/* ═══════════════════════════════════════════════════════════════════════════
   PyFluent 2026 Cutting-Edge Design System
   Standalone Python, pandas, Polars, PySpark & Snowpark Code Intelligence
   ═══════════════════════════════════════════════════════════════════════════ */

:root {
  --bg: #070A12;
  --bg-elev: #0D121F;
  --card: #111827;
  --card-2: #161F33;
  --code-bg: #090D16;
  --line: #1E293B;
  --line-bright: #334155;
  --ink: #F8FAFC;
  --ink-2: #CBD5E1;
  --muted: #94A3B8;
  --subtle: #64748B;

  --accent: #38BDF8;
  --accent-2: #818CF8;
  --accent-3: #C084FC;
  --ok: #34D399;
  --ok-bg: rgba(52, 211, 153, 0.12);
  --warn: #FBBF24;
  --warn-bg: rgba(251, 191, 36, 0.12);
  --bad: #F87171;
  --bad-bg: rgba(248, 113, 113, 0.12);

  --cta: #38BDF8;
  --cta-hover: #7DD3FC;
  --cta-ink: #06101E;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(56, 189, 248, 0.08);
}

body.pf-lite {
  --bg: #F8FAFC;
  --bg-elev: #FFFFFF;
  --card: #FFFFFF;
  --card-2: #F1F5F9;
  --code-bg: #0F172A;
  --line: #E2E8F0;
  --line-bright: #CBD5E1;
  --ink: #0F172A;
  --ink-2: #334155;
  --muted: #475569;
  --subtle: #64748B;

  --accent: #0284C7;
  --accent-2: #4F46E5;
  --accent-3: #7C3AED;
  --ok: #059669;
  --ok-bg: rgba(5, 150, 105, 0.1);
  --warn: #D97706;
  --warn-bg: rgba(217, 119, 6, 0.1);
  --bad: #DC2626;
  --bad-bg: rgba(220, 38, 38, 0.1);

  --cta: #0F172A;
  --cta-hover: #1E293B;
  --cta-ink: #FFFFFF;

  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.08), 0 0 0 1px rgba(15, 23, 42, 0.06);
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--cta-hover);
}

.wrap {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 28px;
}

@media (max-width: 640px) {
  .wrap { padding: 0 18px; }
}

/* ── Sticky Top Navigation ── */
.pf-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 72px;
  display: flex;
  align-items: center;
  background: rgba(7, 10, 18, 0.84);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}

body.pf-lite .pf-header {
  background: rgba(255, 255, 255, 0.9);
}

.pf-header .wrap {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pf-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.03em;
  color: var(--ink) !important;
  text-decoration: none !important;
  margin-right: 16px;
}

.pf-logo img {
  height: 28px;
  width: auto;
  display: block;
}

.pf-logo .logo-light { display: none; height: 36px; }
.pf-logo .logo-dark { display: block; }
body.pf-lite .pf-logo .logo-light { display: block; }
body.pf-lite .pf-logo .logo-dark { display: none; }

.pf-nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.pf-nav-links a {
  padding: 8px 13px;
  border-radius: 8px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-2);
  transition: background 0.15s ease, color 0.15s ease;
}

.pf-nav-links a:hover,
.pf-nav-links a.is-active {
  background: var(--card);
  color: var(--ink);
}

.pf-spacer {
  flex: 1 1 auto;
}

.pf-nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pf-theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--ink-2);
  cursor: pointer;
  padding: 0;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.pf-theme-toggle:hover {
  border-color: var(--line-bright);
  color: var(--ink);
}

.pf-theme-toggle .ico-moon { display: none; }
.pf-theme-toggle .ico-sun { display: block; }
body.pf-lite .pf-theme-toggle .ico-sun { display: none; }
body.pf-lite .pf-theme-toggle .ico-moon { display: block; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 10px;
  font-family: var(--font-sans);
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  text-decoration: none !important;
  transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #38BDF8 0%, #818CF8 100%);
  color: #06101E !important;
  border: 0;
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(56, 189, 248, 0.25);
}

.btn-primary:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--card);
  color: var(--ink) !important;
  border: 1px solid var(--line-bright);
}

.btn-secondary:hover {
  border-color: var(--accent);
  background: var(--card-2);
}

.btn-lg {
  padding: 15px 26px;
  font-size: 15.5px;
  border-radius: 12px;
}

/* ── Hero ── */
.pf-hero {
  position: relative;
  overflow: hidden;
  padding: 84px 0 68px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(960px 420px at 18% -10%, rgba(56, 189, 248, 0.18), transparent 60%),
    radial-gradient(840px 380px at 85% 5%, rgba(129, 140, 248, 0.16), transparent 60%),
    radial-gradient(circle at 1px 1px, rgba(148, 163, 184, 0.12) 1px, transparent 0) 0 0 / 28px 28px;
}

.pf-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.pf-eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 10px var(--ok);
}

.pf-hero h1 {
  font-size: clamp(38px, 5.2vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.035em;
  font-weight: 800;
  margin: 0 0 20px;
  max-width: 21ch;
  color: var(--ink);
}

.pf-grad {
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-2) 55%, var(--ok) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.pf-hero .lead {
  font-size: clamp(17px, 1.45vw, 20px);
  line-height: 1.6;
  color: var(--ink-2);
  max-width: 68ch;
  margin: 0 0 28px;
}

.pf-hero .lead code,
p code,
li code,
td code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 2px 7px;
  border-radius: 6px;
  background: var(--card-2);
  border: 1px solid var(--line);
  color: var(--accent);
}

/* CLI command pills */
.pf-cli-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
}

.pf-cmd {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  border-radius: 10px;
  background: var(--code-bg);
  border: 1px solid var(--line-bright);
  font-family: var(--font-mono);
  font-size: 14px;
  color: #F8FAFC;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.pf-cmd:hover {
  border-color: var(--accent);
}

.pf-cmd .prompt {
  color: var(--ok);
  user-select: none;
}

.pf-cmd .copy-tag {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  color: #94A3B8;
  padding: 2px 7px;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.06);
}

.pf-hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

/* Stat strip */
.pf-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 48px;
}

.pf-stat {
  background: var(--card);
  padding: 22px 24px;
}

.pf-stat .num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.15;
}

.pf-stat .num.is-ok { color: var(--ok); }
.pf-stat .num.is-accent { color: var(--accent); }

.pf-stat .lbl {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.45;
}

@media (max-width: 860px) {
  .pf-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .pf-stats { grid-template-columns: 1fr; }
}

/* ── Sections ── */
.pf-section {
  padding: 88px 0;
  border-bottom: 1px solid var(--line);
}

.pf-section.alt {
  background: var(--bg-elev);
}

.pf-sec-head {
  max-width: 760px;
  margin-bottom: 44px;
}

.pf-sec-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.pf-kicker {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin: 0 0 10px;
}

.pf-sec-head h2 {
  font-size: clamp(28px, 3.4vw, 42px);
  line-height: 1.12;
  letter-spacing: -0.025em;
  font-weight: 800;
  margin: 0 0 14px;
  color: var(--ink);
}

.pf-sec-head p {
  margin: 0;
  font-size: 17.5px;
  color: var(--muted);
  line-height: 1.6;
}

/* ── Grids & Cards ── */
.pf-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.pf-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.pf-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

@media (max-width: 960px) {
  .pf-grid-3, .pf-grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .pf-grid-3, .pf-grid-2, .pf-grid-4 { grid-template-columns: minmax(0, 1fr); }
}

.pf-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.pf-card:hover {
  border-color: var(--line-bright);
}

.pf-card .tag-kicker {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.pf-card h3 {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.pf-card p {
  margin: 0;
  font-size: 14.5px;
  color: var(--ink-2);
  line-height: 1.58;
}

/* ── Badges / Chips ── */
.pf-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.pf-badge.ok { background: var(--ok-bg); color: var(--ok); }
.pf-badge.warn { background: var(--warn-bg); color: var(--warn); }
.pf-badge.bad { background: var(--bad-bg); color: var(--bad); }
.pf-badge.info { background: rgba(56, 189, 248, 0.12); color: var(--accent); }

/* ── Interactive Code Showcase (Before / After Tabs) ── */
.pf-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.pf-tab-btn {
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--ink-2);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.pf-tab-btn:hover {
  border-color: var(--line-bright);
  color: var(--ink);
}

.pf-tab-btn.is-active {
  background: rgba(56, 189, 248, 0.14);
  border-color: var(--accent);
  color: var(--accent);
}

.pf-tab-panel {
  display: none;
}

.pf-tab-panel.is-active {
  display: block;
}

.pf-ba-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 860px) {
  .pf-ba-grid { grid-template-columns: 1fr; }
}

.pf-code-box {
  background: var(--code-bg);
  border: 1px solid var(--line-bright);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.pf-code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: #94A3B8;
}

.pf-code-head .status-before { color: #FBBF24; }
.pf-code-head .status-after { color: #34D399; }

.pf-code-box pre {
  margin: 0;
  padding: 18px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
  color: #E2E8F0;
}

.pf-code-box .hl-old {
  background: rgba(251, 191, 36, 0.18);
  color: #FDE68A;
  padding: 1px 4px;
  border-radius: 4px;
}

.pf-code-box .hl-new {
  background: rgba(52, 211, 153, 0.18);
  color: #6EE7B7;
  padding: 1px 4px;
  border-radius: 4px;
}

.pf-code-foot {
  margin-top: 14px;
  padding: 13px 18px;
  border-radius: 10px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--ok);
  font-size: 14px;
  color: var(--ink-2);
}

/* ── Tables ── */
.pf-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--card);
}

.pf-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  min-width: 680px;
}

.pf-table th,
.pf-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.pf-table thead th {
  background: var(--card-2);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.pf-table tbody tr:last-child td,
.pf-table tbody tr:last-child th {
  border-bottom: 0;
}

.pf-table tbody th {
  color: var(--ink);
  font-weight: 600;
}

/* ── Screenshot / Frame ── */
.pf-frame {
  background: var(--card);
  border: 1px solid var(--line-bright);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.pf-frame-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--card-2);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.pf-frame-dots {
  display: flex;
  gap: 6px;
}

.pf-frame-dots i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--line-bright);
  display: inline-block;
}

.pf-frame img {
  display: block;
  width: 100%;
  height: auto;
}

/* ── Footer ── */
.pf-footer {
  padding: 64px 0 40px;
  background: var(--bg-elev);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.pf-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}

@media (max-width: 820px) {
  .pf-footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .pf-footer-grid { grid-template-columns: 1fr; }
}

.pf-footer h4 {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink);
}

.pf-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.pf-footer li {
  margin: 9px 0;
}

.pf-footer a {
  color: var(--muted);
}

.pf-footer a:hover {
  color: var(--ink);
}

.pf-footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--subtle);
}

/* ═══ Flow components (v2) ═══ */
[id] { scroll-margin-top: 92px; }

/* Hero split */
.pf-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
  gap: 44px;
  align-items: center;
}
@media (max-width: 1020px) { .pf-hero-grid { grid-template-columns: 1fr; } }
.pf-hero.split h1 { font-size: clamp(34px, 4.1vw, 56px); max-width: none; }

.pf-term {
  background: var(--code-bg);
  border: 1px solid var(--line-bright);
  border-radius: 12px;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: #E2E8F0;
  margin: 0 0 24px;
  display: grid;
  gap: 6px;
}
.pf-term .row { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.pf-term .p { color: #34D399; user-select: none; }
.pf-term .tag {
  margin-left: auto;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  color: #FBBF24;
  background: rgba(251, 191, 36, 0.12);
  padding: 2px 8px;
  border-radius: 999px;
}
.pf-term .out { color: #94A3B8; padding-left: 20px; }

.pf-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 14px;
}
.pf-trust span::before { content: "✓"; color: var(--ok); margin-right: 7px; font-weight: 800; }

/* Hero demo panel */
.pf-demo {
  background: var(--code-bg);
  border: 1px solid var(--line-bright);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  min-width: 0;
}
.pf-demo-tabs {
  display: flex;
  gap: 2px;
  padding: 8px 8px 0;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  overflow-x: auto;
}
.pf-demo-tabs .pf-tab-btn {
  border: 0;
  border-radius: 8px 8px 0 0;
  background: transparent;
  color: #94A3B8;
  padding: 9px 14px;
  font-size: 13px;
  white-space: nowrap;
}
.pf-demo-tabs .pf-tab-btn:hover { color: #F8FAFC; }
.pf-demo-tabs .pf-tab-btn.is-active { background: var(--code-bg); color: #38BDF8; }
.pf-demo-file {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: #94A3B8;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.pf-demo-file b { color: #34D399; font-weight: 600; }
.pf-diff {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 10px 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12.8px;
  line-height: 1.7;
}
.pf-diff .ln { display: block; padding: 0 16px; white-space: pre; color: #94A3B8; }
.pf-diff .del { background: rgba(248, 113, 113, 0.13); color: #FCA5A5; }
.pf-diff .add { background: rgba(52, 211, 153, 0.13); color: #6EE7B7; }
.pf-demo-foot {
  padding: 10px 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 12.5px;
  color: #94A3B8;
}
.pf-finding-list { padding: 14px 16px; display: grid; gap: 10px; }
.pf-finding-list .f {
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  font-size: 12.8px;
  color: #CBD5E1;
  line-height: 1.5;
}
.pf-finding-list .f b { font-family: var(--font-mono); color: #F8FAFC; margin-right: 8px; }

/* Routes ("What are you trying to do?") */
.pf-route {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  color: inherit;
  text-decoration: none !important;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.pf-route:hover { border-color: var(--accent); transform: translateY(-2px); }
.pf-route .q { font-size: 18px; font-weight: 700; color: var(--ink); letter-spacing: -0.01em; line-height: 1.3; }
.pf-route p { margin: 0; font-size: 14.5px; color: var(--ink-2); line-height: 1.55; }
.pf-route .go { margin-top: auto; padding-top: 6px; font-family: var(--font-mono); font-size: 12.5px; font-weight: 600; color: var(--accent); }

/* Chain / stepper */
.pf-chain { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
@media (max-width: 1020px) { .pf-chain { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .pf-chain { grid-template-columns: 1fr; } }
.pf-step {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.pf-step .n { font-family: var(--font-mono); font-size: 12px; font-weight: 700; color: var(--accent); }
.pf-step h3 { margin: 0; font-size: 18px; color: var(--ink); }
.pf-step p { margin: 0; font-size: 14px; color: var(--ink-2); line-height: 1.55; }
.pf-step .keep {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px dashed var(--line-bright);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}
.pf-note-bar {
  margin-top: 22px;
  padding: 14px 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: 10px;
  font-size: 14.5px;
  color: var(--ink-2);
}

/* Do / Don't */
.pf-dd { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 800px) { .pf-dd { grid-template-columns: 1fr; } }
.pf-dd .col { padding: 28px; border-radius: var(--radius-lg); border: 1px solid var(--line); background: var(--card); }
.pf-dd h3 { margin: 0 0 14px; font-size: 19px; color: var(--ink); }
.pf-dd ul { list-style: none; margin: 0; padding: 0; }
.pf-dd li { position: relative; padding-left: 26px; margin: 11px 0; font-size: 14.8px; color: var(--ink-2); line-height: 1.55; }
.pf-dd li::before { content: "✓"; position: absolute; left: 0; color: var(--ok); font-weight: 800; }
.pf-dd .no li::before { content: "✕"; color: var(--bad); }

/* Status + integration cards */
.pf-status {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.pf-status.live { background: var(--ok-bg); color: var(--ok); }
.pf-status.soon { background: rgba(129, 140, 248, 0.15); color: var(--accent-2); }
.pf-int {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.pf-int.is-soon { border-style: dashed; background: transparent; }
.pf-int .top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.pf-int h3 { margin: 0; font-size: 17px; color: var(--ink); }
.pf-int p { margin: 0; font-size: 14px; color: var(--ink-2); line-height: 1.55; }
.pf-int code.cmd {
  display: block;
  margin-top: auto;
  padding: 9px 12px;
  border-radius: 8px;
  background: var(--code-bg);
  color: #E2E8F0;
  border: 1px solid var(--line-bright);
  font-size: 12.5px;
}
.pf-subhead {
  margin: 36px 0 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.pf-subhead:first-of-type { margin-top: 0; }

/* Pricing tiers */
.pf-tiers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; align-items: stretch; }
@media (max-width: 1080px) { .pf-tiers { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .pf-tiers { grid-template-columns: 1fr; } }
.pf-tiers.three { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 900px) { .pf-tiers.three { grid-template-columns: 1fr; } }
.pf-tier {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px 24px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}
.pf-tier.is-pop { border: 2px solid var(--accent); box-shadow: 0 18px 48px rgba(56, 189, 248, 0.12); }
.pf-tier .flag {
  position: absolute;
  top: -12px;
  right: 20px;
  padding: 4px 11px;
  border-radius: 999px;
  background: linear-gradient(135deg, #38BDF8 0%, #818CF8 100%);
  color: #06101E;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.pf-tier h2, .pf-tier h3 { margin: 0 0 6px; font-size: 22px; font-weight: 800; color: var(--ink); }
.pf-tier .for { margin: 0 0 18px; font-size: 14px; color: var(--ink-2); min-height: 64px; line-height: 1.5; }
.pf-tier .price { display: flex; align-items: baseline; gap: 6px; margin-bottom: 4px; min-height: 38px; }
.pf-tier .amt { font-family: var(--font-mono); font-size: 38px; font-weight: 800; color: var(--ink); line-height: 1; }
.pf-tier .unit { font-size: 14px; color: var(--muted); }
.pf-tier .bill { font-size: 12.5px; color: var(--subtle); margin-bottom: 18px; min-height: 18px; }
.pf-tier .btn { width: 100%; margin-bottom: 22px; }
.pf-tier .lbl {
  margin: 14px 0 8px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
}
.pf-tier .lbl.soon { color: var(--accent-2); }
.pf-list { list-style: none; margin: 0; padding: 0; }
.pf-list li { position: relative; padding-left: 20px; margin: 7px 0; font-size: 13.5px; color: var(--ink-2); line-height: 1.45; }
.pf-list li::before { content: "✓"; position: absolute; left: 0; color: var(--ok); font-weight: 800; }
.pf-list.soon li { color: var(--muted); }
.pf-list.soon li::before { content: "◷"; color: var(--accent-2); }

/* Roadmap */
.pf-road { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 800px) { .pf-road { grid-template-columns: 1fr; } }
.pf-road .col { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px; }
.pf-road h3 { margin: 0 0 4px; font-size: 19px; color: var(--ink); }
.pf-road .sub { margin: 0 0 14px; font-size: 14px; color: var(--muted); }
.pf-road ol { margin: 0; padding-left: 20px; }
.pf-road li { margin: 10px 0; font-size: 14.5px; color: var(--ink-2); line-height: 1.5; }
.pf-road li b { color: var(--ink); }

/* Feature matrix */
.pf-matrix thead th { position: sticky; top: 72px; z-index: 5; }
.pf-matrix .grp th {
  background: rgba(56, 189, 248, 0.08);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 14.5px;
  text-transform: none;
  letter-spacing: 0;
  padding: 14px 18px;
}
.pf-matrix td.c, .pf-matrix th.c { text-align: center; }
.pf-matrix .y { color: var(--ok); font-weight: 800; }
.pf-matrix .n { color: var(--subtle); }
.pf-matrix .s { color: var(--accent-2); font-family: var(--font-mono); font-size: 12px; font-weight: 700; text-transform: uppercase; }
.pf-matrix .feat strong { display: block; color: var(--ink); font-size: 14px; }
.pf-matrix .feat span { display: block; color: var(--muted); font-size: 12.8px; font-weight: 400; line-height: 1.45; }
.pf-legend { display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 18px 0 0; font-size: 13.5px; color: var(--muted); }

/* FAQ */
.pf-faq { max-width: 880px; margin: 0 auto; display: grid; gap: 12px; }
.pf-faq details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.pf-faq summary {
  padding: 18px 22px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.pf-faq summary::-webkit-details-marker { display: none; }
.pf-faq summary::after { content: "+"; font-family: var(--font-mono); font-size: 18px; color: var(--accent); }
.pf-faq details[open] summary::after { content: "−"; }
.pf-faq .ans { padding: 0 22px 18px; color: var(--ink-2); font-size: 14.8px; line-height: 1.65; }

/* Mobile Nav */
.pf-burger {
  display: none;
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--ink);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

@media (max-width: 960px) {
  .pf-nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px;
    gap: 6px;
  }
  .pf-nav-links.is-open {
    display: flex;
  }
  .pf-burger {
    display: inline-flex;
  }
}
@media (max-width: 640px) {
  .pf-nav-actions .btn { display: none; }
}

/* ═══ AI / manager / MigryX footer (v3) ═══ */
.pf-chat { padding: 16px; display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px; font-size: 13.5px; line-height: 1.55; }
.pf-chat .msg { max-width: 94%; padding: 10px 14px; border-radius: 12px; }
.pf-chat .you { justify-self: end; background: rgba(56, 189, 248, 0.16); color: #E0F2FE; border-bottom-right-radius: 4px; }
.pf-chat .tool {
  font-family: var(--font-mono); font-size: 12px; color: #A5B4FC;
  background: rgba(129, 140, 248, 0.12); border: 1px dashed rgba(129, 140, 248, 0.45);
  border-radius: 8px; padding: 8px 12px;
}
.pf-chat .tool b { color: #C7D2FE; }
.pf-chat .ai { background: rgba(255, 255, 255, 0.06); color: #E2E8F0; border-bottom-left-radius: 4px; }
.pf-chat .ai code { background: rgba(255, 255, 255, 0.08); color: #F8FAFC; border: 0; padding: 1px 6px; }
.pf-chat .pf-diff { margin-top: 8px; padding: 6px 0; border-radius: 8px; background: rgba(0, 0, 0, 0.28); font-size: 12px; }

.pf-mgr { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 32px; align-items: start; }
@media (max-width: 900px) { .pf-mgr { grid-template-columns: minmax(0, 1fr); } }
.pf-math .row { display: flex; align-items: baseline; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.pf-math .row:first-child { padding-top: 0; }
.pf-math .big { font-family: var(--font-mono); font-size: 34px; font-weight: 800; color: var(--ink); min-width: 170px; line-height: 1.1; }
.pf-math .big.acc { color: var(--accent); }
.pf-math .big small { font-size: 14px; font-weight: 600; color: var(--muted); }
.pf-math .txt { color: var(--ink-2); font-size: 15px; line-height: 1.5; }
@media (max-width: 520px) { .pf-math .row { flex-direction: column; gap: 4px; } }
.pf-qa { margin: 22px 0 0; padding: 0; list-style: none; }
.pf-qa li { margin: 12px 0; font-size: 14.5px; color: var(--ink-2); line-height: 1.55; }
.pf-qa li b { display: block; color: var(--ink); }
.pf-note { background: var(--card); border: 1px solid var(--line-bright); border-radius: var(--radius-lg); overflow: hidden; }
.pf-note .bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--line); font-family: var(--font-mono); font-size: 12px; color: var(--muted); }
.pf-note .acts { display: flex; gap: 8px; flex-wrap: wrap; }
.pf-note .acts .btn { padding: 8px 14px; font-size: 13px; }
.pf-note pre { margin: 0; padding: 18px 20px; white-space: pre-wrap; word-break: break-word; font-family: var(--font-sans); font-size: 14px; line-height: 1.65; color: var(--ink-2); }

.pf-by { display: flex; align-items: center; gap: 12px 22px; flex-wrap: wrap; padding: 22px 0; margin-bottom: 24px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pf-by img { height: 26px; width: auto; display: block; }
.pf-by .by-light { display: none; }
body.pf-lite .pf-by .by-light { display: block; }
body.pf-lite .pf-by .by-dark { display: none; }
.pf-by .lbl { font-family: var(--font-mono); font-size: 11.5px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink); }
.pf-by p { margin: 0; flex: 1; min-width: 260px; color: var(--muted); font-size: 14px; line-height: 1.55; }
.pf-by a { color: var(--accent); font-weight: 600; }

.pf-tools { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
@media (max-width: 520px) { .pf-tools { grid-template-columns: minmax(0, 1fr); } }

.pf-chat .pf-diff .ln { white-space: pre-wrap; word-break: break-word; }

.pf-by { border-bottom: 0; margin-bottom: 0; }

.pf-chain.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1020px) { .pf-chain.four { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .pf-chain.four { grid-template-columns: minmax(0, 1fr); } }

.pf-footer-grid.three { grid-template-columns: 2fr 1fr 1fr; }
@media (max-width: 820px) { .pf-footer-grid.three { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .pf-footer-grid.three { grid-template-columns: 1fr; } }

/* ═══ Directory / Cross-File Intelligence (v4) ═══ */
.pf-dir-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 28px;
  align-items: start;
}
@media (max-width: 980px) { .pf-dir-grid { grid-template-columns: minmax(0, 1fr); } }

.pf-dir-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}
@media (max-width: 720px) { .pf-dir-stats { grid-template-columns: minmax(0, 1fr); } }
.pf-dir-stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
}
.pf-dir-stat .big {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.1;
  margin-bottom: 6px;
}
.pf-dir-stat .big.ok { color: var(--ok); }
.pf-dir-stat p { margin: 0; font-size: 14px; color: var(--ink-2); line-height: 1.5; }

.pf-trace-box {
  background: var(--code-bg);
  border: 1px solid var(--line-bright);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.pf-trace-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: #94A3B8;
}
.pf-trace-head b { color: #38BDF8; font-weight: 700; }
.pf-trace-body { padding: 18px; display: grid; gap: 14px; }
.pf-trace-step {
  padding: 12px 14px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--font-mono);
  font-size: 12.6px;
  line-height: 1.65;
  color: #E2E8F0;
}
.pf-trace-step .f-name {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #94A3B8;
  font-size: 11.5px;
  margin-bottom: 4px;
}
.pf-trace-step .f-name span.role { color: #A5B4FC; }
.pf-trace-resolve {
  padding: 14px 16px;
  border-radius: 10px;
  background: rgba(52, 211, 153, 0.11);
  border: 1px solid rgba(52, 211, 153, 0.38);
  font-size: 13.5px;
  line-height: 1.55;
  color: #D1FAE5;
}
.pf-trace-resolve b { color: #34D399; font-family: var(--font-mono); }

.pf-stage-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
  display: grid;
  gap: 14px;
}
.pf-stage-card h3 { margin: 0; font-size: 18px; color: var(--ink); }
.pf-stage-card > p { margin: 0; font-size: 14.5px; color: var(--ink-2); line-height: 1.55; }
.pf-stages { display: grid; gap: 10px; }
.pf-stage-row {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12.5px;
}
.pf-stage-row .st-lbl { color: var(--accent); font-weight: 700; }
.pf-stage-row .st-jobs { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; color: var(--ink); }
.pf-stage-row .pill {
  padding: 3px 9px;
  border-radius: 6px;
  background: var(--card);
  border: 1px solid var(--line-bright);
  font-size: 12px;
  color: var(--ink);
}
.pf-stage-row .pill.lib { color: var(--muted); border-style: dashed; }
.pf-stage-row .meta { color: var(--muted); font-family: var(--font-sans); font-size: 12px; margin-left: auto; }

/* ═══ Launch Announcement Ribbon ═══ */
.pf-launch-bar {
  position: relative;
  z-index: 101;
  background: linear-gradient(90deg, #0EA5E9 0%, #6366F1 50%, #10B981 100%);
  color: #FFFFFF;
  text-align: center;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  box-shadow: 0 4px 20px rgba(14, 165, 233, 0.28);
}
.pf-launch-bar .wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px 14px;
  flex-wrap: wrap;
}
.pf-launch-bar .pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 3px 11px;
  border-radius: 999px;
  background: rgba(7, 10, 18, 0.32);
  border: 1px solid rgba(255, 255, 255, 0.38);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #FEF08A;
}
.pf-launch-bar .pill .pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #FDE047;
  box-shadow: 0 0 10px #FDE047;
}
.pf-launch-bar strong {
  color: #FFFFFF;
  font-weight: 800;
}
.pf-launch-bar a {
  color: #FEF08A !important;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.pf-launch-bar a:hover {
  color: #FFFFFF !important;
}