;
  letter-spacing: 0.02em;
  padding: 3px 10px !important;
  border-radius: 999px !important;
  border: 1px solid var(--border) !important;
  text-transform: capitalize;
}
.q-difficulty-badge.diff-core, .q-difficulty-badge.diff-easy, .q-difficulty-badge.diff-lesson-drill {
  background: #D6F0EE !important;
  color: #264653 !important;
  border-color: #96cbc7 !important;
}
:root[data-theme="dark"] .q-difficulty-badge.diff-core,
:root[data-theme="dark"] .q-difficulty-badge.diff-easy,
:root[data-theme="dark"] .q-difficulty-badge.diff-lesson-drill {
  background: #203a45 !important;
  color: #D6F0EE !important;
  border-color: #2d505c !important;
}
.q-difficulty-badge.diff-standard, .q-difficulty-badge.diff-medium, .q-difficulty-badge.diff-application {
  background: rgba(42, 157, 143, 0.15) !important;
  color: #2A9D8F !important;
  border-color: #2A9D8F !important;
}
:root[data-theme="dark"] .q-difficulty-badge.diff-standard,
:root[data-theme="dark"] .q-difficulty-badge.diff-medium,
:root[data-theme="dark"] .q-difficulty-badge.diff-application {
  background: rgba(42, 157, 143, 0.25) !important;
  color: #5ec7bb !important;
  border-color: #2A9D8F !important;
}
.q-difficulty-badge.diff-harder, .q-difficulty-badge.diff-hard {
  background: rgba(231, 111, 81, 0.15) !important;
  color: #E76F51 !important;
  border-color: #E76F51 !important;
}
:root[data-theme="dark"] .q-difficulty-badge.diff-harder,
:root[data-theme="dark"] .q-difficulty-badge.diff-hard {
  background: rgba(231, 111, 81, 0.25) !important;
  color: #f08c75 !important;
  border-color: #E76F51 !important;
}
.q-difficulty-badge.diff-concept, .q-difficulty-badge.diff-conceptual {
  background: rgba(38, 70, 83, 0.12) !important;
  color: #264653 !important;
  border-color: #264653 !important;
}
:root[data-theme="dark"] .q-difficulty-badge.diff-concept,
:root[data-theme="dark"] .q-difficulty-badge.diff-conceptual {
  background: rgba(214, 240, 238, 0.15) !important;
  color: #D6F0EE !important;
  border-color: #96cbc7 !important;
}

/* Course Highlights & Rigor */
.course-highlights-list {
  list-style: none;
  margin: 14px 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.course-highlights-list li {
  position: relative;
  padding-left: 20px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--muted);
}
.course-highlights-list li::before {
  content: "✦";
  position: absolute;
  left: 2px;
  color: var(--code, var(--brand));
  font-size: 11px;
}

/* Track Sections in Learn and Practice */
.track-section {
  margin-top: 36px;
  margin-bottom: 24px;
}
.track-header {
  margin-bottom: 16px;
}
.track-title {
  margin: 0 0 4px;
  font-size: 22px;
  font-weight: 750;
  color: var(--fg);
  letter-spacing: -0.02em;
}
.track-subtitle {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}
.enrolled-badge {
  background: rgba(16, 185, 129, 0.15) !important;
  color: #2a9d8f !important;
  border: 1px solid rgba(16, 185, 129, 0.35) !important;
  font-weight: 700 !important;
  font-size: 11px !important;
  border-radius: 999px !important;
  padding: 2px 9px !important;
  margin-left: auto;
}
:root[data-theme="dark"] .enrolled-badge {
  background: rgba(16, 185, 129, 0.25) !important;
  color: #34d399 !important;
  border-color: rgba(16, 185, 129, 0.4) !important;
}

/* 1-Row responsive option layout for short answers */
.q-options.is-inline,
.example-options.is-inline,
.manual-choices.is-inline {
  display: grid !important;
  grid-template-columns: repeat(5, minmax(0, 1fr)) !important;
  gap: 10px !important;
}
.q-options.is-inline .q-option,
.example-options.is-inline .example-option,
.manual-choices.is-inline li {
  width: 100% !important;
  min-height: 46px !important;
  justify-content: flex-start !important;
  padding: 8px 12px !important;
}
@media (max-width: 768px) {
  .q-options.is-inline,
  .example-options.is-inline,
  .manual-choices.is-inline {
    grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)) !important;
  }
}

/* Modern bright, justified Actuarial Curriculum header card */
.courses-hub .page-head,
.view > section > .page-head:first-child {
  background: linear-gradient(135deg, #ffffff 0%, #D6F0EE 100%) !important;
  border: 1px solid #c8e3e1 !important;
  box-shadow: 0 4px 20px -2px rgba(38, 70, 83, 0.05), 0 1px 3px rgba(38, 70, 83, 0.03) !important;
  border-radius: 20px !important;
}
.courses-hub .page-head p,
.page-head p {
  text-align: left;
  color: var(--muted);
  line-height: 1.65;
  font-size: 16px;
}
:root[data-theme="dark"] .courses-hub .page-head,
:root[data-theme="dark"] .view > section > .page-head:first-child {
  background: linear-gradient(135deg, #264653 0%, #1c323c 100%) !important;
  border-color: #2d505c !important;
}
:root[data-theme="dark"] .courses-hub .page-head p,
:root[data-theme="dark"] .page-head p {
  color: #94a3b8;
}

/* Exam Card Modern Layout */
.exam-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  margin-bottom: 8px;
}
.exam-card-badges {
  display: flex;
  align-items: center;
  gap: 8px;
}
.exam-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  color: var(--muted);
  font-size: 13.5px;
  margin: 8px 0 12px;
}
.exam-card-meta strong {
  color: var(--fg);
  font-weight: 700;
}

/* History Banner in Practice Review Mode */
.history-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 10px;
  margin-bottom: 16px;
  font-size: 13.5px;
  font-weight: 500;
}
.history-banner.is-correct {
  background: rgba(42, 157, 143, 0.12);
  border: 1px solid #2A9D8F;
  color: #2A9D8F;
}
:root[data-theme="dark"] .history-banner.is-correct {
  background: rgba(42, 157, 143, 0.22);
  border-color: #2A9D8F;
  color: #5ec7bb;
}
.history-banner.is-wrong {
  background: rgba(231, 111, 81, 0.12);
  border: 1px solid #E76F51;
  color: #E76F51;
}
:root[data-theme="dark"] .history-banner.is-wrong {
  background: rgba(231, 111, 81, 0.22);
  border-color: #E76F51;
  color: #f08c75;
}
.history-banner-icon {
  font-weight: 800;
  font-size: 15px;
}

/* Compare the other options - Modern Actuarial Table */
.solution-alternatives {
  border: 1px solid var(--border) !important;
  background: var(--card) !important;
  border-radius: 14px !important;
  padding: 16px 20px !important;
  margin-top: 20px !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04) !important;
}
.solution-alternatives > summary {
  font-weight: 700 !important;
  font-size: 15px !important;
  color: var(--fg) !important;
  cursor: pointer;
  padding: 4px 0;
  user-select: none;
}
.solution-alternatives .alternatives-table {
  width: 100% !important;
  border-collapse: collapse !important;
  margin-top: 14px !important;
}
.solution-alternatives .alternatives-table th {
  padding: 10px 14px !important;
  font-size: 12px !important;
  font-weight: 750 !important;
  letter-spacing: 0.05em !important;
  text-transform: uppercase !important;
  color: var(--muted) !important;
  border-bottom: 2px solid var(--border) !important;
  text-align: left !important;
  background: transparent !important;
}
.solution-alternatives .alternatives-table td {
  padding: 12px 14px !important;
  border-bottom: 1px solid var(--border) !important;
  font-size: 14.5px !important;
  line-height: 1.55 !important;
  vertical-align: middle !important;
  text-align: left !important;
}
.solution-alternatives .alternatives-table tr:last-child td {
  border-bottom: none !important;
}
.solution-alternatives .alternatives-table tr.is-picked {
  background: rgba(239, 68, 68, 0.06) !important;
}
.solution-alternatives .col-opt {
  width: 170px !important;
  min-width: 140px !important;
  white-space: nowrap !important;
}
.solution-alternatives .alt-option-badge {
  display: inline-flex !important;
  align-items: center !important;
  gap: 8px !important;
  flex-wrap: wrap !important;
}
.solution-alternatives .alt-letter {
  display: inline-grid !important;
  place-items: center !important;
  width: 24px !important;
  height: 24px !important;
  border-radius: 6px !important;
  background: var(--bg-alt) !important;
  border: 1px solid var(--border) !important;
  font-weight: 750 !important;
  font-size: 12px !important;
  color: var(--fg) !important;
}
.solution-alternatives .alt-value {
  font-weight: 650 !important;
  color: var(--fg) !important;
  font-size: 14px !important;
}
.solution-alternatives .alt-picked-tag {
  font-size: 10.5px !important;
  padding: 2px 7px !important;
  margin-left: 4px !important;
}
.solution-alternatives .col-reason {
  color: var(--fg) !important;
}

/* Pricing Card Top Bar & Top-Right Corner Bundle Tag */
#course-overview.landing-courses {
  display: flex !important;
  flex-direction: column !important;
  gap: 36px !important;
}

.price-card-top {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 10px !important;
  width: 100% !important;
  margin-bottom: 12px !important;
}
.price-card-badges {
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
}
.bundle-corner-tag {
  margin-left: auto !important;
  font-weight: 700 !important;
  font-size: 11.5px !important;
  flex-shrink: 0 !important;
}

/* Fluid Readable Widths across Web Sections (Eliminate abrupt artificial wrapping) */
.lede,
.section-head,
.page-head p,
.lesson-head h1,
.curriculum-hero-banner p,
.manual-group-head p,
.manual-hero h1,
.manual-hero-sub,
.course-overview-text,
.detail-overview {
  max-width: 100% !important;
}

/* Typography & Selective Justification */
.page-head p,
.section-head p,
.course-overview-text,
.detail-overview,
.manual-para,
.curriculum-hero-banner p,
.solution-note,
.solution-steps li {
  text-align: left !important;
  word-break: break-word !important;
  line-height: 1.65 !important;
}

/* Strictly exclude short labels, headings, tables, buttons, and choices from justification */
h1, h2, h3, h4, h5, h6,
.q-meta, .q-topic-title, .course-code, .badge, .chip, .button,
.metric-pill, .q-options, .example-options, .manual-choices,
th, td, dt, dd, .manual-card-label, .manual-callout-title,
.price, .catalog-code, .track-title, .track-subtitle,
.crumbs, .faq summary, .set-progress, .course-alignment {
  text-align: left !important;
  text-align-last: left !important;
}




/* Vietcombank & VietQR Payment Box */
.payment-transfer-card {
  padding: 32px !important;
  border-radius: 20px !important;
  background: var(--card) !important;
  border: 1px solid var(--border) !important;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05) !important;
}
.payment-header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 12px;
}
.payment-flow-badge {
  font-weight: 600;
  font-size: 13px;
}
.live-poll-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  background: #d6f0ee;
  color: #264653;
  border: 1px solid #96cbc7;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.live-pulse-dot {
  width: 8px;
  height: 8px;
  background: #2a9d8f;
  border-radius: 50%;
  animation: pulseGlow 1.8s infinite ease-in-out;
}
@keyframes pulseGlow {
  0% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.payment-transfer-header {
  margin-bottom: 24px;
}
.payment-transfer-header h2 {
  margin: 0 0 6px 0;
  font-size: 24px;
  font-weight: 800;
  color: var(--fg);
}
.payment-transfer-body {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}
@media (max-width: 840px) {
  .payment-transfer-body {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

.qr-card-frame {
  background: #ffffff !important;
  color: #264653 !important;
  border: 1.5px solid #c8e3e1;
  border-radius: 18px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  box-shadow: 0 10px 25px -5px rgba(38, 70, 83, 0.08);
  position: relative;
  overflow: hidden;
}
.qr-bank-brand {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1.5px solid #f1f5f9;
  padding-bottom: 10px;
  margin-bottom: 4px;
}
.qr-vcb-title {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: #2A9D8F !important;
}
.qr-napas-title {
  font-size: 11px;
  font-weight: 700;
  color: #64748b;
  text-transform: uppercase;
}
.qr-img-box {
  width: 100%;
  max-width: 230px;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fafafa;
  border-radius: 12px;
  padding: 6px;
  border: 1px solid #c8e3e1;
}
.bank-qr-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  border-radius: 8px;
  image-rendering: -webkit-optimize-contrast;
}
.qr-scan-guide {
  font-size: 12px;
  font-weight: 600;
  color: #475569;
  background: #f7fbfb;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid #c8e3e1;
}
.qr-download-link {
  font-size: 12px;
  font-weight: 600;
  color: #2A9D8F;
  text-decoration: none;
  transition: all 0.15s;
}
.qr-download-link:hover {
  text-decoration: underline;
  color: #21867a;
}

.bank-data-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.bank-data-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--card-alt, #f7fbfb);
  border: 1px solid var(--border);
  gap: 16px;
}
.bank-data-label {
  font-size: 13px;
  color: var(--muted);
  font-weight: 500;
  white-space: nowrap;
  min-width: 140px;
}
.bank-data-val {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
  text-align: right;
}
.copy-val-row {
  justify-content: flex-end;
}
.bank-num-code {
  font-size: 17px !important;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #1e1b4b !important;
  background: #e0e7ff !important;
  padding: 4px 10px !important;
  border-radius: 8px !important;
  border: 1px solid #c7d2fe;
}
.order-code-badge {
  font-size: 17px !important;
  font-weight: 700;
  color: #b45309 !important;
  background: #fef3c7 !important;
  padding: 4px 12px !important;
  border-radius: 8px !important;
  border: 1px dashed #f59e0b;
  letter-spacing: 0.05em;
}
.highlight-amount-row {
  background: #D6F0EE !important;
  border-color: #96cbc7 !important;
}
.highlight-memo-row {
  background: rgba(231, 111, 81, 0.10) !important;
  border-color: rgba(231, 111, 81, 0.3) !important;
}
.amount-pill {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}
.amount-highlight {
  font-size: 19px;
  font-weight: 800;
  color: #264653 !important;
}
.amount-equiv {
  font-size: 14px;
  font-weight: 600;
  color: #2A9D8F;
}
.code-inline {
  color: #E76F51;
  background: rgba(231, 111, 81, 0.12);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid #E76F51;
  font-family: monospace;
}
.transfer-guide-callout {
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--brand) 7%, var(--card));
  border: 1px solid color-mix(in srgb, var(--brand) 25%, var(--border));
  border-left: 4px solid var(--brand);
}
.transfer-guide-callout p {
  margin: 0;
  line-height: 1.5;
}
.copy-btn.is-copied {
  background: #D6F0EE !important;
  color: #264653 !important;
  border-color: #2A9D8F !important;
}
.payment-action-card {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}
.action-button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.check-paid-btn {
  font-size: 14px !important;
  font-weight: 700 !important;
  padding: 10px 20px !important;
  background: #2A9D8F !important;
  color: #ffffff !important;
  border: none !important;
  box-shadow: 0 4px 12px rgba(42, 157, 143, 0.25) !important;
}
.check-paid-btn:hover {
  background: #21867a !important;
}
.sandbox-quick-btn {
  font-size: 13px !important;
  font-weight: 600 !important;
  padding: 10px 16px !important;
  background: #D6F0EE !important;
  color: #264653 !important;
  border: 1px dashed #2A9D8F !important;
}
.sandbox-quick-btn:hover {
  background: #c8e3e1 !important;
  color: #264653 !important;
}
.payment-disclaimer {
  margin-top: 10px;
  line-height: 1.5;
}

/* Success Celebration Screen */
.order-success-card {
  padding: 32px !important;
  border-radius: 20px !important;
  background: linear-gradient(135deg, #ffffff 0%, #D6F0EE 100%) !important;
  border: 2px solid #2A9D8F !important;
  box-shadow: 0 10px 30px rgba(42, 157, 143, 0.15) !important;
}
.success-head-row {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 20px;
}
.success-check-badge {
  width: 52px;
  height: 52px;
  min-width: 52px;
  border-radius: 50%;
  background: #2A9D8F;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 800;
  box-shadow: 0 4px 14px rgba(42, 157, 143, 0.4);
}
.success-head-row h2 {
  margin: 0 0 4px 0;
  font-size: 24px;
  font-weight: 800;
  color: #264653;
}
.invoice-alert {
  padding: 10px 16px;
  background: #D6F0EE;
  border-radius: 10px;
  border: 1px solid #96cbc7;
  font-size: 13px;
  color: #264653;
  margin-bottom: 24px;
}
.unlocked-title {
  margin: 20px 0 14px 0;
  font-size: 17px;
  font-weight: 700;
}
.purchased-courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}
.unlocked-card {
  padding: 24px !important;
  border-radius: 16px !important;
  background: #ffffff !important;
  border: 1.5px solid #c8e3e1 !important;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.unlocked-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: #2A9D8F;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.unlocked-card h3 {
  margin: 0 0 16px 0;
  font-size: 18px;
  font-weight: 700;
}
.unlocked-card .course-launch {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cancel-order-wrap {
  margin-top: 16px;
  text-align: right;
}
.text-button {
  background: none;
  border: none;
  color: #94a3b8;
  cursor: pointer;
  text-decoration: underline;
}
.text-button:hover {
  color: #ef4444;
}

.panel-head-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 20px;
}
.badge-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
}

/* Coupon / Discount Code Styles */
.coupon-section {
  margin: 18px 0;
  padding: 16px;
  background: var(--card-alt, #f7fbfb);
  border: 1px dashed var(--border);
  border-radius: 14px;
}
.coupon-label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-weight: 600;
  font-size: 13px;
}
.coupon-input-group {
  display: flex;
  gap: 10px;
}
.coupon-input {
  flex: 1;
  text-transform: uppercase;
  font-family: monospace;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 8px 12px !important;
}
.apply-coupon-btn {
  font-size: 13px !important;
  font-weight: 700 !important;
  padding: 8px 18px !important;
  min-height: auto !important;
}
.coupon-feedback-wrap {
  margin-top: 8px;
}
.coupon-applied-badge {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 14px;
  background: #d6f0ee;
  color: #264653;
  border: 1px solid #96cbc7;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  width: 100%;
}
.remove-coupon-btn {
  background: none;
  border: none;
  color: #2a9d8f;
  cursor: pointer;
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 4px;
}
.remove-coupon-btn:hover {
  background: #d1fae5;
  color: #2a9d8f;
}
.coupon-msg {
  margin: 6px 0 0 0;
}
.coupon-msg.ok {
  color: #2a9d8f;
  font-weight: 600;
}
.coupon-msg.error {
  color: #dc2626;
  font-weight: 600;
}
.quick-coupon-suggestions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.quick-label {
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
}
.quick-coupon-chip {
  background: #ffffff;
  border: 1px solid #96cbc7;
  color: #264653;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
}
.quick-coupon-chip:hover {
  background: #D6F0EE;
  border-color: #2A9D8F;
  color: #264653;
}
.coupon-line {
  color: #2A9D8F !important;
  font-weight: 600;
}
.coupon-tag-label {
  background: #D6F0EE;
  color: #264653;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px dashed #2a9d8f;
  font-size: 12px;
}

/* Admin Order Approval & User Management Enhancements */
.button-sm {
  padding: 5px 12px !important;
  font-size: 12.5px !important;
  border-radius: 6px !important;
  cursor: pointer;
}
.approve-order-btn {
  background: linear-gradient(135deg, #2a9d8f 0%, #2a9d8f 100%) !important;
  color: #ffffff !important;
  border: none !important;
  font-weight: 700 !important;
  box-shadow: 0 2px 4px rgba(5, 150, 105, 0.2);
}
.approve-order-btn:hover {
  background: #2a9d8f !important;
}
.action-btn-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.custom-ref-drawer summary {
  cursor: pointer;
  margin-top: 4px;
}
.inline-custom-ref {
  display: flex;
  gap: 4px;
  align-items: center;
  margin-top: 4px;
}
.input-sm {
  padding: 4px 8px !important;
  font-size: 12px !important;
  border-radius: 4px !important;
  max-width: 140px;
}
.select-sm {
  padding: 4px 8px !important;
  font-size: 12px !important;
  border-radius: 6px !important;
  border: 1px solid var(--border);
  background: var(--card);
}
.course-pill {
  margin-right: 4px;
  font-size: 11px;
}
.grant-form-row {
  display: flex;
  align-items: center;
  gap: 6px;
}
.grant-btn {
  background: var(--brand) !important;
  color: #fff !important;
}
.email-explainer-box {
  background: #f7fbfb;
  border: 1px solid #d6f0ee;
  border-left: 4px solid #3b82f6;
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 16px;
}

/* Freemium Course Locking & Paywall Gate Styles */
.free-badge,
.free-chapter-badge {
  background: #d6f0ee !important;
  color: #264653 !important;
  border: 1px solid #96cbc7 !important;
  font-weight: 600;
}

.lock-badge {
  background: #fffbeb !important;
  color: #92400e !important;
  border: 1px solid #fde68a !important;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.learn-step.is-locked {
  background: rgba(248, 250, 252, 0.7);
  border-color: #d6f0ee;
  opacity: 0.95;
}
.learn-step.is-locked .learn-step-num {
  background: #cbd5e1;
  color: #475569;
}
.learn-step.is-locked h3 a {
  color: var(--fg);
}

.lock-course-btn {
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%) !important;
  color: #ffffff !important;
  font-weight: 600 !important;
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.25) !important;
  transition: all 0.2s ease !important;
}
.lock-course-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35) !important;
}

.secondary-preview-btn {
  background: #ffffff !important;
  color: #264653 !important;
  border: 1.5px solid #2a9d8f !important;
  font-weight: 600 !important;
}
.secondary-preview-btn:hover {
  background: #d6f0ee !important;
}

/* Paywall Gate Hero Card inside Manual View */
.chapter-paywall-wrap {
  max-width: 860px;
  margin: 32px auto;
  padding: 0 16px;
}

.chapter-locked-card {
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: 24px;
  padding: 44px 40px;
  box-shadow: 0 12px 36px -4px rgba(0, 0, 0, 0.08);
  margin-top: 16px;
}

.lock-hero-header {
  text-align: center;
  margin-bottom: 32px;
}
.lock-icon-circle {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px auto;
  background: #fef2f2;
  border: 1.5px solid #fecaca;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.12);
}
.lock-tag {
  display: inline-block;
  padding: 4px 12px;
  background: #fef2f2;
  color: #dc2626;
  border: 1px solid #fca5a5;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}
.lock-hero-header h1 {
  font-size: 28px;
  font-weight: 800;
  color: var(--fg);
  margin: 0 0 12px 0;
  line-height: 1.3;
}
.lock-lead {
  font-size: 15px;
  color: var(--muted);
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.6;
}

.lock-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin: 32px 0;
  padding: 24px;
  background: #f7fbfb;
  border: 1px solid #d6f0ee;
  border-radius: 16px;
}
.lock-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.lock-feature-item .check-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: #2a9d8f;
  color: #ffffff;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}
.lock-feature-item strong {
  display: block;
  font-size: 14px;
  color: var(--fg);
  margin-bottom: 2px;
}
.lock-feature-item p {
  margin: 0;
  line-height: 1.4;
}

.lock-action-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding-top: 24px;
  border-top: 1.5px solid var(--border);
}
.lock-price-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2px;
}
.lock-price-val strong {
  font-size: 26px;
  font-weight: 800;
  color: var(--fg);
}
.lock-action-buttons {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.lock-checkout-btn {
  font-size: 15px !important;
  padding: 12px 24px !important;
}

/* Practice Freemium Banner */
.practice-freemium-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  background: linear-gradient(90deg, #f7fbfb 0%, #f5f3ff 100%);
  border: 1px solid #c7d2fe;
  border-radius: 12px;
  padding: 12px 18px;
  margin-bottom: 16px;
}
.practice-freemium-text {
  font-size: 14px;
  color: #264653;
  display: flex;
  align-items: center;
  gap: 8px;
}
.practice-freemium-text strong {
  color: #2A9D8F;
}

/* TPBank Brand Accent */
.qr-tpb-title,
.qr-timo-title {
  color: #5e17eb !important;
  font-weight: 800;
  letter-spacing: 0.05em;
}

/* Chapter 1 Completion Upsell Banner */
.manual-end-upsell-banner {
  margin: 40px auto 20px auto;
  max-width: 820px;
  background: linear-gradient(135deg, #ffffff 0%, #D6F0EE 100%);
  border: 1.5px solid #2A9D8F;
  border-radius: 20px;
  padding: 28px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  box-shadow: 0 10px 25px -5px rgba(42, 157, 143, 0.15);
}
.manual-end-upsell-banner .upsell-content h3 {
  margin: 0 0 6px 0;
  font-size: 18px;
  font-weight: 800;
  color: #264653;
}
.manual-end-upsell-banner .upsell-content p {
  margin: 0;
  font-size: 14px;
  color: #1e3a8a;
  max-width: 500px;
}
.manual-end-upsell-banner button {
  flex-shrink: 0;
}

/* Syllabus locked row */
.is-locked-row {
  opacity: 0.85;
}
.is-locked-row a strong {
  color: var(--muted);
}

/* KaTeX owns font metrics, fraction positioning and delimiter alignment. */
.katex { text-align: start; text-align-last: auto; word-spacing: normal; letter-spacing: normal; }
.katex-display > .katex { white-space: nowrap; text-align: center; }

/* Ensure no pseudo-element badges clutter question choices */
.q-option.is-correct::after,
.q-option.is-wrong::after,
.example-option.is-correct::after,
.example-option.is-wrong::after {
  content: none !important;
  display: none !important;
}

/* My Courses Learning Hub */
.my-courses-view {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 16px 60px;
}
.my-courses-section {
  margin-top: 36px;
}
.my-courses-section .section-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.my-courses-section .section-title-row h2 {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  color: var(--fg);
}
.my-courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.my-course-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-radius: 18px;
  padding: 24px;
  background: var(--card);
  border: 1.5px solid var(--border);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.my-course-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(36, 71, 224, 0.09);
  border-color: #93c5fd;
}
.my-course-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.my-course-title {
  margin: 0 0 10px 0;
  font-size: 19px;
  font-weight: 800;
  color: var(--fg);
  line-height: 1.35;
}
.my-course-blurb {
  font-size: 14px;
  line-height: 1.55;
  color: var(--muted);
  margin-bottom: 18px;
  flex-grow: 1;
}
.my-course-stats {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.stat-pill {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--bg-alt);
  color: var(--fg);
  border: 1px solid var(--border);
}
.my-course-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.my-course-actions .button {
  width: 100%;
  text-align: center;
  justify-content: center;
  padding: 10px 14px;
  font-weight: 700;
  font-size: 14px;
}
.my-course-actions .start-learn-btn {
  background: #2447e0 !important;
  color: #fff !important;
  box-shadow: 0 4px 12px rgba(36, 71, 224, 0.25);
}
.my-course-actions .start-learn-btn:hover {
  background: #1b38b8 !important;
}

/* Empty Courses State */
.empty-courses-card {
  text-align: center;
  padding: 48px 24px;
  border-radius: 20px;
  background: linear-gradient(135deg, #f7fbfb 0%, #f7fbfb 100%);
  border: 1.5px dashed #cbd5e1;
}
.empty-courses-card .empty-icon {
  font-size: 48px;
  margin-bottom: 14px;
}
.empty-courses-card h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--fg);
}
.empty-courses-card p {
  max-width: 520px;
  margin: 0 auto 20px auto;
  font-size: 14.5px;
  line-height: 1.6;
}

/* Trial Section */
.trial-card {
  border-style: dashed;
  background: #fafafa;
}
.trial-card:hover {
  border-style: solid;
}

/* Bottom Catalog Banner */
.my-courses-catalog-banner {
  margin-top: 50px;
  padding: 24px 28px;
  border-radius: 18px;
  background: var(--card);
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.my-courses-catalog-banner h3 {
  margin: 0 0 6px 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--fg);
}
.my-courses-catalog-banner p {
  margin: 0;
  font-size: 14px;
}

/* Learn Top & Bottom Navigation Bars */
.learn-top-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.learn-quick-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.learn-end-cta-card {
  margin-top: 40px;
  padding: 30px;
  border-radius: 20px;
  background: linear-gradient(135deg, #ffffff 0%, #D6F0EE 100%);
  border: 1.5px solid #2A9D8F;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  box-shadow: 0 8px 24px rgba(42, 157, 143, 0.12);
}
.learn-end-content h3 {
  margin: 0 0 8px 0;
  font-size: 19px;
  font-weight: 800;
  color: #264653;
}
.learn-end-content p {
  margin: 0;
  font-size: 14.5px;
  color: #264653;
  max-width: 580px;
}
.learn-end-buttons {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.manual-bottom-actions {
  margin-top: 36px;
  padding: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Unified Course Card (Merged Catalog & Pricing) */
.unified-course-card {
  display: flex !important;
  flex-direction: column !important;
  justify-content: space-between !important;
  padding: 26px !important;
  border-radius: 20px !important;
}
.course-pricing-row {
  margin: 16px 0 10px !important;
  padding: 14px 18px !important;
  background: var(--bg-alt) !important;
  border: 1px solid var(--border) !important;
  border-radius: 14px !important;
}
.course-pricing-row .price {
  font-size: 32px !important;
  line-height: 1.1 !important;
  margin: 0 !important;
}
.price-currency {
  font-size: 0.65em;
  font-weight: 700;
  color: var(--brand);
}
/* Lean homepage exam cards */
.lean-course-card h3 { margin: 10px 0 6px !important; }
.lean-focus { margin: 0 0 14px !important; color: var(--muted); font-size: 14px; line-height: 1.5; }
.lean-focus strong { color: var(--fg); }
.lean-block { margin: 0 0 14px; }
.lean-label {
  margin: 0 0 6px !important;
  font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--brand);
}
.lean-topics { margin: 0 !important; padding-left: 18px !important; font-size: 14px; line-height: 1.55; }
.lean-topics li { margin: 0 0 4px; }
.lean-course-card .course-unified-ticks { margin: 0 !important; }
.lean-actions { gap: 10px; }
.lean-course-card { display: flex !important; flex-direction: column !important; }
.lean-course-card .lean-actions { margin-top: auto !important; }
.lean-course-card > .course-card-top { flex: 1 1 auto !important; }
.lean-price-row {
  display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap;
  padding: 4px 0 6px;
}
.lean-price { font-size: 30px !important; line-height: 1 !important; margin: 0 !important; }
.course-pricing-row .price-subtext {
  margin: 4px 0 0 !important;
  font-size: 13px !important;
}
.course-unified-ticks {
  margin: 14px 0 6px !important;
  padding-left: 0 !important;
  list-style: none !important;
}
.course-unified-ticks li {
  font-size: 13.5px !important;
  padding-block: 4px !important;
  line-height: 1.45 !important;
}
.unified-card-actions {
  display: flex !important;
  flex-direction: column !important;
  gap: 8px !important;
  margin-top: 20px !important;
}
.unified-card-actions .button {
  width: 100% !important;
  text-align: center !important;
  justify-content: center !important;
}
.unified-card-actions .enroll-btn {
  background: var(--brand) !important;
  border-color: var(--brand) !important;
  color: #fff !important;
  font-size: 14px !important;
  padding: 10px 18px !important;
}
.unified-card-actions .enroll-btn:hover {
  background: var(--brand-hover) !important;
  border-color: var(--brand-hover) !important;
}
.unified-card-actions .link-subtle {
  display: block;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  margin-top: 4px;
  transition: color 0.15s;
}
.unified-card-actions .link-subtle:hover {
  color: var(--fg);
  text-decoration: underline;
}

/* ==========================================================================
   MINIMALIST SYSTEM OVERHAUL:
   1. Strict Top-Right Status Ribbon Placement (.card-top-bar & .status-ribbon)
   2. Subtle Semantic Status Badges with Geometric Indicator Dot
   3. Uniform Card Stretching & Bottom-Pinned CTAs Across All Grids
   ========================================================================== */

/* Remove loud 4px rainbow top borders from cards for a cleaner Linear/Geist frame */
.practice-course::before,
.manual-card::before,
.learn-course::before {
  display: none !important;
}

/* 1. Standardized Top Header Bar on Every Card & Row */
.card-top-bar,
.price-card-top,
.exam-card-top,
.practice-course-top,
.manual-card-top,
.my-course-card-top,
.learn-course-top,
.learn-step-top {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 12px !important;
  width: 100% !important;
  margin-bottom: 12px !important;
  flex-wrap: nowrap !important;
}

.card-top-left,
.price-card-badges,
.exam-card-badges,
.practice-course-badges,
.course-badges {
  display: inline-flex !important;
  align-items: center !important;
  gap: 8px !important;
  min-width: 0 !important;
  flex-wrap: wrap !important;
}

.card-track-label,
.step-overline {
  font-size: 12px !important;
  font-weight: 500 !important;
  color: var(--muted) !important;
  letter-spacing: 0.01em !important;
  line-height: 1.3 !important;
}

.step-overline {
  text-transform: uppercase !important;
  letter-spacing: 0.05em !important;
  font-size: 11px !important;
  font-weight: 600 !important;
}

/* 2. Pinned Top-Right Status Ribbon with Minimalist Indicator Dot */
.status-ribbon,
.enrolled-badge,
.bundle-corner-tag {
  margin-left: auto !important;
  flex-shrink: 0 !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 6px !important;
  padding: 3px 10px !important;
  border-radius: 999px !important;
  font-size: 11.5px !important;
  font-weight: 600 !important;
  letter-spacing: 0.01em !important;
  line-height: 1.35 !important;
  white-space: nowrap !important;
}

.status-ribbon::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

/* Unlocked / Active Access (Palette: #D6F0EE + #2A9D8F) */
.badge.good,
.status-ribbon.good,
.enrolled-badge {
  background: #D6F0EE !important;
  color: #264653 !important;
  border: 1px solid #2A9D8F !important;
}
.badge.good::before,
.status-ribbon.good::before,
.enrolled-badge::before {
  background: #2A9D8F !important;
}
:root[data-theme="dark"] .badge.good,
:root[data-theme="dark"] .status-ribbon.good,
:root[data-theme="dark"] .enrolled-badge {
  background: rgba(42, 157, 143, 0.22) !important;
  color: #D6F0EE !important;
  border-color: #2A9D8F !important;
}

/* Free Preview (Palette: #F7FBFB + #2A9D8F) */
.free-badge,
.free-chapter-badge,
.badge.info {
  background: #F7FBFB !important;
  color: #264653 !important;
  border: 1px solid #96cbc7 !important;
}
.free-badge::before,
.free-chapter-badge::before,
.badge.info::before {
  background: #2A9D8F !important;
}
:root[data-theme="dark"] .free-badge,
:root[data-theme="dark"] .free-chapter-badge,
:root[data-theme="dark"] .badge.info {
  background: rgba(42, 157, 143, 0.15) !important;
  color: #D6F0EE !important;
  border-color: #2A9D8F !important;
}

/* Locked (Palette: clean muted slate/teal) */
.lock-badge,
.badge.warn {
  background: #F7FBFB !important;
  color: #4a6b6c !important;
  border: 1px solid #c8e3e1 !important;
}
.lock-badge::before,
.badge.warn::before {
  background: #81a49f !important;
}
:root[data-theme="dark"] .lock-badge,
:root[data-theme="dark"] .badge.warn {
  background: #203a45 !important;
  color: #8bb5b3 !important;
  border-color: #2d505c !important;
}

/* Bundle Eligible (Palette Accent: #E76F51) */
.promo-tag {
  background: rgba(231, 111, 81, 0.12) !important;
  color: #E76F51 !important;
  border: 1px solid #E76F51 !important;
}
.promo-tag::before {
  background: #E76F51 !important;
}

/* 3. Strict Card Height & Bottom-Aligned CTAs Across All Grids */
.landing-courses-grid,
.my-courses-grid,
.course-hub-grid,
.learn-grid,
.practice-courses,
.exam-course-grid,
.manual-grid,
.launchpad-grid,
.purchased-courses-grid {
  align-items: stretch !important;
}

.landing-course,
.unified-course-card,
.my-course-card,
.course-hub-card,
.learn-course,
.practice-course,
.exam-course-card,
.manual-card,
.launchpad-card,
.unlocked-card {
  display: flex !important;
  flex-direction: column !important;
  justify-content: flex-start !important;
  height: 100% !important;
}

.practice-course-blurb {
  margin: 4px 0 12px !important;
  line-height: 1.5 !important;
}

.practice-course-stats {
  margin-top: auto !important;
  padding-top: 8px !important;
}

.practice-course > .button {
  margin-top: 14px !important;
  width: 100% !important;
  justify-content: center !important;
}

.exam-card-footer {
  margin-top: auto !important;
  padding-top: 14px !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 8px !important;
  width: 100% !important;
}

.exam-card-footer .button {
  margin-top: 0 !important;
  width: 100% !important;
  justify-content: center !important;
}

.launchpad-card {
  padding: 24px !important;
  border-radius: 16px !important;
}

.launchpad-card p {
  flex: 1 !important;
  margin-bottom: 20px !important;
}

.launchpad-card > .button,
.launchpad-card > a.button {
  margin-top: auto !important;
  width: 100% !important;
  text-align: center !important;
  justify-content: center !important;
}

.my-course-actions {
  margin-top: auto !important;
  padding-top: 8px !important;
}

.my-course-actions .start-learn-btn,
.lock-course-btn {
  background: var(--brand) !important;
  border: 1px solid var(--brand) !important;
  color: #ffffff !important;
  box-shadow: 0 1px 2px rgba(42, 157, 143, 0.15) !important;
}
.my-course-actions .start-learn-btn:hover,
.lock-course-btn:hover {
  background: var(--brand-hover) !important;
  border-color: var(--brand-hover) !important;
}

.secondary-preview-btn {
  background: var(--card) !important;
  color: var(--fg) !important;
  border: 1px solid var(--border-strong) !important;
  font-weight: 600 !important;
}
.secondary-preview-btn:hover {
  background: var(--bg-alt) !important;
  border-color: var(--brand) !important;
  color: var(--brand) !important;
}

/* Module row & Syllabus Table Right-Aligned Status Ribbon */
.module-row {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 16px !important;
}
.module-info {
  min-width: 0;
  flex: 1;
}
.col-status-right {
  text-align: right !important;
  white-space: nowrap !important;
}

/* Clean Paywall Gate Icon Circle */
.lock-icon-circle {
  width: 52px;
  height: 52px;
  background: #D6F0EE;
  border: 1px solid #96cbc7;
  color: #264653;
  box-shadow: none;
}
.lock-tag {
  background: #D6F0EE;
  color: #264653;
  border-color: #96cbc7;
}

/* Subtle Banners (Learn End, Manual Upsell, Freemium Practice) */
.practice-freemium-banner,
.learn-end-cta-card,
.manual-end-upsell-banner {
  background: #D6F0EE !important;
  border: 1px solid #2A9D8F !important;
  box-shadow: var(--shadow-sm) !important;
}
.practice-freemium-text,
.practice-freemium-text strong,
.learn-end-content h3,
.learn-end-content p,
.manual-end-upsell-banner .upsell-content h3,
.manual-end-upsell-banner .upsell-content p {
  color: var(--fg) !important;
}

/* Question Options & Worked Solution Design System (#F7FBFB, #D6F0EE, #2A9D8F, #E76F51, #264653) */
.q-option {
  background: var(--card) !important;
  border: 1px solid var(--border) !important;
  color: var(--fg) !important;
  transition: all 0.15s ease !important;
}
.q-option:hover {
  background: var(--bg-alt) !important;
  border-color: var(--brand) !important;
}
.q-letter {
  background: var(--bg-alt) !important;
  color: var(--fg) !important;
}
.q-option:has(input:checked) {
  border-color: var(--brand) !important;
  background: var(--bg-alt) !important;
}
.q-option:has(input:checked) .q-letter {
  background: var(--brand) !important;
  color: #ffffff !important;
}
.q-option.is-correct, .q-option.is-correct:has(input:checked) {
  border-color: #2A9D8F !important;
  background: rgba(42, 157, 143, 0.10) !important;
  box-shadow: inset 0 0 0 1px #2A9D8F !important;
}
.q-option.is-correct .q-letter, .q-option.is-correct:has(input:checked) .q-letter {
  background: #2A9D8F !important;
  color: #ffffff !important;
}
.q-option.is-wrong, .q-option.is-wrong:has(input:checked) {
  border-color: #E76F51 !important;
  background: rgba(231, 111, 81, 0.10) !important;
  box-shadow: inset 0 0 0 1px #E76F51 !important;
}
.q-option.is-wrong .q-letter, .q-option.is-wrong:has(input:checked) .q-letter {
  background: #E76F51 !important;
  color: #ffffff !important;
}

/* Feedback & Worked Solution Explainer */
.feedback.bad {
  background: rgba(231, 111, 81, 0.08) !important;
  border: 1px solid rgba(231, 111, 81, 0.25) !important;
  border-radius: 16px !important;
  padding: 20px 24px !important;
}
.feedback.bad > strong {
  color: #E76F51 !important;
  font-size: 16.5px !important;
  font-weight: 750 !important;
}
.feedback.ok {
  background: #D6F0EE !important;
  border: 1px solid #2A9D8F !important;
  border-radius: 16px !important;
  padding: 20px 24px !important;
}
.feedback.ok > strong {
  color: #2A9D8F !important;
  font-size: 16.5px !important;
  font-weight: 750 !important;
}
.solution-diagnosis {
  background: #ffffff !important;
  border: 1px solid rgba(231, 111, 81, 0.25) !important;
  border-left: 4px solid #E76F51 !important;
  border-radius: 12px !important;
  padding: 14px 18px !important;
  margin: 16px 0 !important;
}
.solution-diagnosis strong {
  color: #264653 !important;
  font-size: 14px !important;
  font-weight: 750 !important;
  display: block !important;
  margin-bottom: 6px !important;
}
.solution-diagnosis p {
  color: #264653 !important;
  margin: 0 !important;
  line-height: 1.6 !important;
}
.solution-section {
  background: #ffffff !important;
  border: 1px solid var(--border) !important;
  border-radius: 14px !important;
  padding: 18px 22px !important;
  margin: 16px 0 !important;
  box-shadow: var(--shadow-sm) !important;
}
.solution-section h4 {
  color: #264653 !important;
  font-size: 15px !important;
  font-weight: 750 !important;
  margin: 0 0 12px 0 !important;
  letter-spacing: -0.01em !important;
}
.solution-steps > li {
  gap: 12px !important;
  line-height: 1.8 !important;
  color: #264653 !important;
}
.solution-step-number {
  width: 24px !important;
  height: 24px !important;
  border-radius: 50% !important;
  background: #D6F0EE !important;
  color: #264653 !important;
  font-size: 11.5px !important;
  font-weight: 750 !important;
}
.solution-check {
  border-left: 4px solid #2A9D8F !important;
  background: #ffffff !important;
  border-color: var(--border) !important;
}

:root[data-theme="dark"] .feedback.bad {
  background: rgba(231, 111, 81, 0.15) !important;
  border-color: rgba(231, 111, 81, 0.4) !important;
}
:root[data-theme="dark"] .feedback.ok {
  background: rgba(42, 157, 143, 0.15) !important;
  border-color: rgba(42, 157, 143, 0.4) !important;
}
:root[data-theme="dark"] .solution-diagnosis {
  background: #1c323c !important;
  color: #F7FBFB !important;
  border-color: rgba(231, 111, 81, 0.4) !important;
}
:root[data-theme="dark"] .solution-diagnosis strong,
:root[data-theme="dark"] .solution-diagnosis p {
  color: #F7FBFB !important;
}
:root[data-theme="dark"] .solution-section {
  background: #1c323c !important;
  color: #F7FBFB !important;
  border-color: #2d505c !important;
}
:root[data-theme="dark"] .solution-section h4 {
  color: #F7FBFB !important;
}
:root[data-theme="dark"] .solution-step-number {
  background: #2A9D8F !important;
  color: #F7FBFB !important;
}

/* Display Math Mobile Horizontal Scrolling (P1-MTH-01 / P2-DES-05) */
.katex-display-wrapper {
  display: block !important;
  width: 100% !important;
  max-width: 100% !important;
  overflow-x: auto !important;
  -webkit-overflow-scrolling: touch;
  margin: 0.85rem 0 !important;
  text-align: center;
}
.katex-inline-wrapper {
  display: inline;
}

/* Elevate Mobile Checkout Order Summary Above Form (<980px) (P2-DES-04) */
@media (max-width: 980px) {
  .checkout-layout {
    display: flex !important;
    flex-direction: column !important;
  }
  .checkout-layout .checkout-summary {
    order: -1 !important;
    margin-bottom: 24px !important;
  }
}

/* Interactive Theme Toggle Button (P2-UIX-01) */
.theme-toggle {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 44px !important;
  height: 44px !important;
  min-width: 44px !important;
  min-height: 44px !important;
  padding: 0 !important;
  border: 1px solid var(--border) !important;
  background: transparent !important;
  color: var(--fg) !important;
  border-radius: 10px !important;
  cursor: pointer !important;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease !important;
}
.theme-toggle:hover {
  background: var(--bg-alt) !important;
  color: var(--brand) !important;
  border-color: var(--brand) !important;
}
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none !important; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block !important; }
:root:not([data-theme="dark"]) .theme-toggle .icon-moon { display: block !important; }
:root:not([data-theme="dark"]) .theme-toggle .icon-sun { display: none !important; }

/* Exam Mistake Filter Pills (P2-EXM-02) */
.exam-filter-pills {
  display: flex !important;
  gap: 10px !important;
  margin-bottom: 20px !important;
  flex-wrap: wrap !important;
}
.filter-pill {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 8px 16px !important;
  border-radius: 999px !important;
  font-size: 13.5px !important;
  font-weight: 600 !important;
  border: 1px solid var(--border) !important;
  background: var(--card) !important;
  color: var(--fg) !important;
  cursor: pointer !important;
  min-height: 40px !important;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease !important;
}
.filter-pill:hover {
  background: var(--bg-alt) !important;
  border-color: var(--brand) !important;
}
.filter-pill.is-active {
  background: var(--brand) !important;
  color: #ffffff !important;
  border-color: var(--brand) !important;
  box-shadow: 0 2px 8px rgba(42, 157, 143, 0.25) !important;
}
.filter-pill.is-mistakes.is-active {
  background: var(--err, #E76F51) !important;
  color: #ffffff !important;
  border-color: var(--err, #E76F51) !important;
  box-shadow: 0 2px 8px rgba(231, 111, 81, 0.25) !important;
}





/* ---------- Admin: grouped sidebar and users page ---------- */
.tab-group { display: grid; gap: 2px; }
.tab-group + .tab-group { margin-top: 14px; }
.tab-group-label { padding: 0 12px 4px; color: var(--faint, var(--muted)); font-size: 11.5px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.admin-main { min-width: 0; }
.toolbar-end { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.users-toolbar { align-items: center; margin-top: 0; }
.users-toolbar input, .users-toolbar select { min-height: 40px; }
.users-toolbar input.grow { flex: 1 1 200px; min-width: 160px; }
.users-toolbar select { flex: 0 1 auto; min-width: 0; max-width: 220px; }
.users-table { width: 100%; table-layout: auto; }
.users-table th:nth-child(3), .users-table td.num { text-align: right; width: 1%; white-space: nowrap; }
.users-table th:nth-child(4), .users-table td:nth-child(4) { width: 1%; white-space: nowrap; }
.users-table td { vertical-align: middle; }
.users-table th:nth-child(2) { min-width: 150px; }
.user-cell { display: grid; grid-template-columns: auto 1fr; align-items: center; column-gap: 8px; row-gap: 2px; }
.user-cell > strong { overflow-wrap: anywhere; }
.user-cell > .badge { justify-self: start; }
.user-cell > .muted { grid-column: 1 / -1; overflow-wrap: anywhere; }
.chip-row { display: flex; flex-wrap: wrap; gap: 4px; }
.course-chip { display: inline-flex; align-items: center; min-height: 24px; padding: 0 8px; border-radius: 999px; background: var(--brand-soft); color: var(--brand); font: 700 12px/1 var(--mono); }
.row-actions { width: 1%; text-align: right; white-space: nowrap; }
.button-sm { min-height: 34px !important; padding: 4px 12px !important; font-size: 13.5px !important; }
.grant-detail > td { background: var(--bg-alt); }
.grant-form { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 4px 0; }
.grant-form select { width: auto; min-width: 0; max-width: 280px; min-height: 38px; }
.grant-form .msg { margin: 0; padding: 6px 10px; }
.empty-cell { padding: 28px 12px; color: var(--muted); text-align: center; }
.table-foot { margin: 12px 0 0; }
.add-user-form { margin: 14px 0 18px; padding: 18px 20px; background: var(--bg-alt); border: 1px solid var(--border-strong); border-radius: var(--radius); }
.add-user-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 6px 16px; margin-bottom: 14px; }
.add-user-head strong { font-size: 15.5px; color: var(--fg); }
.add-user-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px 16px; }
.add-user-grid label { margin: 0; }
.pw-inline-group { display: flex; gap: 8px; align-items: center; }
.pw-inline-group input { flex: 1 1 auto; min-width: 0; }
.pw-inline-group button { flex: 0 0 auto; min-height: 44px !important; }
.add-user-courses { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--border); }
.add-user-courses-label { display: block; font-size: 13.5px; font-weight: 550; margin-bottom: 8px; color: var(--fg); }
.course-check-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.course-check-pill { display: inline-flex !important; align-items: center; gap: 8px; margin: 0 !important; padding: 7px 12px; background: var(--card); border: 1px solid var(--border-strong); border-radius: 999px; font-size: 13px; cursor: pointer; transition: border-color 0.12s, background 0.12s; }
.course-check-pill:hover { border-color: var(--brand); }
.course-check-pill:has(input:checked) { border-color: var(--brand); background: var(--brand-soft); color: var(--brand); font-weight: 600; }
.course-check-pill > span { display: inline !important; margin: 0 !important; font-size: 13px !important; font-weight: inherit !important; }
.add-user-actions { display: flex; align-items: center; gap: 10px; margin-top: 16px; }
.add-user-success { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 16px; margin: 12px 0; }

@media (max-width: 720px) {
  .toolbar-end { margin-left: 0; width: 100%; justify-content: space-between; }
  .users-toolbar input.grow, .users-toolbar select { width: 100%; min-width: 0; }
  .users-table thead { display: none; }
  .users-table, .users-table tbody, .users-table tr, .users-table td { display: block; width: 100%; }
  .users-table tr { padding: 12px 0; border-bottom: 1px solid var(--border); }
  .users-table td { padding: 4px 0; border: 0; text-align: left !important; white-space: normal; }
  .users-table td[data-label]:not(:first-child)::before { content: attr(data-label); display: inline-block; min-width: 92px; color: var(--muted); font-size: 12.5px; }
  .users-table td[data-label]:not(:first-child) { display: flex; align-items: center; gap: 8px; }
  .row-actions { padding-top: 8px !important; }
  .grant-form select { min-width: 0; width: 100%; }
}
@media (max-width: 980px) {
  .tabs { gap: 4px; }
  .tab-group { display: contents; }
  .tab-group-label { display: none; }
  .tab-group + .tab-group { margin-top: 0; }
}
@media (max-width: 720px) {
  .users-toolbar select { max-width: none; flex: 1 1 100%; }
}

/* Shared data-visualisation tokens: independent of course/brand colours. */
:root { --plot-1:#2563b8; --plot-2:#bd4b12; --plot-3:#087f73; --plot-4:#9335a8; --plot-5:#947000; --plot-6:#506273; }
:root[data-theme="dark"] { --plot-1:#79b7ff; --plot-2:#ffae77; --plot-3:#61d7bf; --plot-4:#e3a0f4; --plot-5:#f3d46e; --plot-6:#bccbd8; }
@media(prefers-color-scheme:dark) { :root:not([data-theme="light"]) { --plot-1:#79b7ff; --plot-2:#ffae77; --plot-3:#61d7bf; --plot-4:#e3a0f4; --plot-5:#f3d46e; --plot-6:#bccbd8; } }
.series-1,.lab-series-0 { --series:var(--plot-1); }
.series-2,.lab-series-1 { --series:var(--plot-2); }
.series-3,.lab-series-2 { --series:var(--plot-3); }
.series-4,.lab-series-3 { --series:var(--plot-4); }
.series-5,.lab-series-4 { --series:var(--plot-5); }
.series-6,.lab-series-5 { --series:var(--plot-6); }
.chart-line.series-2,.chart-line.series-5 { stroke-dasharray:8 4; }
.chart-line.series-3,.chart-line.series-6 { stroke-dasharray:2 4; }
.chart-legend .series-2::before,.chart-legend .series-5::before,.lab-key.lab-series-1::before,.lab-key.lab-series-4::before { height:0; background:none; border-top:3px dashed var(--series); }
.chart-legend .series-3::before,.chart-legend .series-6::before,.lab-key.lab-series-2::before,.lab-key.lab-series-5::before { height:0; background:none; border-top:3px dotted var(--series); }
.chart-line.is-dashed { stroke-dasharray:7 6; }
.lab-baseline { --series:var(--muted); }
.lab-line.lab-baseline { stroke-dasharray:3 5; opacity:.65; }
.lab-line.lab-series-4 { stroke-dasharray:8 4; }
.lab-line.lab-series-5 { stroke-dasharray:2 4; }
.manual-layout > *, .lesson-layout > *, .manual-article, .lesson-main, .prose, .lab-plots, .lab-figure { min-width:0; }
.manual-article figure,.prose figure,.manual-flow,.manual-branches,.manual-steps { min-width:0; max-width:100%; box-sizing:border-box; margin-inline:0; }
.manual-chart,.lab-figure { overflow:hidden; }
.chart-svg,.lab-figure > svg { display:block; width:100%; max-width:100%; height:auto; overflow:hidden; }
.chart-svg text,.lab-figure svg text { font-family:var(--sans); }
.manual-timeline,.manual-diagram,.manual-table-wrap { max-width:100%; overflow-x:auto; overscroll-behavior-inline:contain; }
.manual-flow-node,.manual-branch { min-width:0; overflow-wrap:break-word; }
.manual-article .display-math,.katex-display-wrapper { min-width:0; max-width:100%; overflow-x:auto; overflow-y:hidden; padding-block: .3em; }
.katex-display-wrapper > .katex-display { margin:.35em 0; }
.katex-display-wrapper .katex { overflow-wrap:normal; word-break:normal; }
@media(max-width:600px) {
 .manual-chart,.lab-figure { padding:12px 6px; }
 .manual-flow { padding:12px; }
 .manual-timeline { padding:14px 10px; }
 .chart-legend,.lab-legend { gap:10px 16px; font-size:12px; }
 .chart-tick,.chart-label { font-size:14px; }
}

/* ---------- One reading style for every course: manuals (.manual-article) and lessons (.prose) ---------- */
:root { --read-size: 16px; --read-line: 1.72; --read-h2: 22px; --read-h3: 18px; --read-h4: 15.5px; --math-size: 1.1em; --block-radius: 14px; }
@media (max-width: 640px) { :root { --read-size: 15.5px; --read-h2: 20px; --read-h3: 17px; } }
.manual-article, .prose { font-family: var(--sans); font-size: var(--read-size); line-height: var(--read-line); }
.manual-article h2, .prose .lesson-section > h2 { font-size: var(--read-h2); line-height: 1.3; letter-spacing: -0.02em; }
.manual-article h3, .prose .lesson-section > h3 { font-size: var(--read-h3); line-height: 1.35; letter-spacing: -0.01em; }
.manual-article h4, .prose h4 { font-size: var(--read-h4); line-height: 1.4; }

/* Lists: same indent, spacing and marker colour. */
.manual-list, .prose .lesson-section > ul, .prose .lesson-section > ol, .prose .objectives ul { padding-left: 24px; }
.manual-list li, .prose .lesson-section > ul > li, .prose .lesson-section > ol > li { margin: 6px 0; padding-left: 4px; }
.prose .lesson-section > ul > li::marker, .prose .lesson-section > ol > li::marker { color: var(--code, var(--brand)); font-weight: 700; }

/* Tables: one card, one header and cell style; wide tables scroll inside the card. */
.prose .lesson-table, .manual-table-wrap { border: 1px solid var(--border); border-radius: var(--block-radius); overflow-x: auto; max-width: 100%; }
.prose .lesson-table table { width: 100%; margin: 0; border-collapse: collapse; }
.prose .lesson-table th, .prose .lesson-table td { padding: 10px 14px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; line-height: 1.5; }
.prose .lesson-table th { background: var(--bg-alt); font-size: 12.5px; letter-spacing: .02em; }
.prose .lesson-table tbody tr:last-child td { border-bottom: 0; }
.prose .lesson-table tbody tr:nth-child(even) td { background: color-mix(in srgb, var(--bg-alt) 45%, transparent); }

/* Math: KaTeX at one size everywhere, and one box for every display equation (key results included). */
.katex, .formula .katex, .manual-table td .katex, .manual-table th .katex { font-size: var(--math-size); }
.manual-article .display-math, .manual-article .display-math.is-key, .manual-callout .display-math, .prose .formula {
  margin: 18px 0; padding: 14px 20px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--block-radius); box-shadow: none;
}
.manual-article .display-math > .katex-display, .prose .formula .katex-display { margin: 0; }
@media (max-width: 640px) { .manual-article .display-math, .manual-article .display-math.is-key, .manual-callout .display-math, .prose .formula { padding: 12px 12px; } }

/* Callouts: lesson summaries, mistakes, objectives and checkpoints share the manual callout look. */
.prose .callout, .prose .objectives, .prose .lesson-checkpoint {
  --tone: var(--brand);
  padding: 16px 20px 18px; border-radius: var(--block-radius); border: 1px solid color-mix(in srgb, var(--tone) 28%, transparent);
  background: color-mix(in srgb, var(--tone) 7%, var(--card));
}
.prose .callout-warn { --tone: #E76F51; }
.prose .callout-summary { --tone: #264653; }
.prose .objectives { --tone: #2A9D8F; }
.prose .lesson-checkpoint { border-style: dashed; }
.manual-checkpoint { border-radius: var(--block-radius); }
:root[data-theme="dark"] .prose .callout-summary, :root[data-theme="dark"] .manual-callout.is-important { --tone: #8ab4c4; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .prose .callout-summary, :root:not([data-theme="light"]) .manual-callout.is-important { --tone: #8ab4c4; } }

/* Code and drawings use the one monospace stack. */
.manual-code figcaption, .manual-diagram pre, .code-inline, .coupon-input { font-family: var(--mono); }

/* Diagrams never push the column wider: flow rows wrap, nodes shrink, labels break. */
.manual-flow { max-width: 100%; overflow: hidden; }
.manual-flow-row { min-width: 0; }
.manual-flow-node { flex: 1 1 min(180px, 100%); min-width: 0; max-width: min(320px, 100%); }
.manual-branch-root { max-width: 100%; overflow-wrap: anywhere; }

/* Long inline formulas and try-first example cards stay inside the column on phones. */
.katex-inline-wrapper.is-wide { display: block; max-width: 100%; overflow-x: auto; overflow-y: hidden; padding-block: .2em; }
.manual-examples { grid-template-columns: minmax(0, 1fr); }
.manual-examples > * { min-width: 0; }
/* KaTeX keeps an invisible MathML copy positioned absolutely; anchor it to the formula so it cannot escape a scrolling table and widen the page. */
.katex { position: relative; }