/* Backtest pilot UI — design system from mockup v2.5
   Built Day 8. Tokens, typography, and components derive verbatim
   from backtest_product_mockup_v2_5.html. */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,300;9..144,400;9..144,500;9..144,600;9..144,700;9..144,900&family=JetBrains+Mono:wght@400;500;600&display=swap');
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@latest/dist/web/static/pretendard.css');

/* ===== Tokens — copied verbatim from mockup v2.5 :root ===== */
:root {
  --paper: #F7F3EB;
  --paper-deep: #EFE9DC;
  --paper-edge: #E5E0D5;
  --ink: #1A1A1A;
  --ink-soft: #3D3D3D;
  --ink-mute: #6E6E6E;
  --ink-faint: #9B9285;
  --rule: #D8D2C2;
  --rule-soft: #E8E2D2;
  --accent: #C8102E;
  --accent-deep: #9A0C24;
  --gold: #9B7B0F;
  --gold-soft: #C9A648;
  --pass: #0A5F38;
  --pass-soft: #E6EFE9;
  --fail: #7A1F1F;
  --fail-soft: #F0E5E5;
  --neutral: #5A5A5A;
  --neutral-soft: #ECE7DA;
  --shadow-frame: 0 1px 2px rgba(26,26,26,0.04), 0 8px 24px rgba(26,26,26,0.06), 0 32px 60px rgba(26,26,26,0.08);
}

/* ===== Reset + page frame ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Inter', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
}
/* Mobile-first defaults (A5): 16px page padding, full viewport width.
   --page-pad-x lets v3 cards break out to the viewport edges via
   `margin: 0 calc(-1 * var(--page-pad-x))` — value flips automatically
   when the desktop @media block bumps the page padding to 32px. */
body {
  --page-pad-x: 16px;
  min-height: 100vh;
  margin: 0 auto;
  padding: 18px var(--page-pad-x);
  overflow-x: hidden;  /* defensive: nothing should ever push viewport wide */
}
main { padding-top: 20px; }

/* ===== Typography hierarchy ===== */
h1 {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: 'opsz' 80;
  font-weight: 500;
  font-size: 28px;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 0.4em;
}
h2 {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: 'opsz' 48;
  font-weight: 500;
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 1.5em 0 0.5em;
}
h3 {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: 'opsz' 24;
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 1.5em 0 0.5em;
}
p { line-height: 1.55; color: var(--ink-soft); margin-bottom: 0.8em; }
a { color: var(--ink); text-decoration: none; }
a:hover { text-decoration: underline; }
strong { font-weight: 600; color: var(--ink); }
code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88em;
  background: var(--paper-deep);
  padding: 1px 5px;
  border-radius: 3px;
}

/* ===== Header / nav =====
   Mobile-first: nav stacks (flex-column); desktop unstacks (flex-row) in
   the @media (min-width: 720px) block. */
nav {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 12px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--rule);
}
nav > div { display: flex; align-items: center; gap: 18px; }
nav a { font-size: 13px; color: var(--ink-mute); }
nav a:hover { color: var(--ink); text-decoration: none; }
nav strong {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.02em;
  color: var(--ink);
}
nav strong::after { content: '.'; color: var(--accent); }
.nav-email {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--ink-mute);
}
form.logout { display: inline; }
form.logout button {
  background: transparent;
  color: var(--ink-mute);
  border: 0;
  padding: 0;
  margin: 0;
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
}
form.logout button:hover { color: var(--accent); text-decoration: underline; }

/* ===== Eyebrow / meta lines ===== */
.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.prose-summary { font-size: 15px; color: var(--ink-soft); line-height: 1.6; }
.window-line {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  margin-bottom: 0.6em;
}
.vintage-line {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-top: 2.5em;
  padding-top: 1em;
  border-top: 1px solid var(--rule-soft);
}
.empty-state {
  padding: 3em 1em;
  text-align: center;
  color: var(--ink-faint);
  font-style: italic;
}

/* ===== Buttons + form inputs ===== */
button {
  font-family: 'Pretendard', sans-serif;
  font-size: 15px;
  font-weight: 600;
  background: var(--ink);
  color: var(--paper);
  border: none;
  padding: 13px 18px;
  border-radius: 4px;
  cursor: pointer;
}
button:hover { background: var(--ink-soft); }
input[type=email] {
  width: 100%;
  padding: 11px 12px;
  font-family: 'Pretendard', sans-serif;
  font-size: 15px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--rule);
  border-radius: 4px;
}
input[type=email]::placeholder {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--ink-faint);
}
input[type=email]:focus { outline: none; border-color: var(--ink); }
.error {
  font-size: 13px;
  color: var(--fail);
  background: var(--fail-soft);
  border: 1px solid var(--fail);
  border-radius: 4px;
  padding: 9px 12px;
  margin: 1em 0;
}

/* ===== Auth flow (login / register — email/password + Kakao) ===== */
/* Block 12 (revised, Day 9): centred card wrapper for the auth pages. */
.auth-card {
  max-width: 380px;
  margin: 64px auto 0;
  background: #FFFFFF;
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 32px;
}
.auth-card form { margin-top: 16px; }
.auth-card button { width: 100%; }

/* Active-registration auth pages (email/password + Kakao) */
input[type=password],
input[type=text] {
  width: 100%;
  padding: 11px 12px;
  font-family: 'Pretendard', sans-serif;
  font-size: 15px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--rule);
  border-radius: 4px;
}
input[type=password]::placeholder,
input[type=text]::placeholder {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--ink-faint);
}
input[type=password]:focus,
input[type=text]:focus { outline: none; border-color: var(--ink); }
.auth-card form input { margin-bottom: 10px; }
.auth-divider {
  display: flex;
  align-items: center;
  text-align: center;
  color: var(--ink-faint);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 18px 0;
}
.auth-divider::before,
.auth-divider::after { content: ""; flex: 1; border-bottom: 1px solid var(--rule); }
.auth-divider span { padding: 0 10px; }
.btn-kakao {
  display: block;
  box-sizing: border-box;
  width: 100%;
  margin-top: 16px;
  padding: 13px 18px;
  text-align: center;
  text-decoration: none;
  font-family: 'Pretendard', sans-serif;
  font-size: 15px;
  font-weight: 600;
  background: #FEE500;
  color: #191600;
  border-radius: 4px;
}
.btn-kakao:hover { background: #f5dd00; }
.auth-foot { margin-top: 18px; font-size: 13px; color: var(--ink-mute); text-align: center; }
.auth-foot a { color: var(--ink); text-decoration: underline; }

/* ===== Signal index ===== */
.signal-card {
  background: #FFFFFF;
  border: 1px solid var(--paper-edge);
  border-radius: 4px;
  margin-bottom: 12px;
}
.signal-card a { display: block; padding: 18px 20px; color: var(--ink); }
.signal-card a:hover { text-decoration: none; background: var(--paper-deep); }
.signal-card h2 {
  font-size: 19px;
  font-variation-settings: 'opsz' 40;
  margin: 4px 0 6px;
}
.signal-card p { font-size: 13px; color: var(--ink-mute); margin-bottom: 10px; }
.signal-card .metrics { gap: 18px; margin: 0; }
.signal-card .metrics span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
}

/* ===== Metrics (signal detail) ===== */
.metrics { display: flex; flex-wrap: wrap; gap: 24px; margin: 1em 0 1.5em; }
.metric { min-width: 96px; }
.metric-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.metric-value {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: 'opsz' 36;
  font-size: 25px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-top: 2px;
}

/* ===== Charts (Day-6b SVG renderers; colours remapped to mockup palette) ===== */
.chart-container { margin: 1.2em 0 1.8em; }
.chart { width: 100%; height: auto; max-width: 720px; display: block; }
.chart-empty .empty-label {
  fill: var(--ink-faint);
  font-style: italic;
  font-size: 14px;
  font-family: 'JetBrains Mono', monospace;
}
.curve { fill: none; stroke-width: 1.5; }
.curve-gross { stroke: var(--ink); }
.curve-excess { stroke: var(--ink-mute); stroke-dasharray: 4 3; }
.axis-grid { stroke: var(--rule-soft); stroke-width: 0.5; }
.axis-tick { stroke: var(--ink-faint); stroke-width: 1; }
.axis-zero { stroke: var(--ink-mute); stroke-width: 1; }
.axis-label { fill: var(--ink-mute); font-size: 11px; font-family: 'JetBrains Mono', monospace; }
.oos-marker { stroke: var(--gold); stroke-width: 1; stroke-dasharray: 4 3; }
.oos-label { fill: var(--gold); font-size: 11px; font-weight: 600; font-family: 'JetBrains Mono', monospace; }
.legend-bg { fill: #FFFFFF; stroke: var(--rule); stroke-width: 0.5; }
.legend-label { fill: var(--ink-soft); font-size: 11px; font-family: 'JetBrains Mono', monospace; }
.bar { stroke-width: 0; }
.bar-positive { fill: var(--pass); }
.bar-negative { fill: var(--fail); }
.bar-partial { opacity: 0.55; }

/* ===== Known-issues index ===== */
.issue-list { list-style: none; margin: 1.2em 0; border-top: 1px solid var(--rule-soft); }
.issue-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 13px 2px;
  border-bottom: 1px solid var(--rule-soft);
}
.issue-item::before { content: none; }
.issue-item a { font-size: 15px; color: var(--ink); }
.issue-status {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mute);
  white-space: nowrap;
}

/* ===== Markdown-rendered content (known-issue detail, methodology) ===== */
.issue-body, .methodology-body, .legal-body { max-width: 680px; }
.issue-body p, .methodology-body p, .legal-body p { line-height: 1.65; }
.issue-body blockquote, .methodology-body blockquote, .legal-body blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 14px;
  color: var(--ink-mute);
  margin: 1em 0;
}
/* Legal pages (/terms, /privacy) */
.legal-back {
  display: inline-block;
  margin-bottom: 18px;
  font-size: 13px;
  color: var(--ink-mute);
  text-decoration: none;
}
.legal-back:hover { color: var(--ink); text-decoration: underline; }
.legal-body { font-size: 14px; color: var(--ink-soft); }
.legal-body h2 { font-size: 19px; margin: 1.6em 0 0.6em; padding-bottom: 6px; border-bottom: 1px solid var(--rule-soft); }
.legal-body h3 { font-size: 15px; margin: 1.4em 0 0.5em; color: var(--ink); }
.legal-body ul, .legal-body ol { padding-left: 22px; }
.legal-body li { margin-bottom: 6px; line-height: 1.6; }
.legal-body a { color: var(--ink); text-decoration: underline; }

/* ===== Content lists (anchor block, affected-signals, markdown ul) ===== */
main ul { list-style: none; }
main ul li { position: relative; padding-left: 16px; font-size: 14px; line-height: 1.6; }
main ul li::before {
  content: '·';
  color: var(--accent);
  font-weight: 600;
  font-size: 18px;
  line-height: 1;
  position: absolute;
  left: 0;
}
/* the known-issues index uses a flex row, not a bulleted list */
.issue-list li { padding-left: 0; }
.issue-list li::before { content: none; }

/* ===== Error page ===== */
.error-page { text-align: center; padding: 4em 1em 3em; }
.error-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.error-code {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: 'opsz' 144;
  font-size: 96px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ink);
}
.error-detail { color: var(--ink-soft); margin: 0.8em 0 1.6em; }
.error-page a { color: var(--ink); text-decoration: underline; }

/* ===== Signals-index footer blocks (Feature #3) ===== */
/* Ported verbatim from backtest_product_mockup_v2_5.html lines 1122-1166
   and 1238-1289. Two understated disclosure blocks that sit at the
   bottom of /signals after the validated card grid. */

/* Footnote list for tested-not-significant */
.not-sig-footnote {
  padding: 20px 20px 22px;
  background: var(--paper-deep);
  border-top: 1px solid var(--rule);
  margin-top: 24px;
}
.not-sig-footnote .label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  font-weight: 600;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.not-sig-footnote .label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--rule);
}
.not-sig-footnote .items {
  font-size: 11.5px;
  line-height: 1.65;
  color: var(--ink-mute);
  font-style: italic;
}
.not-sig-footnote .items .item {
  display: inline;
}
.not-sig-footnote .items .item:not(:last-child)::after {
  content: ' · ';
  color: var(--rule);
  font-style: normal;
  margin: 0 2px;
}
.not-sig-footnote .note {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  margin-top: 10px;
  line-height: 1.5;
}

/* Pilot footnote block (net-cost + regime context) */
.pilot-footnotes {
  padding: 22px 20px 24px;
  background: linear-gradient(180deg, var(--paper-deep) 0%, #F2EDDC 100%);
  border-top: 2px solid var(--rule);
}
.pilot-footnotes .head {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.pilot-footnotes .head::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--rule);
}
.pilot-footnotes .fn {
  margin-bottom: 12px;
  padding-left: 14px;
  position: relative;
}
.pilot-footnotes .fn:last-child { margin-bottom: 0; }
.pilot-footnotes .fn::before {
  content: '';
  position: absolute;
  left: 0; top: 6px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.pilot-footnotes .fn-label {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink);
  display: block;
  margin-bottom: 3px;
  letter-spacing: -0.01em;
}
.pilot-footnotes .fn-body {
  font-size: 11px;
  line-height: 1.55;
  color: var(--ink-mute);
}

/* ===== Signals index v3 card system =====
   Ported from backtest_product_mockup_v3_0.html lines 806-1359.
   Replaces the legacy `.signal-card` block above (which is left in place
   for any auxiliary view that still references it). signals_index.html
   renders v3 cards exclusively. */

.signals-section-head {
  padding: 20px 20px 12px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  background: var(--paper-deep);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule-soft);
  margin: 0 calc(-1 * var(--page-pad-x));
}
.signals-section-head .title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.signals-section-head .count {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.signals-section-sub {
  padding: 0 20px 16px;
  font-size: 11px;
  color: var(--ink-mute);
  line-height: 1.55;
  background: var(--paper-deep);
  border-bottom: 1px solid var(--rule);
  margin: 0 calc(-1 * var(--page-pad-x)) 4px;
}

.signal-card-v3 {
  padding: 18px 20px 16px;
  border-bottom: 1px solid var(--rule-soft);
  background: white;
  position: relative;
  margin: 0 calc(-1 * var(--page-pad-x));
}
.signal-card-v3 a.scard-name { color: inherit; }
.signal-card-v3 a.scard-name:hover { text-decoration: none; color: var(--accent); }
.signal-card-v3.active::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--accent);
}
.signal-card-v3.combo::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--gold) 100%);
}
.signal-card-v3.combo { background: #FFFDF5; }
.signal-card-v3.not-significant { background: #FAF8F2; }

.scard-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 4px;
  gap: 10px;
}
.scard-name {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.2;
}
.scard-name .plus {
  color: var(--accent);
  font-style: italic;
  font-weight: 400;
  margin: 0 1px;
}
.signal-card-v3.not-significant .scard-name {
  color: var(--ink-mute);
  font-weight: 500;
}
.scard-status {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  padding: 3px 8px;
  border-radius: 2px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  flex-shrink: 0;
}
.scard-status.cadence-event,
.scard-status.cadence-weekly,
.scard-status.cadence-monthly {
  background: var(--paper-deep);
  color: var(--ink-mute);
  border: 1px solid var(--rule);
}
.scard-status.not-sig { background: var(--neutral-soft); color: var(--neutral); }
.scard-status.retracted { background: var(--fail-soft); color: var(--fail); }
.scard-status.reverse { background: rgba(155,123,15,0.15); color: var(--gold); }

.scard-mech {
  font-size: 11.5px;
  color: var(--ink-mute);
  line-height: 1.45;
  margin-bottom: 14px;
}

.scard-perf-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: end;
}
.scard-return {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: 'opsz' 60;
  letter-spacing: -0.025em;
  line-height: 1;
}
.scard-return .v {
  font-size: 28px;
  font-weight: 600;
  color: var(--pass);
  display: block;
}
.scard-return .v.gold { color: var(--pass); }
.scard-return .k {
  font-family: 'JetBrains Mono', monospace;
  font-size: 8px;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-top: 5px;
  display: block;
  letter-spacing: 0.04em;
}
.scard-return .excess-line {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  color: var(--ink-mute);
  margin-top: 6px;
  letter-spacing: 0.02em;
  display: block;
  font-weight: 500;
}
.scard-return .excess-line.italic { font-style: italic; }
.scard-return .excess-line.lockup { color: var(--accent); font-weight: 600; }
.scard-return .excess-line .ev {
  color: var(--ink-soft);
  font-weight: 600;
}

.scard-co-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 8px;
  color: var(--gold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  margin-left: 8px;
}
.scard-co-badge::before {
  content: '◇';
  font-size: 9px;
}

/* F8: at-a-glance follow-state badge on index cards. Grouped with the
   cadence pill in the card's top-right. Reuses the design-system tokens
   from the detail-page follow-btn states (--pass green for following,
   --ink-mute for paused). No badge renders for unfollowed cards. */
.scard-meta-right {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.card-follow-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  padding: 3px 8px;
  border-radius: 2px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  white-space: nowrap;
}
.card-follow-badge.following {
  background: var(--pass-soft);
  color: var(--pass);
}
.card-follow-badge.paused {
  background: var(--paper-deep);
  color: var(--ink-mute);
  font-style: italic;
}

.scard-chart {
  height: 50px;
  position: relative;
  padding-bottom: 12px;
}
.scard-chart svg { width: 100%; height: 100%; display: block; }
.scard-chart .yr-labels {
  display: flex;
  justify-content: space-between;
  font-family: 'JetBrains Mono', monospace;
  font-size: 8px;
  color: var(--ink-mute);
  letter-spacing: 0.04em;
  position: absolute;
  bottom: 0;
  left: 0; right: 0;
}

.scard-side {
  text-align: right;
  font-family: 'JetBrains Mono', monospace;
}
.scard-side .v {
  font-family: 'Fraunces', serif;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.scard-side .k {
  font-size: 8px;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 2px;
}

.signal-card-v3.not-significant .scard-perf-row {
  grid-template-columns: 1fr auto;
}
.signal-card-v3.not-significant .scard-return .v {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-mute);
}

/* Sparkline bar colours — fill class-driven; opacity inline per-bar so
   taller bars read stronger (sparkline.py emits opacity attribute). */
.spark-bar.spark-pos { fill: var(--pass); }
.spark-bar.spark-neg { fill: var(--fail); }

/* ===== Signal detail v3 (A2) =====
   Ported from backtest_product_mockup_v3_0.html lines 224-243, 1520-1546,
   1592-1666, 1668-1699, 1897-1910. */

.detail-header {
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--rule-soft);
  margin: 0 calc(-1 * var(--page-pad-x)) 0;
}
.detail-header .back-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 16px;
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
}
.detail-header .back-btn:hover { color: var(--accent); }
.detail-header .label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
  text-transform: uppercase;
}

.signal-detail-hero {
  padding: 24px 20px 22px;
  border-bottom: 1px solid var(--rule);
  background: linear-gradient(180deg, #FFFDF7 0%, #FDFCF9 100%);
  margin: 0 calc(-1 * var(--page-pad-x));
}
.signal-detail-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 10px;
  text-transform: uppercase;
}
.signal-detail-name {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: 'opsz' 60;
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin-bottom: 10px;
}
.signal-detail-summary {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.6;
  margin-bottom: 14px;
}
.signal-detail-badges { display: flex; gap: 6px; flex-wrap: wrap; }
.detail-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  padding: 3px 7px;
  border-radius: 2px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
}
.detail-badge.active { background: var(--accent); color: white; }
.detail-badge.cadence { background: var(--paper-deep); color: var(--ink-mute); }

.headline-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--rule-soft);
  margin: 0 calc(-1 * var(--page-pad-x));
}
.headline-cell {
  padding: 16px 8px;
  text-align: center;
  border-right: 1px solid var(--rule-soft);
}
.headline-cell:last-child { border-right: none; }
.headline-cell .v {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.015em;
  display: block;
  line-height: 1;
}
.headline-cell .v.pass-color { color: var(--pass); }
.headline-cell .v.muted { color: var(--ink-mute); }
.headline-cell .k {
  font-family: 'JetBrains Mono', monospace;
  font-size: 8px;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-top: 6px;
  display: block;
}

.chart-card {
  padding: 18px 0 14px;
  border-bottom: 1px solid var(--rule-soft);
}
.chart-card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}
.chart-title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 14px;
  font-weight: 600;
}
.chart-meta { font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--ink-mute); }

.big-chart-section {
  padding: 20px 0;
  border-bottom: 1px solid var(--rule-soft);
}
.big-chart-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 14px;
}
.big-chart-title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
/* Basis qualifier — "(gross)" / "(excess vs KOSDAQ)" — muted, lighter weight
   so it reads as a subtitle to the bar chart, not part of the heading. */
.big-chart-basis {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 400;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
}
.big-chart-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--ink-mute);
  letter-spacing: 0.04em;
}

.method-section {
  padding: 20px 0;
  border-bottom: 1px solid var(--rule-soft);
}
.method-section .title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 10px;
}
.method-section .body { font-size: 12px; line-height: 1.65; color: var(--ink-soft); }
.method-section .body p { margin-bottom: 8px; }
.method-section .body p:last-child { margin-bottom: 0; }

.compliance-footer {
  padding: 18px 20px 16px;
  background: #FAF9F4;
  border-top: 1px solid var(--rule-soft);
  margin: 18px calc(-1 * var(--page-pad-x)) 0;
}
.compliance-footer .tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--ink-mute);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.compliance-footer .text { font-size: 11px; color: var(--ink-mute); line-height: 1.6; }

/* Equity-curve gradient under the gross line (A2). The gradient stop is a
   CSS-styled element; .curve-gross-fill receives fill="url(#gross-grad)"
   via the SVG attribute in equity_curve.py. */
.curve-gross-fill { fill: url(#gross-grad); }

/* Annual-bar on-bar labels (A2). Class-styled so on-bar values inherit
   pass / fail colours from the design system. */
.bar-label {
  fill: var(--pass);
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  font-weight: 600;
}
.bar-label-neg { fill: var(--fail); }

/* ===== Responsive nav (A3) =====
   2-tab bottom bar visible at <720px (D3-locked: Signals + Account); top
   nav at ≥720px (existing nav block retains Methodology + Known Issues).
   At mobile width, top nav collapses to the wordmark only — Methodology
   and Known Issues are reachable via Account tab (rendered in A4). */

.tab-bar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: 64px;
  background: rgba(253,252,249,0.96);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--rule);
  display: flex;
  align-items: stretch;
  z-index: 10;
}
.tab-bar .tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: 10px;
  color: var(--ink-faint);
  text-decoration: none;
  position: relative;
}
.tab-bar .tab:hover { color: var(--ink-soft); text-decoration: none; }
.tab-bar .tab .icon { font-size: 18px; line-height: 1; }
.tab-bar .tab .label {
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.tab-bar .tab.active { color: var(--ink); }
.tab-bar .tab.active .label { font-weight: 600; }
.tab-bar .tab.active::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 32px; height: 2px;
  background: var(--accent);
}

/* Reserve bottom space for the fixed tab-bar on authed mobile views. */
body.has-tab-bar { padding-bottom: 88px; }

/* Desktop: hide bottom tab-bar; show full top nav as before. */
@media (min-width: 720px) {
  .tab-bar { display: none; }
  body.has-tab-bar { padding-bottom: 32px; }
}

/* Mobile (<720px): collapse top nav to the wordmark — Methodology, Known
   Issues, Account, email, logout move offscreen because the tab-bar
   provides primary navigation and Account contains the rest. */
@media (max-width: 719px) {
  nav .nav-desktop-only { display: none; }
}

/* ===== Account tab (A4) =====
   Ported from backtest_product_mockup_v3_0.html lines 245-267 (section
   wrappers), 1007-1052 (.strategy-watch-row), 1912-2034 (.profile-strip,
   .alert-card, .alert-toggle-row, .toggle-pill, .research-link-row). */

.account-page { margin: 0 calc(-1 * var(--page-pad-x)); }

.profile-strip {
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  border-bottom: 1px solid var(--rule-soft);
}
.profile-avatar {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--ink) 0%, var(--ink-soft) 100%);
  color: var(--paper);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 18px;
  flex-shrink: 0;
  text-transform: uppercase;
}
.profile-info { min-width: 0; flex: 1; }
.profile-info .name {
  font-size: 15px;
  font-weight: 600;
  word-break: break-all;
}
.profile-info .meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--ink-mute);
  margin-top: 2px;
  letter-spacing: 0.04em;
}
.profile-info .meta .premium { color: var(--gold); font-weight: 600; }

.section {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--rule-soft);
}
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 14px;
}
.section-head .title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.section-head .meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.section-empty {
  font-size: 12px;
  color: var(--ink-faint);
  font-style: italic;
  padding: 8px 0 0;
}

.strategy-watch-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--rule-soft);
}
.strategy-watch-row .sw-info { min-width: 0; }
.strategy-watch-row .sw-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 3px;
  line-height: 1.3;
}
.strategy-watch-row .sw-name .combo-mark {
  color: var(--accent);
  font-style: italic;
  font-family: 'Fraunces', serif;
  margin: 0 2px;
}
.strategy-watch-row .sw-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  color: var(--ink-mute);
  letter-spacing: 0.05em;
}
.strategy-watch-row .sw-count {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  color: var(--ink);
  text-align: right;
}
.strategy-watch-row .sw-count .label {
  font-size: 9px;
  color: var(--ink-mute);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 500;
  margin-top: 2px;
  display: block;
}

.alert-card {
  margin: 16px 20px;
  padding: 14px 16px;
  background: linear-gradient(135deg, #FFFCF2 0%, #FAF5E5 100%);
  border: 1px solid var(--gold);
  border-radius: 4px;
}
.alert-card .title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}
.alert-card .desc {
  font-size: 11px;
  color: var(--ink-soft);
  line-height: 1.5;
  margin-bottom: 10px;
}
.alert-toggle-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  font-size: 12px;
  border-top: 1px solid rgba(155,123,15,0.15);
  gap: 12px;
}
.alert-toggle-row .alert-text { color: var(--ink); flex: 1; line-height: 1.4; }
.alert-toggle-row .alert-text .name { font-weight: 500; }
.alert-toggle-row .alert-text .sub {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  color: var(--ink-mute);
  margin-top: 1px;
  letter-spacing: 0.04em;
}

/* Toggle pill — visually present but click-inert in S1; wired in S2/B1. */
.toggle-pill {
  width: 30px; height: 17px;
  background: var(--ink);
  border-radius: 9px;
  position: relative;
  flex-shrink: 0;
  cursor: not-allowed;
  border: 0;
  padding: 0;
}
.toggle-pill::after {
  content: '';
  position: absolute;
  width: 13px; height: 13px;
  background: white;
  border-radius: 50%;
  top: 2px;
  right: 2px;
}
.toggle-pill.off { background: var(--rule); }
.toggle-pill.off::after { right: auto; left: 2px; }

.research-link-row {
  padding: 14px 20px;
  border-bottom: 1px solid var(--rule-soft);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: white;
}
.research-link-row.is-button {
  background: white;
  border: 0;
  width: 100%;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  color: var(--ink);
  border-radius: 0;
}
.research-link-row.is-button:hover { background: var(--paper-deep); }
.research-link-row .text { flex: 1; }
.research-link-row .text .label {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
}
.research-link-row .text .sub {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--ink-mute);
  margin-top: 2px;
  letter-spacing: 0.04em;
}
.research-link-row .arrow { color: var(--ink-mute); font-size: 14px; }
.research-link-row a { display: block; color: inherit; }
.research-link-row a:hover { text-decoration: none; }

/* ===== Landing page (A6) =====
   Ported from backtest_product_mockup_v3_0.html lines 303-682. Mobile-
   first; desktop tightens typography in the @media block below. All
   styles class-based — CSP-clean (no inline style="" attrs, no <style>
   tags outside this file). Render uses the existing token block:
   --paper, --ink, --accent, --rule, --gold-soft, etc. */

.landing-hero {
  padding: 56px 24px 40px;
  background: linear-gradient(180deg, #FDFCF9 0%, #FBF8F2 100%);
  border-bottom: 1px solid var(--rule-soft);
  position: relative;
  overflow: hidden;
  margin: 0 calc(-1 * var(--page-pad-x));
}
.landing-hero::before {
  content: '';
  position: absolute;
  top: 0; right: -40px;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(200,16,46,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.landing-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.landing-eyebrow .pill-dot {
  width: 5px; height: 5px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
}
.landing-title {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: 'opsz' 80;
  font-weight: 500;
  font-size: 36px;
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
  color: var(--ink);
}
.landing-title em {
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}
.landing-sub {
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-soft);
  margin-bottom: 28px;
}
.cta-primary {
  display: block;
  width: 100%;
  background: var(--ink);
  color: var(--paper);
  border: none;
  padding: 16px;
  font-family: 'Pretendard', sans-serif;
  font-size: 15px;
  font-weight: 600;
  text-align: center;
  border-radius: 4px;
  margin-bottom: 8px;
  text-decoration: none;
  cursor: pointer;
}
.cta-primary:hover { background: var(--ink-soft); text-decoration: none; }
.cta-primary .price {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.06em;
  color: rgba(247,243,235,0.7);
  margin-top: 4px;
  font-weight: 500;
}
.cta-secondary {
  display: block;
  width: 100%;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule);
  padding: 13px;
  font-size: 13px;
  font-weight: 500;
  text-align: center;
  border-radius: 4px;
  text-decoration: none;
  cursor: pointer;
  font-family: 'Pretendard', sans-serif;
}
.cta-secondary:hover { background: var(--paper-deep); text-decoration: none; }

.landing-section {
  padding: 36px 24px 32px;
  border-bottom: 1px solid var(--rule-soft);
  margin: 0 calc(-1 * var(--page-pad-x));
}
.landing-section.tinted { background: #FBF8F2; }
.landing-section-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
  font-weight: 500;
}
.landing-section-title {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: 'opsz' 48;
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin-bottom: 14px;
  color: var(--ink);
}
.landing-section-title em { font-style: italic; color: var(--accent); font-weight: 400; }

.belief-list { margin-top: 20px; }
.belief {
  display: flex;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule-soft);
}
.belief:last-child { border-bottom: none; padding-bottom: 4px; }
.belief-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.05em;
  flex-shrink: 0;
  width: 26px;
  padding-top: 3px;
}
.belief-body { flex: 1; }
.belief-title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-bottom: 6px;
  line-height: 1.25;
  color: var(--ink);
}
.belief-text {
  font-size: 12.5px;
  color: var(--ink-soft);
  line-height: 1.6;
}
.belief-text strong { color: var(--ink); font-weight: 600; }

.method-step-list { margin-top: 18px; }
.method-step {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule-soft);
}
.method-step:last-child { border-bottom: none; }
.method-step-n {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--ink-mute);
  font-weight: 500;
  letter-spacing: 0.08em;
  flex-shrink: 0;
  width: 28px;
  padding-top: 4px;
}
.method-step-body { flex: 1; }
.method-step-title {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--ink);
}
.method-step-text {
  font-size: 12px;
  color: var(--ink-mute);
  line-height: 1.55;
}

.research-output-section {
  padding: 40px 24px 36px;
  background: #F2EDDE;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  position: relative;
  margin: 0 calc(-1 * var(--page-pad-x));
}
.research-output-section::before {
  content: '';
  position: absolute;
  top: 0; left: 24px;
  width: 32px; height: 2px;
  background: var(--accent);
}
.research-output-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
  font-weight: 500;
}
.research-output-title {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: 'opsz' 60;
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.028em;
  line-height: 1.08;
  margin-bottom: 22px;
  color: var(--ink);
}
.research-output-title em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}
.research-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  margin-bottom: 22px;
}
.research-stat {
  padding: 22px 8px 20px;
  text-align: center;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  position: relative;
}
.research-stat:nth-child(2n) { border-right: none; }
.research-stat:nth-last-child(-n+2) { border-bottom: none; }
.research-stat .v {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: 'opsz' 96;
  font-size: 42px;
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1;
  margin-bottom: 6px;
  color: var(--ink);
}
.research-stat .v .plus,
.research-stat .v .tilde,
.research-stat .v .pct {
  font-size: 28px;
  vertical-align: top;
  margin: 4px 0 0;
  display: inline-block;
  font-weight: 400;
  color: var(--accent);
}
.research-stat .v .pct { margin-left: 1px; }
.research-stat .v .yr-plus {
  font-size: 18px;
  letter-spacing: 0.04em;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
  text-transform: uppercase;
  margin-left: 6px;
  color: var(--ink-mute);
}
.research-stat .k {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  color: var(--ink-mute);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.4;
  margin-top: 4px;
}
.research-output-coda {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--ink-soft);
  font-style: italic;
  padding: 0 4px;
}
.research-output-coda em {
  font-style: normal;
  font-weight: 600;
  color: var(--ink);
}

.pricing-card {
  background: white;
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 24px 22px;
  margin-top: 14px;
}
.pricing-card-tier {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 10px;
  font-weight: 600;
}
.pricing-card-price {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: 'opsz' 60;
  font-size: 36px;
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--ink);
}
.pricing-card-price .per {
  font-size: 14px;
  color: var(--ink-mute);
  font-weight: 400;
  margin-left: 4px;
}
.pricing-card-list {
  list-style: none;
  font-size: 12px;
  color: var(--ink-soft);
  margin: 18px 0;
  line-height: 1.8;
}
.pricing-card-list li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding-left: 0;
}
.pricing-card-list li::before {
  content: '·';
  color: var(--accent);
  font-weight: 600;
  flex-shrink: 0;
  font-size: 16px;
  line-height: 1;
  position: static;
}

.landing-final-cta {
  padding: 44px 24px 36px;
  text-align: center;
  background: var(--ink);
  color: var(--paper);
  margin: 0 calc(-1 * var(--page-pad-x));
}
.landing-final-cta .head {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: 'opsz' 48;
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.025em;
  margin-bottom: 8px;
  line-height: 1.15;
}
.landing-final-cta .head em { color: var(--gold-soft); font-style: italic; }
.landing-final-cta .sub {
  font-size: 13px;
  color: rgba(247,243,235,0.6);
  margin-bottom: 22px;
}
.landing-final-cta .cta-final {
  background: var(--paper);
  color: var(--ink);
  border: none;
  padding: 14px 32px;
  font-family: 'Pretendard', sans-serif;
  font-weight: 600;
  font-size: 14px;
  border-radius: 4px;
  width: 100%;
  display: block;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
}
.landing-final-cta .cta-final:hover { background: var(--paper-deep); text-decoration: none; }

.landing-footer {
  padding: 22px 24px;
  background: #0F0F0F;
  color: rgba(247,243,235,0.5);
  font-size: 10px;
  line-height: 1.6;
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.04em;
  margin: 0 calc(-1 * var(--page-pad-x));
}
.landing-footer .landing-footer-links { margin-bottom: 10px; }
.landing-footer .landing-footer-links a { color: rgba(247,243,235,0.7); text-decoration: none; margin: 0 6px; }
.landing-footer .landing-footer-links a:hover { color: #fff; text-decoration: underline; }
.landing-footer .biz { color: rgba(247,243,235,0.5); font-size: 9px; }
.landing-footer .legal { margin-top: 8px; font-size: 9px; }

/* ===== Global app footer (business info + legal links) — base.html ===== */
.site-footer {
  margin: 36px calc(-1 * var(--page-pad-x)) 0;
  padding: 20px var(--page-pad-x) 22px;
  background: var(--paper-deep);
  border-top: 1px solid var(--rule-soft);
  font-family: 'JetBrains Mono', monospace;
  color: var(--ink-faint);
}
.site-footer-links { margin-bottom: 10px; }
.site-footer-links a {
  color: var(--ink-mute);
  font-size: 12px;
  text-decoration: none;
  margin-right: 14px;
}
.site-footer-links a:hover { color: var(--ink); text-decoration: underline; }
.site-footer-biz { font-size: 10px; line-height: 1.7; color: var(--ink-mute); }
.site-footer-legal { margin-top: 10px; font-size: 9px; line-height: 1.6; color: var(--ink-faint); }
/* keep the global footer clear of the fixed mobile tab bar */
body.has-tab-bar .site-footer { margin-bottom: 64px; }

/* Public-chrome header (used by public_base.html). Minimal — wordmark
   on the left, "Sign in" link on the right. */
.public-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 0;
}
.public-header .brand {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}
.public-header .brand::after { content: '.'; color: var(--accent); }
.public-header .sign-in {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  text-decoration: none;
}
.public-header .sign-in:hover { color: var(--accent); }
.public-header .public-nav { display: flex; align-items: center; gap: 22px; }
.public-header .nav-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  text-decoration: none;
}
.public-header .nav-link:hover { color: var(--accent); }

/* Smooth-scroll for in-page "See how it works ↓" fragment anchor. */
html { scroll-behavior: smooth; }

/* ===== Desktop overrides (A5 — mobile-first; ≥720px) =====
   Single consolidated block. Everything outside this is mobile default. */
@media (min-width: 720px) {
  body {
    --page-pad-x: 32px;
    max-width: 960px;
    padding: 32px var(--page-pad-x);
  }
  main { padding-top: 28px; }
  h1 { font-size: 36px; margin-bottom: 0.4em; }
  h2 { font-size: 23px; margin: 1.7em 0 0.5em; }
  .metric-value { font-size: 25px; }
  .error-code { font-size: 96px; }
  nav {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* ============ Sprint 2 additions: B1 (watchlist/follow) + B3 (portfolio) + F4 (signal-index head) ============ */

/* F4: signal-index-head — page header block on /signals (mockup v3.0 lines 2263-2267, CSS 777-804) */
.signal-index-head {
  padding: 26px 20px 22px;
  background: linear-gradient(180deg, #FFFDF7 0%, #FDFCF9 100%);
  border-bottom: 1px solid var(--rule);
}
.signal-index-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
  font-weight: 500;
}
.signal-index-title {
  font-family: 'Fraunces', Georgia, serif;
  font-variation-settings: 'opsz' 48;
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin-bottom: 8px;
}
.signal-index-deck {
  font-size: 12px;
  line-height: 1.55;
  color: var(--ink-mute);
}

/* B1: follow-action band + follow-btn states (mockup v3.0 CSS 1557-1589).
   States: default "Follow", .follow-btn--following ("Following"),
   .follow-btn--paused ("Following · paused"). All three POST via <form>;
   per S2 brief §2.4, signal-detail button is binary toggle. */
.follow-action {
  padding: 18px 20px;
  background: var(--paper-deep);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--rule);
}
.follow-action .text { flex: 1; }
.follow-action .label {
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 2px;
}
.follow-action .sub {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  color: var(--ink-mute);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.follow-action form { margin: 0; }
.follow-btn {
  background: var(--ink);
  color: var(--paper);
  border: none;
  padding: 10px 18px;
  font-family: 'Pretendard', sans-serif;
  font-size: 12px;
  font-weight: 600;
  border-radius: 4px;
  letter-spacing: 0.01em;
  cursor: pointer;
}
.follow-btn--following {
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--rule);
}
.follow-btn--paused {
  background: var(--paper);
  color: var(--ink-mute);
  border: 1px solid var(--rule);
  font-style: italic;
}

/* B3: portfolio section (mockup v3.0 CSS 1701-1761) */
.portfolio-head {
  padding: 20px 20px 10px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.portfolio-head .title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.portfolio-head .meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--ink-mute);
}
.portfolio-sub {
  padding: 0 20px 12px;
  font-size: 11px;
  color: var(--ink-mute);
  line-height: 1.5;
}
.portfolio-sub strong { color: var(--ink); font-weight: 600; }
/* Construction disclosure (e.g. PEAD 25-cap) — distinct, slightly emphasised
   so the "tradeable basket ≠ full validated strategy" caveat is visible. */
.portfolio-construction-note {
  margin: 0 20px 12px;
  padding: 9px 11px;
  font-size: 11px;
  line-height: 1.5;
  color: var(--ink-mute);
  background: var(--rule-soft, rgba(0,0,0,0.03));
  border-left: 2px solid var(--ink-mute);
  border-radius: 3px;
}
.portfolio-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 10px;
  padding: 11px 20px;
  border-bottom: 1px solid var(--rule-soft);
  align-items: center;
}
.portfolio-row.header {
  background: var(--paper);
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.05em;
  color: var(--ink-mute);
  text-transform: uppercase;
  padding: 8px 20px;
}
.portfolio-row .stock-name { font-size: 13px; font-weight: 500; }
.portfolio-row .stock-name .tk {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--ink-mute);
  margin-left: 6px;
  letter-spacing: 0.04em;
}
.portfolio-row .rank {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink);
  text-align: right;
  min-width: 50px;
}
.portfolio-row .days {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--ink-mute);
  text-align: right;
  min-width: 36px;
}
.portfolio-row .combo-source {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  color: var(--ink-mute);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-top: 2px;
}
.portfolio-more {
  padding: 10px 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--ink-mute);
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--rule-soft);
}
.portfolio-empty {
  padding: 16px 20px;
  font-size: 12px;
  color: var(--ink-mute);
  border-bottom: 1px solid var(--rule-soft);
  font-style: italic;
}

/* Finding 6: JSON portfolio export affordance — muted, sits under the
   holdings table; intentionally subordinate to the dark .follow-btn CTA. */
.portfolio-download {
  padding: 12px 20px;
  border-bottom: 1px solid var(--rule-soft);
}
.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-mute);
  text-decoration: none;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 7px 12px;
  cursor: pointer;
}
.download-btn:hover { color: var(--accent); border-color: var(--accent); }

/* B1: account-tab watchlist empty-state hint */
.section-empty.is-watchlist {
  padding: 16px 20px;
  color: var(--ink-mute);
  font-size: 12px;
}

/* B1: enable toggle-pill cursor when wired (override default not-allowed
   in the inert S1 baseline). Forms inside watchlist rows and notification
   rows submit on click. */
.toggle-pill-form {
  margin: 0;
  display: inline-flex;
  flex-shrink: 0;
}
.toggle-pill-form .toggle-pill {
  cursor: pointer;
}

/* B1: unfollow inline button on watchlist row */
.strategy-watch-row form.unfollow-form { margin: 0; }
.strategy-watch-row .unfollow-btn {
  background: transparent;
  border: none;
  color: var(--ink-mute);
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  padding: 2px 4px;
}
.strategy-watch-row .unfollow-btn:hover { color: var(--accent); }

/* Follow-state simplification (2026-05-21): per-strategy "Notify" toggle.
   Visible label sits inline before the pill (form is inline-flex; align +
   gap added here). Label styling matches .unfollow-btn / .sw-count .label
   (mono 9px uppercase ink-mute) — no new tokens introduced. Scoped to the
   watchlist row so the alert-card notification pills are untouched. */
.strategy-watch-row .toggle-pill-form {
  align-items: center;
  gap: 6px;
}
.strategy-watch-row .toggle-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* Narrow viewports (<400px): trim card padding so the 4-cell headline-grid
   stays single-row without overflow at 380px Chrome devtools mobile. The
   v3 cards already break out via var(--page-pad-x); no additional negative
   margin is needed here. */
@media (max-width: 399px) {
  .headline-cell { padding: 14px 4px; }
  .headline-cell .v { font-size: 15px; }
  .scard-perf-row { gap: 8px; }
  .scard-return .v { font-size: 24px; }
  .scard-chart { height: 44px; }
  .portfolio-row { padding: 10px 16px; gap: 8px; }
  .portfolio-row.header { padding: 7px 16px; }
}