:root {
  --fl-ground: #e6f3ef;
  --fl-panel: #fbfcf7;
  --fl-panel-2: #eef7ff;
  --fl-ink: #202733;
  --fl-muted: #65737c;
  --fl-rule: #b7cac4;
  --fl-soft-rule: #d5e2dd;
  --fl-pressure: #ff476f;
  --fl-commit: #2857d9;
  --fl-teach: #159b72;
  --fl-warning: #efc84a;
  --fl-shadow: rgba(32, 39, 51, 0.14);
  --fl-display: 'Arial Black', 'Aptos Display', 'Segoe UI Black', Impact, sans-serif;
  --fl-body: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --fl-mono: Menlo, Consolas, 'Andale Mono', monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--fl-ink);
  background: var(--fl-ground);
  font-family: var(--fl-body);
  line-height: 1.55;
}

a { color: inherit; }

.fl-home, .fl-article-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.fl-mast {
  position: relative;
  padding: 28px 0 42px;
  min-height: 620px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 360px);
  grid-template-rows: auto auto 1fr auto;
  column-gap: 44px;
  border-bottom: 2px solid var(--fl-ink);
}

.fl-session-strip {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 8px;
  border: 1px solid var(--fl-rule);
  background: var(--fl-panel);
  font-family: var(--fl-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.fl-session-strip span {
  padding: 7px 10px;
  border: 1px solid var(--fl-soft-rule);
  background: #fff;
}

.fl-session-strip span:first-child {
  background: var(--fl-ink);
  color: #fff;
  border-color: var(--fl-ink);
}

.fl-loopmark {
  grid-column: 2;
  grid-row: 2 / span 3;
  align-self: center;
  justify-self: stretch;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 42px;
  gap: 10px;
  padding: 18px;
  border: 2px solid var(--fl-ink);
  background: var(--fl-panel-2);
  box-shadow: 10px 10px 0 var(--fl-warning);
}

.fl-loopmark span {
  border: 3px solid var(--fl-ink);
  border-radius: 999px;
  background: var(--fl-panel);
}

.fl-loopmark span:nth-child(1) { grid-column: 1 / 4; }
.fl-loopmark span:nth-child(2) { grid-column: 4 / 7; border-color: var(--fl-pressure); }
.fl-loopmark span:nth-child(3) { grid-column: 2 / 6; background: var(--fl-warning); }
.fl-loopmark span:nth-child(4) { grid-column: 1 / 3; border-color: var(--fl-commit); }
.fl-loopmark span:nth-child(5) { grid-column: 3 / 7; }
.fl-loopmark span:nth-child(6) { grid-column: 1 / 7; border-color: var(--fl-teach); }

.fl-kicker, .fl-eyebrow {
  margin: 34px 0 0;
  font-family: var(--fl-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--fl-pressure);
}

.fl-mast h1 {
  grid-column: 1;
  margin: 18px 0 0;
  max-width: 760px;
  font-family: var(--fl-display);
  font-size: clamp(58px, 11vw, 150px);
  line-height: .82;
  letter-spacing: -.08em;
  text-transform: uppercase;
}

.fl-headline {
  grid-column: 1;
  margin: 22px 0 0;
  max-width: 680px;
  font-family: var(--fl-display);
  font-size: clamp(28px, 4.8vw, 70px);
  line-height: .9;
  letter-spacing: -.055em;
}

.fl-dek {
  grid-column: 1;
  max-width: 660px;
  margin: 22px 0 0;
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.32;
  color: #35414a;
}

.fl-byline {
  grid-column: 1;
  margin: 22px 0 0;
  font-family: var(--fl-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.fl-topic-rack {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
}

.fl-topic-rack a, .fl-topic-rack span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 12px;
  border: 1px solid var(--fl-ink);
  border-radius: 999px;
  background: var(--fl-panel);
  font-size: 13px;
  text-decoration: none;
}

.fl-instruments {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 18px 0 52px;
}

.fl-instruments article {
  min-height: 240px;
  padding: 18px;
  border: 2px solid var(--fl-ink);
  background: var(--fl-panel);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.fl-instruments article:nth-child(2) { transform: translateY(24px); }
.fl-instruments article:nth-child(3) { transform: translateY(48px); }

.fl-instrument-code {
  width: fit-content;
  padding: 6px 8px;
  background: var(--fl-ink);
  color: #fff;
  font-family: var(--fl-mono);
  font-size: 12px;
}

.fl-instruments h2 {
  margin: 30px 0 10px;
  font-family: var(--fl-display);
  font-size: clamp(26px, 3vw, 44px);
  line-height: .92;
  letter-spacing: -.055em;
}

.fl-instruments p { margin: 0; color: #3d4a53; }

.fl-feature {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 18px;
  align-items: stretch;
  margin: 86px 0 24px;
}

.fl-feature-slab {
  padding: clamp(24px, 5vw, 60px);
  border: 2px solid var(--fl-ink);
  background: var(--fl-panel);
  box-shadow: inset 18px 0 0 var(--fl-pressure);
}

.fl-feature-slab h2 {
  max-width: 760px;
  margin: 12px 0 18px;
  font-family: var(--fl-display);
  font-size: clamp(36px, 6vw, 82px);
  line-height: .9;
  letter-spacing: -.06em;
}

.fl-feature-slab p:last-child {
  max-width: 720px;
  margin: 0;
  font-size: 20px;
  line-height: 1.42;
}

.fl-pressure-card {
  padding: 18px;
  border: 2px dashed var(--fl-ink);
  background: var(--fl-warning);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.fl-pressure-card span {
  font-family: var(--fl-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.fl-pressure-card b {
  display: block;
  margin: 38px 0 16px;
  font-family: var(--fl-display);
  font-size: 34px;
  line-height: .92;
  letter-spacing: -.05em;
}

.fl-pressure-card p { margin: 0; }

.fl-thresholds {
  margin: 24px 0 60px;
  padding: 22px;
  border: 1px solid var(--fl-rule);
  background: #dff0ea;
}

.fl-thresholds h2 {
  margin: 0 0 16px;
  font-family: var(--fl-display);
  font-size: clamp(28px, 4vw, 58px);
  line-height: .95;
  letter-spacing: -.055em;
}

.fl-threshold-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--fl-ink);
  border: 1px solid var(--fl-ink);
}

.fl-threshold-grid p {
  margin: 0;
  padding: 18px;
  background: var(--fl-panel);
  font-size: 15px;
}

.fl-threshold-grid strong { color: var(--fl-commit); }

.fl-archive {
  margin: 0 0 80px;
  border-top: 2px solid var(--fl-ink);
  padding-top: 20px;
}

.fl-archive-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 18px;
}

.fl-archive-head .fl-eyebrow { margin: 0; }

.fl-archive h2 {
  margin: 0;
  font-family: var(--fl-display);
  font-size: clamp(34px, 5vw, 76px);
  line-height: .9;
  letter-spacing: -.06em;
}

.fl-post-stack {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.fl-receipt {
  min-height: 250px;
}

.fl-receipt-link {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  padding: 16px;
  text-decoration: none;
  border: 2px solid var(--fl-ink);
  background: var(--fl-panel);
  box-shadow: 6px 6px 0 transparent;
  transition: box-shadow .15s ease, transform .15s ease;
}

.fl-receipt-link:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--fl-pressure);
}

.fl-receipt-top, .fl-receipt-bottom {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  font-family: var(--fl-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.fl-hesitation-tick {
  width: 48px;
  height: 18px;
  border: 2px solid var(--fl-ink);
  border-radius: 999px;
  position: relative;
  background: var(--fl-warning);
}

.fl-hesitation-tick::after {
  content: '';
  position: absolute;
  right: 5px;
  top: 4px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--fl-pressure);
}

.fl-receipt h2 {
  margin: 28px 0 12px;
  font-family: var(--fl-display);
  font-size: clamp(26px, 3vw, 46px);
  line-height: .94;
  letter-spacing: -.055em;
}

.fl-receipt p {
  margin: 0 0 28px;
  color: #3b4852;
  font-size: 16px;
}

.fl-receipt-bottom {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--fl-rule);
  color: var(--fl-muted);
}

.fl-receipt-bottom span:last-child { color: var(--fl-teach); }

.fl-article-shell { padding-bottom: 90px; }

.fl-article-hero {
  padding: 28px 0 24px;
  border-bottom: 2px solid var(--fl-ink);
}

.fl-article-nav {
  margin-bottom: 14px;
  font-family: var(--fl-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.fl-article-nav a {
  text-decoration: none;
  border-bottom: 2px solid var(--fl-pressure);
}

.fl-article-hero h1 {
  max-width: 980px;
  margin: 28px 0 18px;
  font-family: var(--fl-display);
  font-size: clamp(46px, 8vw, 112px);
  line-height: .88;
  letter-spacing: -.065em;
}

.fl-article-meta {
  font-family: var(--fl-mono);
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--fl-muted);
}

.fl-article-frame {
  display: grid;
  grid-template-columns: 126px minmax(0, 720px) 240px;
  gap: 24px;
  align-items: start;
  padding-top: 26px;
}

.fl-behavior-marks {
  position: sticky;
  top: 18px;
  display: grid;
  gap: 10px;
}

.fl-behavior-marks span {
  min-height: 54px;
  display: flex;
  align-items: center;
  padding: 8px;
  border: 1px solid var(--fl-ink);
  background: var(--fl-panel);
  font-family: var(--fl-mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.fl-behavior-marks span:nth-child(2) { margin-left: 22px; background: var(--fl-warning); }
.fl-behavior-marks span:nth-child(3) { margin-left: 8px; border-color: var(--fl-commit); }
.fl-behavior-marks span:nth-child(4) { margin-left: 34px; background: #dff0ea; }

.fl-article-body {
  padding: clamp(24px, 4vw, 54px);
  border: 2px solid var(--fl-ink);
  background: var(--fl-panel);
  box-shadow: 12px 12px 0 var(--fl-soft-rule);
}

.fl-article-body > *:first-child { margin-top: 0; }
.fl-article-body > *:last-child { margin-bottom: 0; }

.fl-article-body p, .fl-article-body li {
  font-size: 19px;
  line-height: 1.7;
}

.fl-article-body h2, .fl-article-body h3 {
  margin: 42px 0 12px;
  font-family: var(--fl-display);
  line-height: .98;
  letter-spacing: -.045em;
}

.fl-article-body h2 { font-size: clamp(30px, 4vw, 54px); }
.fl-article-body h3 { font-size: clamp(24px, 3vw, 38px); }

.fl-article-body blockquote {
  margin: 34px 0;
  padding: 18px 20px;
  border-left: 10px solid var(--fl-pressure);
  background: var(--fl-panel-2);
  font-family: var(--fl-display);
  font-size: clamp(24px, 3vw, 42px);
  line-height: 1.02;
  letter-spacing: -.04em;
}

.fl-article-body code {
  font-family: var(--fl-mono);
  font-size: .9em;
  background: #e8eee9;
  padding: .1em .35em;
}

.fl-commitment-dial {
  position: sticky;
  top: 18px;
  padding: 16px;
  border: 2px solid var(--fl-ink);
  background: var(--fl-warning);
}

.fl-commitment-dial b {
  display: block;
  font-family: var(--fl-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.fl-dial {
  width: 128px;
  height: 128px;
  margin: 24px auto;
  border: 14px solid var(--fl-panel);
  border-top-color: var(--fl-pressure);
  border-right-color: var(--fl-commit);
  border-bottom-color: var(--fl-teach);
  border-radius: 50%;
  position: relative;
  background: var(--fl-panel);
}

.fl-dial span {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 48px;
  height: 4px;
  transform-origin: left center;
  transform: rotate(34deg);
  background: var(--fl-ink);
}

.fl-commitment-dial p {
  margin: 0;
  font-size: 14px;
}

@media (max-width: 920px) {
  .fl-mast, .fl-feature, .fl-article-frame { grid-template-columns: 1fr; }
  .fl-loopmark { grid-column: 1; grid-row: auto; margin-top: 28px; }
  .fl-instruments, .fl-threshold-grid, .fl-post-stack { grid-template-columns: 1fr; }
  .fl-instruments article:nth-child(2), .fl-instruments article:nth-child(3) { transform: none; }
  .fl-behavior-marks, .fl-commitment-dial { position: static; }
  .fl-behavior-marks { grid-template-columns: repeat(4, 1fr); }
  .fl-behavior-marks span { margin-left: 0 !important; }
}

@media (max-width: 560px) {
  .fl-home, .fl-article-shell { width: min(100% - 20px, 1180px); }
  .fl-mast { min-height: 0; }
  .fl-loopmark { grid-auto-rows: 30px; padding: 12px; gap: 7px; }
  .fl-archive-head { display: block; }
  .fl-behavior-marks { grid-template-columns: 1fr 1fr; }
  .fl-article-body { padding: 22px; }
  .fl-article-body p, .fl-article-body li { font-size: 17px; }
}