/* =========================================================
   LEARN — editorial long-form
   Tone: The New Yorker / Wikipedia / scientific primer.
   Text-dense, long measure, mono annotations in the margin.
   ========================================================= */

.learn { background: #FDFCF9; }

/* ---------- nav (reused from hub pattern) ---------- */
.learn .nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 32px; gap: 24px;
  border-bottom: 1px solid var(--border); background: #fff;
  position: sticky; top: 0; z-index: 100;
}
.learn .nav__logo { border: 0; }
.learn .nav__logo img { height: 26px; display: block; }
.learn .nav__menu { display: flex; align-items: center; gap: 28px; }
.learn .nav__menu > a,
.learn .nav__item-trigger {
  font-family: var(--font-body); font-size: 14px; color: var(--ink);
  border: 0; padding: 6px 0; letter-spacing: -0.005em;
  display: inline-flex; align-items: center; gap: 6px;
}
.learn .nav__menu a.is-active { color: var(--accent-blue); }
.learn .nav__menu > a:hover,
.learn .nav__item-trigger:hover { color: var(--accent-blue); }
.learn .nav__item { position: relative; }
.learn .nav__dropdown {
  position: absolute; top: 100%; left: 0; min-width: 320px;
  background: #fff; border: 1px solid var(--border);
  box-shadow: 0 24px 60px rgba(11,29,58,0.12);
  padding: 14px 0; opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity 180ms, transform 180ms, visibility 0s 180ms; z-index: 110;
}
.learn .nav__item:hover .nav__dropdown,
.learn .nav__item:focus-within .nav__dropdown {
  opacity: 1; visibility: visible; transform: translateY(0);
  transition: opacity 180ms, transform 180ms, visibility 0s 0s;
}
.learn .nav__dropdown a {
  display: flex; flex-direction: column; padding: 10px 24px;
  font-family: var(--font-display); font-size: 17px; color: var(--ink);
  border: 0; line-height: 1.2;
}
.learn .nav__dropdown a small {
  font-family: var(--font-body); font-size: 12px; color: var(--ink-muted);
  margin-top: 3px; letter-spacing: 0.02em;
}
.learn .nav__dropdown a:hover { background: var(--surface-tint); color: var(--accent-blue); }
.learn .nav__right { display: flex; align-items: center; gap: 12px; }
.learn .nav__burger {
  display: none; background: transparent; border: 1px solid var(--border);
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink);
  padding: 9px 14px; cursor: pointer; border-radius: 2px;
}

/* mobile nav hidden by default on desktop */
.learn .nav-sheet { display: none; }
.learn .nav-backdrop { display: none; }

@media (max-width: 900px) {
  .learn .nav__menu { display: none; }
  .learn .nav__burger { display: inline-block; }
  .learn .nav-backdrop {
    display: block; position: fixed; inset: 0; background: rgba(11,29,58,0.42);
    opacity: 0; pointer-events: none; transition: opacity 260ms; z-index: 95;
  }
  .learn body.nav-open .nav-backdrop,
  body.nav-open .nav-backdrop { opacity: 1; pointer-events: auto; }

  .learn .nav-sheet {
    display: flex; flex-direction: column;
    position: fixed; top: 0; right: 0; bottom: 0; z-index: 96;
    width: min(360px, 92vw);
    background: #fff; padding: 28px 24px;
    transform: translateX(100%); transition: transform 320ms cubic-bezier(.19,1,.22,1);
    overflow-y: auto;
    box-shadow: -24px 0 60px rgba(11,29,58,0.12);
  }
  .learn .nav-sheet.is-open { transform: translateX(0); }
  .learn .nav-sheet__group { display: flex; flex-direction: column; gap: 4px; margin-bottom: 28px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
  .learn .nav-sheet__group:last-of-type { border-bottom: 0; }
  .learn .nav-sheet__group .v4-mono {
    font-family: 'JetBrains Mono', monospace; font-size: 10px;
    letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-muted);
    margin-bottom: 12px;
  }
  .learn .nav-sheet a { font-family: var(--font-display); font-size: 20px; color: var(--ink); padding: 10px 0; line-height: 1.2; display: flex; flex-direction: column; border: 0; }
  .learn .nav-sheet a small { font-size: 12.5px; color: var(--ink-muted); font-family: var(--font-body); margin-top: 3px; }
  .learn .nav-sheet__footer { margin-top: auto; display: flex; flex-direction: column; gap: 12px; padding-top: 24px; border-top: 1px solid var(--border); }
  .learn .nav-sheet__footer .btn { width: 100%; justify-content: center; }
  .learn .nav-sheet__footer .v4-lbl { font-size: 11px; color: var(--ink-muted); text-align: center; }
}

/* ---------- crumb (reuse experience crumb pattern) ---------- */
.learn-crumb {
  max-width: 1240px; margin: 0 auto; padding: 28px 32px 0;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-muted);
}
.learn-crumb a { color: var(--ink-muted); border: 0; }
.learn-crumb a:hover { color: var(--accent-blue); }
.learn-crumb__sep { margin: 0 10px; opacity: 0.5; }
.learn-crumb__section { color: var(--ink-muted); }
.learn-crumb__current { color: var(--ink); }

/* ============================================================
   HERO — a single long paragraph, set like an opener essay
   ============================================================ */
.learn-hero {
  padding: clamp(60px, 8vw, 120px) 0 clamp(80px, 9vw, 128px);
  border-bottom: 1px solid var(--border);
}
.learn-hero__inner {
  max-width: 1240px; margin: 0 auto; padding: 0 32px;
  display: grid; grid-template-columns: 1fr; gap: clamp(32px, 5vw, 64px);
}
.learn-hero__tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent-blue); display: flex; align-items: center; gap: 14px;
}
.learn-hero__tag::before {
  content: ''; display: inline-block; width: 32px; height: 1px;
  background: var(--accent-blue); transform: translateY(-4px);
}
.learn-hero__h1 {
  font-family: var(--font-display); font-weight: 300;
  font-size: clamp(2.6rem, 6vw, 5.4rem); line-height: 1;
  letter-spacing: -0.025em; color: var(--ink);
  margin: 0; text-wrap: balance; max-width: 16ch;
}
.learn-hero__h1 em { color: var(--accent-blue); font-style: italic; font-weight: 400; }

.learn-hero__lede {
  font-family: var(--font-display); font-weight: 400;
  font-size: clamp(1.25rem, 1.8vw, 1.5rem); line-height: 1.45;
  color: var(--ink-soft); max-width: 58ch; margin: 0;
  font-style: italic;
}
.learn-hero__meta {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px; margin-top: 16px;
  border-top: 1px solid var(--ink); padding-top: 20px;
}
.learn-hero__meta-cell {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-muted);
}
.learn-hero__meta-cell strong {
  display: block; font-family: var(--font-body);
  font-weight: 500; font-size: 14px; letter-spacing: 0;
  text-transform: none; color: var(--ink); margin-top: 6px;
}

@media (min-width: 900px) {
  .learn-hero__inner { grid-template-columns: 1.3fr 1fr; }
  .learn-hero__h1 { grid-column: 1 / 2; }
  .learn-hero__right { grid-column: 2 / 3; display: flex; flex-direction: column; gap: 28px; }
  .learn-hero__tag { grid-column: 1 / -1; }
}
@media (max-width: 899px) {
  .learn-hero__meta { grid-template-columns: 1fr; gap: 12px; }
}

/* ============================================================
   SECTION — editorial primer (01-04)
   ============================================================ */
.learn-primer { padding: clamp(72px, 9vw, 120px) 0; }
.learn-primer__head {
  max-width: 1240px; margin: 0 auto; padding: 0 32px;
  display: grid; grid-template-columns: 1fr; gap: 24px;
  margin-bottom: clamp(48px, 6vw, 80px);
}
.learn-primer__head h2 {
  font-family: var(--font-display); font-weight: 300;
  font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.05;
  letter-spacing: -0.02em; margin: 0; max-width: 18ch;
}
.learn-primer__head h2 em { color: var(--accent-blue); font-style: italic; }
.learn-primer__head p { max-width: 52ch; color: var(--ink-soft); margin: 0; font-size: 16px; line-height: 1.65; }
@media (min-width: 900px) {
  .learn-primer__head { grid-template-columns: 1.2fr 1fr; align-items: end; gap: 48px; }
}

/* Numbered long-form article — body has sidenote gutter */
.learn-article {
  max-width: 1240px; margin: 0 auto; padding: 0 32px;
  display: grid; grid-template-columns: 1fr; gap: clamp(48px, 6vw, 72px);
}

.learn-chap {
  display: grid; grid-template-columns: 1fr;
  gap: 32px;
  padding-top: 40px; border-top: 1px solid var(--ink);
}
.learn-chap:first-child { padding-top: 0; border-top: 0; }

.learn-chap__num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent-blue);
}
.learn-chap__h3 {
  font-family: var(--font-display); font-weight: 300;
  font-size: clamp(1.8rem, 3.4vw, 2.8rem); line-height: 1.05;
  letter-spacing: -0.02em; color: var(--ink);
  margin: 12px 0 0; max-width: 16ch;
}
.learn-chap__h3 em { color: var(--accent-blue); font-style: italic; }

.learn-chap__body {
  max-width: 72ch; color: var(--ink-soft);
  font-size: 17px; line-height: 1.75;
}
.learn-chap__body > p { margin: 0 0 1.1em; }
.learn-chap__body > p:first-child { margin-top: 0; }

/* Drop cap on first paragraph of chapter body */
.learn-chap__body > p.learn-drop::first-letter {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 4.2em;
  line-height: 0.85;
  float: left;
  margin: 6px 14px 0 0;
  color: var(--ink);
}

/* Sidenote — mono, in the margin on wide screens */
.learn-chap__side {
  border-left: 1px solid var(--border);
  padding: 4px 0 4px 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px; line-height: 1.7; letter-spacing: 0.02em;
  color: var(--ink-muted);
  text-transform: none;
}
.learn-chap__side strong {
  display: block; font-family: var(--font-body); font-weight: 500;
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent-blue); margin-bottom: 8px;
}

/* Inline key terms */
.learn-chap__body dfn {
  font-style: normal;
  color: var(--ink);
  border-bottom: 1px dotted var(--ink-muted);
}
.learn-chap__body em { font-style: italic; color: var(--ink); }
.learn-chap__body strong { color: var(--ink); font-weight: 500; }

@media (min-width: 1000px) {
  .learn-chap {
    grid-template-columns: 220px 1fr 240px;
    gap: 56px;
  }
  .learn-chap__h3 {
    grid-column: 1 / 2;
    grid-row: 1 / span 2;
    position: sticky; top: 120px; align-self: start;
  }
  .learn-chap__num { grid-column: 1 / 2; }
  .learn-chap__body { grid-column: 2 / 3; }
  .learn-chap__side {
    grid-column: 3 / 4;
    grid-row: 1 / span 2;
    align-self: start;
    position: sticky; top: 120px;
  }
}
@media (min-width: 1000px) {
  /* override — put num above the h3 in the left col */
  .learn-chap { grid-template-areas: "num body side" "h3 body side"; }
  .learn-chap__num { grid-area: num; grid-column: 1 / 2; grid-row: auto; }
  .learn-chap__h3 { grid-area: h3; grid-row: auto; }
  .learn-chap__body { grid-area: body; }
  .learn-chap__side { grid-area: side; grid-row: 1 / span 2; }
}

/* ============================================================
   MECHANISM DIAGRAM
   ============================================================ */
.learn-moa {
  background: #0B1D3A; color: #fff;
  padding: clamp(80px, 10vw, 140px) 0;
}
.learn-moa__inner {
  max-width: 1240px; margin: 0 auto; padding: 0 32px;
  display: grid; grid-template-columns: 1fr; gap: clamp(32px, 5vw, 56px);
}
.learn-moa__head .mono { color: var(--accent-ice); }
.learn-moa__head h2 {
  font-family: var(--font-display); font-weight: 300;
  font-size: clamp(2.2rem, 5vw, 4rem); line-height: 1;
  letter-spacing: -0.025em; color: #fff; margin: 20px 0 0;
  max-width: 16ch;
}
.learn-moa__head h2 em { color: var(--accent-ice); font-style: italic; font-weight: 400; }
.learn-moa__head p { color: rgba(255,255,255,0.72); margin: 24px 0 0; max-width: 54ch; font-size: 16px; line-height: 1.65; }

.learn-moa__diagram {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(124,169,209,0.22);
  border-radius: 2px;
  padding: clamp(24px, 4vw, 48px);
  position: relative;
}
.learn-moa__diagram svg { width: 100%; height: auto; display: block; }

.learn-moa__legend {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px; margin-top: 28px;
  padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.15);
}
.learn-moa__legend-cell {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent-ice);
}
.learn-moa__legend-cell strong {
  display: block; font-family: var(--font-display); font-weight: 400;
  font-size: 18px; letter-spacing: -0.01em; text-transform: none;
  color: #fff; margin-top: 8px; line-height: 1.25;
}
.learn-moa__legend-cell span {
  display: block; font-family: var(--font-body); font-weight: 400;
  font-size: 13.5px; letter-spacing: 0; text-transform: none;
  color: rgba(255,255,255,0.7); margin-top: 8px; line-height: 1.55;
}
@media (max-width: 899px) {
  .learn-moa__legend { grid-template-columns: 1fr; gap: 16px; }
}

/* ============================================================
   GLOSSARY STRIP
   ============================================================ */
.learn-gloss {
  padding: clamp(72px, 9vw, 120px) 0;
  background: var(--surface-tint);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.learn-gloss__inner {
  max-width: 1240px; margin: 0 auto; padding: 0 32px;
}
.learn-gloss__head { margin-bottom: clamp(40px, 5vw, 56px); max-width: 56ch; }
.learn-gloss__head h2 {
  font-family: var(--font-display); font-weight: 300;
  font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.05;
  letter-spacing: -0.02em; margin: 16px 0 0;
}
.learn-gloss__head h2 em { color: var(--accent-blue); font-style: italic; }

.learn-gloss__grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--ink);
}
.learn-gloss__item {
  padding: 24px 28px 24px 0;
  border-bottom: 1px solid var(--border);
  display: grid; grid-template-columns: 140px 1fr; gap: 20px;
  align-items: baseline;
}
.learn-gloss__item:nth-child(odd) { padding-right: 32px; border-right: 1px solid var(--border); }
.learn-gloss__item:nth-child(even) { padding-left: 32px; }

.learn-gloss__term {
  font-family: var(--font-display); font-weight: 400;
  font-size: 20px; line-height: 1.2; color: var(--ink);
  letter-spacing: -0.01em;
}
.learn-gloss__term em { color: var(--accent-blue); font-style: italic; font-weight: 400; display: block; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; font-family: 'JetBrains Mono', monospace; margin-top: 4px; }
.learn-gloss__def {
  font-size: 14.5px; line-height: 1.6; color: var(--ink-soft);
}

@media (max-width: 899px) {
  .learn-gloss__grid { grid-template-columns: 1fr; }
  .learn-gloss__item { grid-template-columns: 1fr; gap: 8px; padding: 20px 0 !important; border-right: 0 !important; }
}

/* ============================================================
   WHY TIJUANA
   ============================================================ */
.learn-why { padding: clamp(72px, 9vw, 120px) 0; }
.learn-why__inner {
  max-width: 1240px; margin: 0 auto; padding: 0 32px;
  display: grid; grid-template-columns: 1fr; gap: clamp(40px, 5vw, 72px);
}
.learn-why__head h2 {
  font-family: var(--font-display); font-weight: 300;
  font-size: clamp(2.2rem, 5vw, 4rem); line-height: 1;
  letter-spacing: -0.025em; margin: 20px 0 0;
  max-width: 14ch;
}
.learn-why__head h2 em { color: var(--accent-blue); font-style: italic; font-weight: 400; }
.learn-why__body { max-width: 62ch; font-size: 16.5px; line-height: 1.75; color: var(--ink-soft); }
.learn-why__body p { margin: 0 0 1.1em; }
.learn-why__body p:first-child { margin-top: 0; }
.learn-why__body strong { color: var(--ink); font-weight: 500; }

.learn-why__compare {
  margin-top: clamp(40px, 5vw, 56px);
  border-top: 1px solid var(--ink);
  display: grid; grid-template-columns: 160px 1fr 1fr;
  grid-auto-rows: auto;
}
.learn-why__compare > div {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 14px; line-height: 1.55; color: var(--ink-soft);
}
.learn-why__compare > div:nth-child(3n+1) {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-muted); padding-left: 0;
}
.learn-why__compare-hd {
  font-family: 'JetBrains Mono', monospace !important;
  font-size: 11px !important; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink) !important; font-weight: 500;
}
.learn-why__compare-hd.is-us { color: var(--accent-blue) !important; }

@media (min-width: 900px) {
  .learn-why__inner { grid-template-columns: 1fr 1.3fr; gap: 80px; }
  .learn-why__head { grid-column: 1 / 2; position: sticky; top: 120px; align-self: start; }
  .learn-why__body { grid-column: 2 / 3; }
  .learn-why__compare { grid-column: 2 / 3; margin-top: 40px; }
  .learn-why__cta { grid-column: 2 / 3; }
}
@media (max-width: 760px) {
  .learn-why__compare { grid-template-columns: 1fr; }
  .learn-why__compare > div { border-bottom: 0; padding: 12px 0 4px; }
  .learn-why__compare > div:nth-child(3n+1) { padding-top: 18px; border-top: 1px solid var(--border); }
}

/* ============================================================
   RESEARCH LIST
   ============================================================ */
.learn-research {
  padding: clamp(72px, 9vw, 120px) 0;
  background: var(--surface-tint);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.learn-research__inner { max-width: 1240px; margin: 0 auto; padding: 0 32px; }
.learn-research__head { margin-bottom: clamp(40px, 5vw, 56px); max-width: 62ch; }
.learn-research__head h2 {
  font-family: var(--font-display); font-weight: 300;
  font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.05;
  letter-spacing: -0.02em; margin: 16px 0 0;
}
.learn-research__head h2 em { color: var(--accent-blue); font-style: italic; }
.learn-research__head p { color: var(--ink-soft); margin: 24px 0 0; font-size: 16px; line-height: 1.65; max-width: 58ch; }

.learn-research__list {
  border-top: 1px solid var(--ink);
}
.learn-research__item {
  display: grid; grid-template-columns: 64px 1fr 200px;
  gap: 28px; align-items: baseline;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
}
.learn-research__n {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent-blue);
}
.learn-research__body h4 {
  font-family: var(--font-display); font-weight: 400;
  font-size: 19px; line-height: 1.3; color: var(--ink);
  letter-spacing: -0.01em; margin: 0 0 6px; max-width: 48ch;
}
.learn-research__cite {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px; letter-spacing: 0.02em;
  color: var(--ink-muted); margin: 0 0 12px;
}
.learn-research__note { font-size: 14.5px; line-height: 1.6; color: var(--ink-soft); margin: 0; max-width: 60ch; }
.learn-research__tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-muted); text-align: right;
}
.learn-research__tag strong {
  display: block; color: var(--ink); font-weight: 500;
  font-family: var(--font-body);
  font-size: 13px; letter-spacing: 0; text-transform: none;
  margin-top: 4px;
}
@media (max-width: 760px) {
  .learn-research__item { grid-template-columns: 1fr; gap: 10px; padding: 24px 0; }
  .learn-research__tag { text-align: left; }
}

/* ============================================================
   RED FLAGS — the differentiator
   ============================================================ */
.learn-flags { padding: clamp(80px, 10vw, 140px) 0; }
.learn-flags__inner {
  max-width: 1240px; margin: 0 auto; padding: 0 32px;
}
.learn-flags__head {
  display: grid; grid-template-columns: 1fr; gap: 24px;
  margin-bottom: clamp(48px, 6vw, 72px); max-width: 64ch;
}
.learn-flags__head h2 {
  font-family: var(--font-display); font-weight: 300;
  font-size: clamp(2.4rem, 5.2vw, 4.2rem); line-height: 1;
  letter-spacing: -0.025em; margin: 16px 0 0;
  max-width: 14ch;
}
.learn-flags__head h2 em { color: var(--accent-blue); font-style: italic; font-weight: 400; }
.learn-flags__head p { color: var(--ink-soft); margin: 0; font-size: 17px; line-height: 1.7; max-width: 56ch; }

.learn-flags__grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--ink);
}
.learn-flag {
  padding: 32px 32px 32px 0;
  border-bottom: 1px solid var(--border);
  display: grid; grid-template-columns: 48px 1fr; gap: 24px;
  align-items: start;
}
.learn-flag:nth-child(odd) { padding-right: 32px; border-right: 1px solid var(--border); }
.learn-flag:nth-child(even) { padding-left: 32px; }

.learn-flag__icon {
  width: 44px; height: 44px;
  border: 1px solid var(--ink);
  border-radius: 50%;
  display: grid; place-items: center;
  flex-shrink: 0;
}
.learn-flag__icon svg { width: 22px; height: 22px; stroke: var(--ink); fill: none; stroke-width: 1.5; }

.learn-flag__text h4 {
  font-family: var(--font-display); font-weight: 400;
  font-size: 20px; line-height: 1.25; color: var(--ink);
  letter-spacing: -0.01em; margin: 0 0 10px;
}
.learn-flag__text p { font-size: 14.5px; line-height: 1.65; color: var(--ink-soft); margin: 0 0 14px; }
.learn-flag__text p:last-child { margin-bottom: 0; }
.learn-flag__ask {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent-blue); margin-bottom: 6px;
}
.learn-flag__ask-text {
  font-family: var(--font-display); font-style: italic; font-size: 16.5px;
  color: var(--ink); line-height: 1.4;
}

@media (max-width: 899px) {
  .learn-flags__grid { grid-template-columns: 1fr; }
  .learn-flag { grid-template-columns: 40px 1fr; gap: 18px; padding: 24px 0 !important; border-right: 0 !important; }
}

/* ============================================================
   CHECKLIST · contextual download inside red-flags section
   Mirrors the journey-guide download card (exp-guide) pattern.
   ============================================================ */
.learn-flags__download {
  margin-top: clamp(56px, 7vw, 88px);
  padding: clamp(40px, 5vw, 64px) clamp(32px, 4vw, 56px);
  background: var(--surface-tint, #F7F6F2);
  border: 1px solid rgba(11,29,58,0.12);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}
.learn-flags__download::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(11,29,58,0.05) 1px, transparent 0);
  background-size: 22px 22px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.5), transparent 70%);
  pointer-events: none;
}
.learn-flags__download-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(40px, 5vw, 64px);
  align-items: center;
}
@media (min-width: 900px) {
  .learn-flags__download-inner {
    grid-template-columns: minmax(340px, 1.1fr) 1fr;
    gap: clamp(48px, 6vw, 88px);
  }
}

/* ---------- LEFT: document plate ---------- */
.learn-flags__doc {
  position: relative;
  display: block;
  aspect-ratio: 8.5 / 11;
  width: 100%;
  max-width: 440px;
  margin: 0 auto;
  padding: 22px 24px 14px;
  background: #fff;
  border: 1px solid rgba(11,29,58,0.14);
  box-shadow:
    0 1px 0 rgba(11,29,58,0.04),
    0 18px 40px -18px rgba(11,29,58,0.28),
    0 2px 6px rgba(11,29,58,0.06);
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transform: rotate(-1.2deg);
  transition:
    transform 500ms cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 500ms cubic-bezier(0.16, 1, 0.3, 1),
    border-color 200ms ease;
}
.learn-flags__doc:hover,
.learn-flags__doc:focus-visible {
  transform: translateY(-4px) rotate(-0.4deg);
  box-shadow:
    0 1px 0 rgba(11,29,58,0.04),
    0 28px 50px -16px rgba(11,29,58,0.32),
    0 4px 10px rgba(11,29,58,0.08);
  border-color: rgba(11,29,58,0.22);
}
.learn-flags__doc:focus-visible { outline: 2px solid var(--accent-blue); outline-offset: 4px; }

.learn-flags__doc-corner {
  position: absolute; top: 0; right: 0;
  width: 44px; height: 44px;
  background: linear-gradient(225deg, #F7F6F2 0%, #F7F6F2 50%, transparent 50%);
  border-left: 1px solid rgba(11,29,58,0.14);
  border-bottom: 1px solid rgba(11,29,58,0.14);
  z-index: 3;
  pointer-events: none;
}
.learn-flags__doc-stamp {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  background: rgba(255,255,255,0.9);
  border: 1px solid rgba(11,29,58,0.14);
  border-radius: 2px;
  font-size: 9px;
  backdrop-filter: blur(2px);
  white-space: nowrap;
}
.learn-flags__doc-stamp .mono { white-space: nowrap; }
.learn-flags__doc-stamp::before {
  content: '';
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent-blue);
}

.learn-flags__doc-grid {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}
.learn-flags__doc-mark {
  position: absolute;
  bottom: -40px; right: -40px;
  width: 200px; height: 200px;
  opacity: 0.04;
  z-index: 0;
  pointer-events: none;
}
.learn-flags__doc-art {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.learn-flags__doc-eyebrow {
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 9.5px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border, rgba(11,29,58,0.14));
  white-space: nowrap;
}
.learn-flags__doc-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 24px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 6px 0 0;
  max-width: 14ch;
}
.learn-flags__doc-title em {
  color: var(--accent-blue);
  font-style: italic;
  font-weight: 400;
}
.learn-flags__doc-toc {
  list-style: none;
  margin: auto 0 0;
  padding: 10px 0 0;
  border-top: 1px solid var(--border, rgba(11,29,58,0.14));
}
.learn-flags__doc-toc li {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  gap: 10px;
  align-items: baseline;
  padding: 2px 0;
  border-bottom: 1px dashed rgba(11,29,58,0.1);
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--ink-soft);
}
.learn-flags__doc-toc li:last-child { border-bottom: 0; }
.learn-flags__doc-toc li > span:first-child {
  color: var(--accent-blue);
  font-weight: 500;
}
.learn-flags__doc-toc li > span:nth-child(2) {
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0;
  text-transform: none;
}
.learn-flags__doc-toc li > span:last-child {
  color: var(--ink-muted);
  font-variant-numeric: tabular-nums;
}
.learn-flags__doc-foot {
  margin-top: 6px;
  padding-top: 5px;
  border-top: 1px solid var(--border, rgba(11,29,58,0.14));
  display: flex;
  justify-content: flex-start;
  font-size: 8px;
  color: var(--ink-muted);
  white-space: nowrap;
  line-height: 1;
}

/* ---------- RIGHT: body ---------- */
.learn-flags__download-body { max-width: 48ch; }
.learn-flags__download-h {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 3.8vw, 2.8rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 14px 0 18px;
  max-width: 18ch;
}
.learn-flags__download-h em { color: var(--accent-blue); font-style: italic; font-weight: 400; }
.learn-flags__download-lede {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-soft);
  margin: 0 0 24px;
}
.learn-flags__download-meta {
  margin: 24px 0 0;
  padding-top: 4px;
  border-top: 1px solid var(--ink);
}
.learn-flags__download-meta > div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(11,29,58,0.12);
  align-items: baseline;
}
.learn-flags__download-meta dt {
  font-size: 10.5px;
  color: var(--ink-muted);
  margin: 0;
}
.learn-flags__download-meta dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink);
}
@media (max-width: 540px) {
  .learn-flags__download-meta > div { grid-template-columns: 1fr; gap: 4px; }
}

.learn-flags__download-actions {
  margin-top: clamp(28px, 3.5vw, 40px);
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: flex-start;
}
.learn-flags__download-cta {
  display: inline-flex;
  align-items: center;
  gap: 20px;
  padding: 18px 24px;
  background: var(--accent-blue);
  color: #fff;
  text-decoration: none;
  border-radius: 2px;
  box-shadow: 0 1px 0 rgba(11,29,58,0.08), 0 10px 24px -8px rgba(45,110,177,0.4);
  transition:
    background-color 220ms ease,
    transform 300ms cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 300ms cubic-bezier(0.16, 1, 0.3, 1);
}
.learn-flags__download-cta:hover,
.learn-flags__download-cta:focus-visible {
  background: var(--accent-blue-hover, #1A4B7A);
  transform: translateY(-3px);
  box-shadow: 0 1px 0 rgba(11,29,58,0.08), 0 20px 36px -12px rgba(45,110,177,0.55);
}
.learn-flags__download-cta:focus-visible { outline: 2px solid var(--accent-blue); outline-offset: 3px; }
.learn-flags__download-cta:active { transform: translateY(0); }

.learn-flags__download-cta-label {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: left;
}
.learn-flags__download-cta-label .mono {
  color: rgba(255,255,255,0.7);
  font-size: 10px;
}
.learn-flags__download-cta-label b {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 16px;
  letter-spacing: -0.01em;
  color: #fff;
}
.learn-flags__download-cta-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.22);
  border-radius: 50%;
  color: #fff;
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1), background-color 200ms ease;
}
.learn-flags__download-cta:hover .learn-flags__download-cta-arrow,
.learn-flags__download-cta:focus-visible .learn-flags__download-cta-arrow {
  transform: translateX(3px);
  background: rgba(255,255,255,0.22);
}
.learn-flags__download-note {
  color: var(--ink-muted);
  font-size: 10px;
  letter-spacing: 0.08em;
}

@media (prefers-reduced-motion: reduce) {
  .learn-flags__doc,
  .learn-flags__download-cta,
  .learn-flags__download-cta-arrow {
    transition: none;
  }
  .learn-flags__doc:hover,
  .learn-flags__download-cta:hover,
  .learn-flags__download-cta:focus-visible {
    transform: none;
  }
}

/* ============================================================
   FAQ (long, categorized)
   ============================================================ */
.learn-faq {
  padding: clamp(72px, 9vw, 120px) 0;
  background: var(--surface-tint);
  border-top: 1px solid var(--border);
}
.learn-faq__inner { max-width: 1240px; margin: 0 auto; padding: 0 32px; }
.learn-faq__head {
  display: grid; grid-template-columns: 1fr; gap: 24px;
  margin-bottom: clamp(40px, 5vw, 56px);
}
.learn-faq__head h2 {
  font-family: var(--font-display); font-weight: 300;
  font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.05;
  letter-spacing: -0.02em; margin: 0; max-width: 18ch;
}
.learn-faq__head h2 em { color: var(--accent-blue); font-style: italic; }
.learn-faq__head p { max-width: 52ch; color: var(--ink-soft); margin: 0; }
@media (min-width: 900px) {
  .learn-faq__head { grid-template-columns: 1.2fr 1fr; align-items: end; gap: 48px; }
}

.learn-faq__group {
  margin-top: 48px;
}
.learn-faq__group-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent-blue); margin-bottom: 4px;
  padding-bottom: 12px; border-bottom: 1px solid var(--ink);
}

.learn-faq__list details {
  border-bottom: 1px solid var(--border);
}
.learn-faq__list summary {
  list-style: none; cursor: pointer;
  display: grid; grid-template-columns: 64px 1fr 32px;
  gap: 20px; align-items: baseline;
  padding: 22px 0;
  font-family: var(--font-display); font-weight: 400;
  font-size: clamp(1.1rem, 1.6vw, 1.35rem); line-height: 1.3;
  color: var(--ink); letter-spacing: -0.005em;
}
.learn-faq__list summary::-webkit-details-marker { display: none; }
.learn-faq__n {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.14em; color: var(--accent-blue);
  text-transform: uppercase;
}
.learn-faq__ic {
  font-family: 'JetBrains Mono', monospace; font-size: 22px;
  color: var(--accent-blue); text-align: right; font-weight: 300;
  transition: transform 260ms cubic-bezier(.19,1,.22,1);
}
.learn-faq__list details[open] .learn-faq__ic { transform: rotate(45deg); }
.learn-faq__a {
  padding: 0 0 28px 84px;
  font-size: 15.5px; line-height: 1.7; color: var(--ink-soft);
  max-width: 68ch;
}
.learn-faq__a p { margin: 0 0 1em; }
.learn-faq__a p:last-child { margin-bottom: 0; }

@media (max-width: 760px) {
  .learn-faq__list summary { grid-template-columns: 1fr 24px; gap: 12px; padding: 18px 0; font-size: 1.05rem; }
  .learn-faq__n { display: none; }
  .learn-faq__a { padding: 0 0 20px 0; font-size: 14.5px; }
}

/* ============================================================
   CTA (quiet)
   ============================================================ */
.learn-cta {
  padding: clamp(80px, 10vw, 140px) 0;
  background: #0B1D3A; color: #fff;
}
.learn-cta__inner {
  max-width: 1240px; margin: 0 auto; padding: 0 32px;
  display: grid; grid-template-columns: 1fr; gap: clamp(32px, 5vw, 64px);
  align-items: end;
}
.learn-cta__text h2 {
  font-family: var(--font-display); font-weight: 300;
  font-size: clamp(2.4rem, 5.2vw, 4.4rem); line-height: 1;
  letter-spacing: -0.025em; color: #fff; margin: 20px 0 0;
  max-width: 16ch;
}
.learn-cta__text h2 em { color: var(--accent-ice); font-style: italic; font-weight: 400; }
.learn-cta__text p { color: rgba(255,255,255,0.72); margin: 24px 0 0; max-width: 48ch; font-size: 16.5px; line-height: 1.65; }
.learn-cta__actions { display: flex; flex-direction: column; gap: 16px; align-items: flex-start; }
.learn-cta__actions .btn { min-width: 220px; text-align: center; }
.learn-cta__actions .mono {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent-ice);
}
@media (min-width: 900px) {
  .learn-cta__inner { grid-template-columns: 1.4fr 1fr; gap: 72px; }
}


/* ============================================================
   FOOTER — shared pattern, namespaced to .learn for safety
   ============================================================ */
.learn .footer {
  background: #0B1D3A; color: #fff;
  padding: clamp(64px, 7vw, 96px) 32px 32px;
}
.learn .footer__grid {
  max-width: 1240px; margin: 0 auto;
  display: grid; grid-template-columns: 1.6fr repeat(4, 1fr);
  gap: clamp(32px, 4vw, 56px);
  padding-bottom: clamp(48px, 6vw, 72px);
  border-bottom: 1px solid rgba(255,255,255,0.14);
}
.learn .footer__brand img { height: 24px; display: block; filter: brightness(0) invert(1); }
.learn .footer__brand p {
  margin: 18px 0 0; max-width: 34ch;
  font-size: 13.5px; line-height: 1.65; color: rgba(255,255,255,0.65);
}
.learn .footer__col h5 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase;
  color: rgba(255,255,255,0.55); margin: 0 0 18px; font-weight: 500;
}
.learn .footer__col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.learn .footer__col a {
  color: #fff; text-decoration: none; border: 0;
  font-size: 14px; letter-spacing: -0.005em;
}
.learn .footer__col a:hover { color: var(--accent-ice); }

.learn .footer__legal {
  max-width: 1240px; margin: 0 auto; padding-top: 28px;
  display: grid; grid-template-columns: 1fr 2fr; gap: 32px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px; line-height: 1.7; letter-spacing: 0.04em;
  color: rgba(255,255,255,0.5);
}
.learn .footer__legal-right { color: rgba(255,255,255,0.65); }

@media (max-width: 960px) {
  .learn .footer__grid { grid-template-columns: 1fr 1fr; }
  .learn .footer__brand { grid-column: 1 / -1; }
  .learn .footer__legal { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .learn .footer__grid { grid-template-columns: 1fr; gap: 32px; }
}