/* ============================================================
   RegFin Design System — Tokens
   The single source of truth for color, type, spacing, motion.
   ============================================================ */

:root {
  /* ---------- BRAND CORE ---------- */
  --rf-cyan-300:    #67e8f9;
  --rf-cyan-400:    #22d3ee;
  --rf-cyan-500:    #06b6d4;
  --rf-cyan-600:    #0891b2;
  --rf-blue-400:    #60a5fa;
  --rf-blue-500:    #3b82f6;
  --rf-blue-600:    #2563eb;
  --rf-blue-700:    #1d4ed8;
  --rf-blue-900:    #1e3a8a;

  --rf-glow-cyan:   #09fbf7;
  --rf-glow-blue:   #167aee;

  /* ---------- NEUTRALS ---------- */
  --rf-ink-950:     #020617;
  --rf-ink-900:     #0f172a;
  --rf-ink-850:     #131c30;
  --rf-ink-800:     #1e293b;
  --rf-ink-700:     #334155;
  --rf-ink-600:     #475569;
  --rf-ink-500:     #64748b;
  --rf-ink-400:     #94a3b8;
  --rf-ink-300:     #cbd5e1;
  --rf-ink-200:     #e2e8f0;
  --rf-ink-100:     #f1f5f9;
  --rf-ink-50:      #f8fafc;
  --rf-white:       #ffffff;

  --rf-line-faint:  rgba(255,255,255,0.06);
  --rf-line:        rgba(255,255,255,0.10);
  --rf-line-strong: rgba(255,255,255,0.16);
  --rf-line-glow:   rgba(9,251,247,0.18);

  /* ---------- SEMANTIC ---------- */
  --rf-positive:    #10b981;
  --rf-positive-bg: rgba(16,185,129,0.12);
  --rf-warning:     #f59e0b;
  --rf-warning-bg:  rgba(245,158,11,0.12);
  --rf-critical:    #ef4444;
  --rf-critical-bg: rgba(239,68,68,0.12);
  --rf-info:        var(--rf-cyan-500);
  --rf-info-bg:     rgba(6,182,212,0.12);

  /* ---------- TYPOGRAPHY ---------- */
  --rf-font-display: 'Space Grotesk', 'Satoshi', system-ui, sans-serif;
  --rf-font-body:    'Inter', system-ui, -apple-system, sans-serif;
  --rf-font-mono:    'JetBrains Mono', ui-monospace, 'SF Mono', monospace;

  --rf-text-xs:     0.75rem;
  --rf-text-sm:     0.875rem;
  --rf-text-base:   1rem;
  --rf-text-lg:     1.125rem;
  --rf-text-xl:     1.375rem;
  --rf-text-2xl:    1.75rem;
  --rf-text-3xl:    2.25rem;
  --rf-text-4xl:    3rem;
  --rf-text-5xl:    3.75rem;
  --rf-text-6xl:    4.75rem;

  --rf-leading-tight: 1.1;
  --rf-leading-snug:  1.3;
  --rf-leading-body:  1.55;
  --rf-leading-prose: 1.7;

  --rf-track-tight: -0.025em;
  --rf-track-snug:  -0.015em;
  --rf-track-wide:   0.08em;

  /* ---------- SPACING ---------- */
  --rf-s-1:  4px;
  --rf-s-2:  8px;
  --rf-s-3:  12px;
  --rf-s-4:  16px;
  --rf-s-5:  20px;
  --rf-s-6:  24px;
  --rf-s-8:  32px;
  --rf-s-10: 40px;
  --rf-s-12: 48px;
  --rf-s-16: 64px;
  --rf-s-20: 80px;
  --rf-s-24: 96px;
  --rf-s-32: 128px;

  /* ---------- RADIUS ---------- */
  --rf-r-sm:   6px;
  --rf-r-md:   10px;
  --rf-r-lg:   14px;
  --rf-r-xl:   20px;
  --rf-r-2xl:  28px;
  --rf-r-pill: 999px;

  /* ---------- SHADOWS ---------- */
  --rf-lift-sm: 0 1px 2px rgba(2,6,23,0.08), 0 1px 1px rgba(2,6,23,0.04);
  --rf-lift-md: 0 4px 12px rgba(2,6,23,0.10), 0 2px 4px rgba(2,6,23,0.06);
  --rf-lift-lg: 0 16px 40px rgba(2,6,23,0.18), 0 4px 8px rgba(2,6,23,0.08);
  --rf-lift-xl: 0 32px 80px rgba(2,6,23,0.28), 0 8px 16px rgba(2,6,23,0.12);

  --rf-glow-sm: 0 0 0 1px rgba(9,251,247,0.15), 0 4px 16px rgba(6,182,212,0.18);
  --rf-glow-md: 0 0 0 1px rgba(9,251,247,0.20), 0 8px 32px rgba(6,182,212,0.30);
  --rf-glow-lg: 0 0 60px rgba(9,251,247,0.25), 0 0 120px rgba(22,122,238,0.18);

  /* ---------- GRADIENTS ---------- */
  --rf-grad-fin:     linear-gradient(135deg, var(--rf-cyan-400) 0%, var(--rf-blue-600) 100%);
  --rf-grad-tide:    linear-gradient(180deg, var(--rf-cyan-300) 0%, var(--rf-blue-700) 100%);
  --rf-grad-text:    linear-gradient(135deg, #ffffff 0%, var(--rf-glow-cyan) 50%, var(--rf-glow-blue) 100%);
  --rf-grad-cta:     linear-gradient(90deg, var(--rf-cyan-500) 0%, var(--rf-blue-500) 100%);
  --rf-grad-deep:    radial-gradient(ellipse at top, #1e293b 0%, var(--rf-ink-950) 60%);
  --rf-grad-mesh:
    radial-gradient(at 20% 0%, rgba(6,182,212,0.18) 0px, transparent 50%),
    radial-gradient(at 80% 100%, rgba(59,130,246,0.18) 0px, transparent 50%),
    radial-gradient(at 50% 50%, rgba(9,251,247,0.06) 0px, transparent 60%);
  --rf-grad-divider: linear-gradient(90deg, transparent, var(--rf-glow-cyan), var(--rf-glow-blue), transparent);

  /* ---------- MOTION ---------- */
  --rf-ease:         cubic-bezier(0.4, 0, 0.2, 1);
  --rf-ease-out:     cubic-bezier(0.2, 0.7, 0.2, 1);
  --rf-ease-spring:  cubic-bezier(0.34, 1.56, 0.64, 1);
  --rf-dur-fast:     150ms;
  --rf-dur-base:     250ms;
  --rf-dur-slow:     400ms;

  /* ---------- LAYOUT ---------- */
  --rf-container:    1400px;
  --rf-container-narrow: 960px;
  --rf-prose:        65ch;
}

/* ============================================================
   Base reset
   ============================================================ */
html { -webkit-text-size-adjust: 100%; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  margin: 0;
  font-family: var(--rf-font-body);
  font-size: var(--rf-text-base);
  line-height: var(--rf-leading-body);
  color: var(--rf-ink-200);
  background: var(--rf-ink-950);
  font-feature-settings: 'cv02', 'cv11', 'ss01';
}

* { box-sizing: border-box; }
h1, h2, h3, h4, h5, h6 {
  font-family: var(--rf-font-display);
  font-weight: 600;
  letter-spacing: var(--rf-track-tight);
  margin: 0;
  text-wrap: balance;
}
p { margin: 0; text-wrap: pretty; }
code, kbd, samp { font-family: var(--rf-font-mono); }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; }

.rf-grad-text {
  background: var(--rf-grad-text);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.rf-grad-cta-text {
  background: var(--rf-grad-cta);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* ============================================================
   Navigation
   ============================================================ */
.rf-nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 40px;
  background: rgba(2,6,23,0.72);
  backdrop-filter: saturate(140%) blur(16px);
  -webkit-backdrop-filter: saturate(140%) blur(16px);
  border-bottom: 1px solid var(--rf-line-faint);
}
.rf-nav-brand { display: flex; align-items: center; gap: 12px; }
.rf-nav-brand img { height: 34px; }
.rf-nav-links {
  display: flex; gap: 36px; list-style: none; padding: 0; margin: 0;
}
.rf-nav-links a {
  color: var(--rf-ink-300); font-size: 14px; font-weight: 500;
  letter-spacing: -0.005em;
  transition: color var(--rf-dur-base) var(--rf-ease);
}
.rf-nav-links a:hover, .rf-nav-links a.active { color: var(--rf-white); }
.rf-nav-cta { display: flex; gap: 10px; align-items: center; }
.rf-nav-right { display: none; align-items: center; gap: 10px; }
.rf-nav-demo-mobile { display: none; }

/* Mobile nav toggle */
.rf-nav-toggle {
  display: none;
  background: none; border: none; color: var(--rf-ink-300);
  padding: 8px; cursor: pointer;
}
.rf-nav-toggle svg { width: 24px; height: 24px; }

.rf-mobile-menu {
  display: flex;
  position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: 100;
  background: rgba(2,6,23,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 80px 24px 24px;
  flex-direction: column; gap: 8px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  visibility: hidden;
  opacity: 0;
  transition: opacity var(--rf-dur-slow) var(--rf-ease), visibility 0s linear var(--rf-dur-slow);
}
.rf-mobile-menu.open {
  visibility: visible;
  opacity: 1;
  transition: opacity var(--rf-dur-slow) var(--rf-ease), visibility 0s linear 0s;
}
.rf-mobile-menu a {
  color: var(--rf-ink-200); font-size: 18px; font-weight: 500;
  padding: 14px 0; border-bottom: 1px solid var(--rf-line-faint);
  opacity: 0;
  transform: translateX(20px);
  transition: opacity 0.15s var(--rf-ease), transform 0.15s var(--rf-ease), color var(--rf-dur-base) var(--rf-ease);
}
.rf-mobile-menu.open a {
  opacity: 1;
  transform: translateX(0);
  transition: opacity 0.35s var(--rf-ease-out), transform 0.35s var(--rf-ease-out), color var(--rf-dur-base) var(--rf-ease);
  transition-delay: calc(var(--i, 0) * 30ms + 120ms);
}
.rf-mobile-menu a:hover { color: var(--rf-white); }
.rf-mobile-close {
  position: absolute; top: 18px; right: 20px;
  background: none; border: none; color: var(--rf-ink-300);
  font-size: 28px; cursor: pointer;
  opacity: 0;
  transform: rotate(-90deg) scale(0.8);
  transition: opacity var(--rf-dur-base) var(--rf-ease), transform var(--rf-dur-base) var(--rf-ease-spring), color var(--rf-dur-fast) var(--rf-ease);
}
.rf-mobile-menu.open .rf-mobile-close {
  opacity: 1;
  transform: rotate(0) scale(1);
  transition-delay: 60ms;
}
.rf-mobile-close:hover { color: var(--rf-white); }

/* ============================================================
   Buttons
   ============================================================ */
.rf-btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  font-family: var(--rf-font-body); font-weight: 600; font-size: 14px;
  letter-spacing: -0.005em;
  border-radius: var(--rf-r-md);
  border: 1px solid transparent;
  padding: 10px 18px; line-height: 1;
  transition: all var(--rf-dur-base) var(--rf-ease);
  text-decoration: none;
  white-space: nowrap;
}
.rf-btn-lg { padding: 16px 26px; font-size: 15px; border-radius: 12px; }
.rf-btn-xl { padding: 18px 28px; font-size: 16px; border-radius: 12px; }

/* Solid primary (blue-600 fin color) */
.rf-btn-primary {
  background: var(--rf-blue-600);
  color: var(--rf-white);
  border: 1px solid var(--rf-blue-600);
  box-shadow: none;
}
.rf-btn-primary:hover {
  background: var(--rf-blue-500);
  border-color: var(--rf-blue-500);
  color: var(--rf-white);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px -8px rgba(37,99,235,0.55);
  filter: none;
}
.rf-btn-primary:active {
  background: var(--rf-blue-700);
  border-color: var(--rf-blue-700);
  transform: translateY(0);
}

/* Secondary: solid dark surface */
.rf-btn-secondary {
  background: var(--rf-ink-850);
  color: var(--rf-white);
  border: 1px solid var(--rf-line-strong);
}
.rf-btn-secondary:hover {
  background: var(--rf-ink-800);
  border-color: var(--rf-cyan-500);
  color: var(--rf-white);
}

.rf-btn-ghost {
  background: transparent; color: var(--rf-ink-300); padding: 10px 14px;
}
.rf-btn-ghost:hover { color: var(--rf-white); }

.rf-btn .arrow { display: inline-block; transition: transform var(--rf-dur-base) var(--rf-ease); }
.rf-btn:hover .arrow { transform: translateX(3px); }

/* ============================================================
   Eyebrow
   ============================================================ */
.rf-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px;
  border-radius: var(--rf-r-pill);
  border: 1px solid rgba(6,182,212,0.30);
  background: rgba(6,182,212,0.08);
  font-family: var(--rf-font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: var(--rf-track-wide);
  color: var(--rf-cyan-400); font-weight: 600;
}
.rf-eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--rf-cyan-400);
  box-shadow: 0 0 8px var(--rf-glow-cyan);
}
.rf-eyebrow.alt {
  border-color: rgba(96,165,250,0.30);
  background: rgba(59,130,246,0.08);
  color: var(--rf-blue-400);
}
.rf-eyebrow.alt .dot { background: var(--rf-blue-400); box-shadow: 0 0 8px var(--rf-blue-400); }

/* ============================================================
   Section frame
   ============================================================ */
.rf-section { padding: 96px 40px; position: relative; }
.rf-section-tight { padding: 64px 40px; }
.rf-section-inner { max-width: 1280px; margin: 0 auto; position: relative; }
.rf-section-inner-narrow { max-width: 1040px; margin: 0 auto; position: relative; }

.rf-section-head { text-align: center; max-width: 720px; margin: 0 auto 64px; }
.rf-h2 {
  font-family: var(--rf-font-display);
  font-size: clamp(36px, 4.6vw, 56px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.05;
  color: var(--rf-white);
  margin: 16px 0 18px;
}
.rf-h2 .grad {
  background: var(--rf-grad-text);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.rf-section-sub {
  font-size: 18px; color: var(--rf-ink-400); line-height: 1.55;
}

/* ============================================================
   Hero
   ============================================================ */
.rf-hero {
  position: relative;
  padding: 112px 40px 96px;
  background: var(--rf-ink-950);
  background-image: var(--rf-grad-mesh);
  overflow: hidden;
}
.rf-hero::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(circle at 50% -10%, rgba(9,251,247,0.10), transparent 50%),
    radial-gradient(circle at 90% 110%, rgba(22,122,238,0.10), transparent 50%);
}
.rf-hero::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px;
  background: var(--rf-grad-divider); opacity: 0.4;
}
.rf-hero-grid {
  position: relative; max-width: 1280px; margin: 0 auto;
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 72px; align-items: center;
}
.rf-hero h1 {
  font-family: var(--rf-font-display); font-weight: 600;
  font-size: clamp(44px, 5.4vw, 76px);
  line-height: 1.02; letter-spacing: -0.035em;
  color: var(--rf-white);
  margin: 22px 0 22px;
  text-wrap: balance;
}
.rf-hero h1 .grad {
  background: var(--rf-grad-text);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.rf-hero-sub {
  font-size: 19px; color: var(--rf-ink-300);
  line-height: 1.55; max-width: 56ch;
  margin: 0 0 36px;
}
.rf-hero-cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

.rf-hero-meta {
  margin-top: 40px;
  display: flex; gap: 28px; flex-wrap: wrap; align-items: center;
  font-family: var(--rf-font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: var(--rf-track-wide);
  color: var(--rf-ink-500);
}
.rf-hero-meta .item { display: inline-flex; align-items: center; gap: 8px; }
.rf-hero-meta .item .pdot { width: 6px; height: 6px; border-radius: 50%; background: var(--rf-positive); box-shadow: 0 0 6px var(--rf-positive); }

/* Feature page hero */
.rf-feat-hero {
  padding: 96px 40px 72px; position: relative; overflow: hidden;
}
.rf-feat-hero::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(circle at 30% 20%, rgba(37,99,235,0.14), transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(6,182,212,0.10), transparent 50%);
}
.rf-feat-hero-inner { position: relative; max-width: 1280px; margin: 0 auto; }
.rf-feat-hero h1 {
  font-family: var(--rf-font-display); font-weight: 600;
  font-size: clamp(44px, 5.4vw, 72px); letter-spacing: -0.032em; line-height: 1.04;
  color: var(--rf-white); margin: 20px 0 18px; text-wrap: balance; max-width: 20ch;
}
.rf-feat-hero h1 .grad { background: var(--rf-grad-text); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.rf-feat-hero .rf-hero-sub { max-width: 60ch; }
.rf-feat-hero .rf-hero-meta { margin-top: 28px; }

/* ============================================================
   Browser frame / product mock
   ============================================================ */
.rf-browser {
  border: 1px solid var(--rf-line);
  border-radius: var(--rf-r-xl);
  overflow: hidden;
  background: var(--rf-ink-900);
  box-shadow: var(--rf-lift-xl), 0 0 80px rgba(6,182,212,0.12);
}
.rf-browser-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 11px 14px;
  background: var(--rf-ink-850);
  border-bottom: 1px solid var(--rf-line);
}
.rf-bdot { width: 11px; height: 11px; border-radius: 50%; }
.rf-bdot.r { background: #ef4444aa; }
.rf-bdot.y { background: #f59e0baa; }
.rf-bdot.g { background: #10b981aa; }
.rf-burl {
  flex: 1; margin-left: 14px;
  padding: 5px 14px;
  background: var(--rf-ink-900);
  border: 1px solid var(--rf-line-faint);
  border-radius: var(--rf-r-sm);
  font-family: var(--rf-font-mono); font-size: 11px;
  color: var(--rf-ink-400);
  display: flex; align-items: center; gap: 8px;
}
.rf-burl::before {
  content: ''; width: 8px; height: 8px; border-radius: 2px;
  background: var(--rf-positive); box-shadow: 0 0 6px var(--rf-positive);
}
.rf-browser-body {
  background: var(--rf-ink-900);
  padding: 24px;
  background-image: radial-gradient(at 90% 0%, rgba(6,182,212,0.06), transparent 50%);
}

/* ============================================================
   Feature cards
   ============================================================ */
.rf-card {
  background: var(--rf-ink-900);
  border: 1px solid var(--rf-line-faint);
  border-radius: var(--rf-r-xl);
  padding: 28px;
  transition: all var(--rf-dur-base) var(--rf-ease);
}
.rf-card:hover {
  transform: translateY(-3px);
  border-color: var(--rf-line-glow);
  box-shadow: var(--rf-glow-sm);
}
.rf-card-ico {
  width: 44px; height: 44px;
  border-radius: var(--rf-r-md);
  background: linear-gradient(135deg, rgba(6,182,212,0.15), rgba(59,130,246,0.15));
  border: 1px solid rgba(6,182,212,0.25);
  color: var(--rf-cyan-400);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
  font-family: var(--rf-font-mono); font-size: 18px; font-weight: 600;
}
.rf-card h3 {
  font-family: var(--rf-font-display); font-size: 20px;
  color: var(--rf-white); font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0 0 10px;
}
.rf-card p {
  color: var(--rf-ink-400); font-size: 15px; line-height: 1.6;
}

/* ============================================================
   Stat row
   ============================================================ */
.rf-stat-num {
  font-family: var(--rf-font-display);
  font-weight: 600;
  font-size: 44px;
  letter-spacing: -0.02em;
  color: var(--rf-white);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.rf-stat-num .accent { color: var(--rf-cyan-400); }
.rf-stat-label {
  margin-top: 10px;
  font-family: var(--rf-font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: var(--rf-track-wide);
  color: var(--rf-ink-500);
}

/* ============================================================
   Badge
   ============================================================ */
.rf-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 10px; border-radius: var(--rf-r-pill);
  font-family: var(--rf-font-body); font-size: 11px; font-weight: 600;
}
.rf-badge .d { width: 5px; height: 5px; border-radius: 50%; background: currentColor; }
.rf-badge.ok   { background: var(--rf-positive-bg); color: var(--rf-positive); }
.rf-badge.warn { background: var(--rf-warning-bg);  color: var(--rf-warning);  }
.rf-badge.crit { background: var(--rf-critical-bg); color: var(--rf-critical); }
.rf-badge.info { background: var(--rf-info-bg);     color: var(--rf-cyan-400); }

/* ============================================================
   Citation
   ============================================================ */
.rf-cite {
  font-family: var(--rf-font-mono); color: var(--rf-cyan-400);
  font-size: 12px;
}

/* ============================================================
   Mock internals (reusable)
   ============================================================ */
.mock-row { display: flex; align-items: center; padding: 11px 12px; border-radius: 10px; transition: background var(--rf-dur-fast) var(--rf-ease); }
.mock-row:hover { background: rgba(255,255,255,0.03); }
.mock-row + .mock-row { border-top: 1px solid var(--rf-line-faint); }

/* ============================================================
   Divider
   ============================================================ */
.rf-divider {
  height: 1px;
  background: var(--rf-grad-divider);
  opacity: 0.4;
}

/* ============================================================
   Form inputs
   ============================================================ */
.rf-input, .rf-select, .rf-textarea {
  width: 100%;
  background: var(--rf-ink-900);
  border: 1px solid var(--rf-line);
  border-radius: var(--rf-r-md);
  padding: 12px 14px;
  font-family: var(--rf-font-body); font-size: 15px;
  color: var(--rf-white);
  transition: all var(--rf-dur-base) var(--rf-ease);
}
.rf-input::placeholder, .rf-textarea::placeholder { color: var(--rf-ink-600); }
.rf-input:focus, .rf-select:focus, .rf-textarea:focus {
  outline: none;
  border-color: var(--rf-cyan-500);
  box-shadow: 0 0 0 3px rgba(6,182,212,0.18);
}
.rf-label {
  display: block;
  font-family: var(--rf-font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: var(--rf-track-wide);
  color: var(--rf-ink-400); font-weight: 600;
  margin-bottom: 8px;
}

/* ============================================================
   Big split feature
   ============================================================ */
.big-split {
  display: grid; grid-template-columns: 1fr 1.05fr; gap: 64px; align-items: center;
}
.big-split.reverse { grid-template-columns: 1.05fr 1fr; }
.bs-eyebrow {
  font-family: var(--rf-font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: var(--rf-track-wide);
  color: var(--rf-cyan-400); font-weight: 600;
}
.bs-h {
  font-family: var(--rf-font-display); font-weight: 600;
  font-size: clamp(30px, 3.4vw, 46px);
  color: var(--rf-white); letter-spacing: -0.025em; line-height: 1.08;
  margin: 14px 0 18px; text-wrap: balance;
}
.bs-p { color: var(--rf-ink-300); font-size: 17px; line-height: 1.6; margin: 0 0 28px; max-width: 50ch; }
.bs-list { list-style: none; padding: 0; margin: 0 0 28px; display: flex; flex-direction: column; gap: 14px; }
.bs-list li { display: flex; gap: 12px; align-items: flex-start; color: var(--rf-ink-200); font-size: 15px; line-height: 1.5; }
.bs-list .check {
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--rf-positive-bg); color: var(--rf-positive);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; flex-shrink: 0; margin-top: 1px;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq-grid { display: grid; grid-template-columns: 1fr; gap: 0; }
.faq-item { border-top: 1px solid var(--rf-line); }
.faq-item:last-child { border-bottom: 1px solid var(--rf-line); }
.faq-q {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 0; cursor: pointer;
  font-family: var(--rf-font-display); color: var(--rf-white);
  font-weight: 600; font-size: 17px;
  list-style: none;
}
.faq-q::after {
  content: '+'; color: var(--rf-cyan-400);
  font-family: var(--rf-font-mono); font-size: 18px;
  transition: transform var(--rf-dur-base) var(--rf-ease);
}
.faq-item.open .faq-q::after { content: '−'; }
.faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height var(--rf-dur-slow) var(--rf-ease), padding var(--rf-dur-slow) var(--rf-ease);
  color: var(--rf-ink-300); font-size: 15px; line-height: 1.6;
}
.faq-item.open .faq-a { max-height: 300px; padding-bottom: 18px; }

/* ============================================================
   CTA strip
   ============================================================ */
.rf-cta-strip {
  padding: 96px 40px; text-align: center;
  background: var(--rf-grad-deep); position: relative; overflow: hidden;
}
.rf-cta-strip::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 50% 100%, rgba(9,251,247,0.15), transparent 50%),
    radial-gradient(circle at 50% 0%, rgba(22,122,238,0.10), transparent 50%);
}
.rf-cta-h {
  font-family: var(--rf-font-display); font-size: clamp(36px, 4.8vw, 64px);
  font-weight: 600; color: var(--rf-white);
  letter-spacing: -0.03em; line-height: 1.05;
  margin: 0 0 18px; position: relative;
}
.rf-cta-h .grad {
  background: var(--rf-grad-text);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.rf-cta-sub {
  color: var(--rf-ink-300); font-size: 18px;
  margin: 0 auto 36px; position: relative;
  max-width: 56ch; line-height: 1.55;
}
.rf-cta-row { display: inline-flex; gap: 12px; position: relative; }

/* Final CTA card (for feature pages) */
.final-cta { padding: 64px 40px 96px; }
.final-cta-card {
  max-width: 920px; margin: 0 auto;
  border-radius: var(--rf-r-2xl);
  border: 1px solid rgba(37,99,235,0.30);
  background: radial-gradient(circle at 50% 0%, rgba(37,99,235,0.20), transparent 60%), var(--rf-ink-900);
  padding: 56px 48px;
  text-align: center; position: relative; overflow: hidden;
  box-shadow: 0 0 80px rgba(37,99,235,0.12);
}
.final-cta-card::before { content: ''; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: var(--rf-grad-divider); opacity: 0.6; }
.final-cta h2 { font-family: var(--rf-font-display); font-weight: 600; font-size: clamp(32px, 4vw, 44px); letter-spacing: -0.025em; color: var(--rf-white); margin: 14px 0; text-wrap: balance; }
.final-cta h2 .grad { background: var(--rf-grad-text); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.final-cta p { color: var(--rf-ink-300); font-size: 16px; max-width: 56ch; margin: 0 auto 28px; line-height: 1.55; }

/* ============================================================
   Footer
   ============================================================ */
.rf-footer { padding: 80px 40px 40px; background: var(--rf-ink-950); border-top: 1px solid var(--rf-line); }
.rf-footer-inner { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 48px; }
.rf-footer-col h6 {
  font-family: var(--rf-font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: var(--rf-track-wide);
  color: var(--rf-ink-500); margin: 0 0 16px; font-weight: 600;
}
.rf-footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.rf-footer-col li { color: var(--rf-ink-300); font-size: 14px; }
.rf-footer-col a { color: var(--rf-ink-300); font-size: 14px; transition: color var(--rf-dur-base) var(--rf-ease); }
.rf-footer-col a:hover { color: var(--rf-cyan-400); }
.rf-footer-col .rf-footer-sub-heading {
  font-family: var(--rf-font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: var(--rf-track-wide);
  color: var(--rf-ink-500); margin: 24px 0 0; padding-top: 16px; font-weight: 600;
  border-top: 1px solid var(--rf-line-faint);
}
.rf-footer-brand img { height: 34px; margin-bottom: 18px; }
.rf-footer-brand p { color: var(--rf-ink-400); font-size: 14px; max-width: 32ch; line-height: 1.6; margin: 0; }
.rf-footer-bottom {
  max-width: 1280px; margin: 56px auto 0;
  padding-top: 24px; border-top: 1px solid var(--rf-line-faint);
  display: flex; justify-content: space-between; align-items: center;
  color: var(--rf-ink-500); font-size: 12px; font-family: var(--rf-font-mono);
}

/* ============================================================
   Capability grid (feature pages)
   ============================================================ */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.cap-card {
  background: var(--rf-ink-900);
  border: 1px solid var(--rf-line-faint);
  border-radius: var(--rf-r-xl);
  padding: 24px;
  transition: border-color var(--rf-dur-base) var(--rf-ease);
}
.cap-card:hover { border-color: var(--rf-line-glow); }
.cap-card h4 {
  font-family: var(--rf-font-display); font-size: 17px; color: var(--rf-white);
  font-weight: 600; letter-spacing: -0.01em; margin: 0 0 8px;
}
.cap-card p { color: var(--rf-ink-400); font-size: 14px; line-height: 1.55; margin: 0; }
.cap-card .num {
  font-family: var(--rf-font-mono); font-size: 11px; color: var(--rf-cyan-400);
  text-transform: uppercase; letter-spacing: var(--rf-track-wide);
  font-weight: 600; margin-bottom: 12px;
}

/* ============================================================
   Before/after split
   ============================================================ */
.ba-split { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.ba-col { padding: 28px; border-radius: var(--rf-r-xl); }
.ba-col.before { background: rgba(239,68,68,0.06); border: 1px solid rgba(239,68,68,0.18); }
.ba-col.after { background: rgba(16,185,129,0.06); border: 1px solid rgba(16,185,129,0.18); }
.ba-col h4 {
  font-family: var(--rf-font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: var(--rf-track-wide);
  font-weight: 600; margin-bottom: 16px;
}
.ba-col.before h4 { color: var(--rf-critical); }
.ba-col.after h4 { color: var(--rf-positive); }
.ba-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 12px; }
.ba-col li { color: var(--rf-ink-300); font-size: 14px; line-height: 1.5; display: flex; gap: 10px; align-items: flex-start; }
.ba-col.before li::before { content: '✕'; color: var(--rf-critical); font-size: 12px; flex-shrink: 0; margin-top: 2px; }
.ba-col.after li::before { content: '✓'; color: var(--rf-positive); font-size: 12px; flex-shrink: 0; margin-top: 2px; }

/* ============================================================
   Animations — scroll reveal & hero entrance
   ============================================================ */
@keyframes rf-hero-in {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.rf-hero-grid > *              { animation: rf-hero-in 0.7s var(--rf-ease-out) both; }
.rf-hero-grid > *:nth-child(1) { animation-delay: 0.1s; }
.rf-hero-grid > *:nth-child(2) { animation-delay: 0.3s; }

.rf-feat-hero-inner > *              { animation: rf-hero-in 0.6s var(--rf-ease-out) both; }
.rf-feat-hero-inner > *:nth-child(1) { animation-delay: 0.08s; }
.rf-feat-hero-inner > *:nth-child(2) { animation-delay: 0.18s; }
.rf-feat-hero-inner > *:nth-child(3) { animation-delay: 0.28s; }
.rf-feat-hero-inner > *:nth-child(4) { animation-delay: 0.36s; }

.rf-reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--rf-ease-out), transform 0.6s var(--rf-ease-out);
}
.rf-reveal.rf-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .rf-reveal,
  .rf-hero-grid > *,
  .rf-feat-hero-inner > *,
  .rf-mobile-menu,
  .rf-mobile-menu a,
  .rf-mobile-close {
    animation: none !important;
    transition-duration: 0s !important;
    opacity: 1 !important;
    transform: none !important;
    visibility: visible !important;
  }
  .rf-mobile-menu { display: none; }
  .rf-mobile-menu.open { display: flex; }
}

/* ============================================================
   Blog
   ============================================================ */

/* --- Index hero --- */
.blog-index-hero {
  background: var(--rf-grad-deep);
  background-image: var(--rf-grad-mesh);
  padding: 140px 40px 64px;
  text-align: center;
}
.blog-index-hero-inner { max-width: 640px; margin: 0 auto; }
.blog-index-hero h1 {
  font-family: var(--rf-font-display);
  font-size: var(--rf-text-5xl);
  font-weight: 700;
  letter-spacing: var(--rf-track-tight);
  line-height: var(--rf-leading-tight);
  color: var(--rf-white);
  margin: 16px 0 0;
}
.blog-index-sub {
  font-size: var(--rf-text-lg);
  color: var(--rf-ink-400);
  line-height: var(--rf-leading-body);
  margin: 16px 0 0;
}

/* --- Tag filter --- */
.blog-filter {
  background: var(--rf-ink-950);
  border-bottom: 1px solid var(--rf-line-faint);
  padding: 20px 40px;
  position: sticky;
  top: 60px;
  z-index: 90;
}
.blog-filter-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.blog-filter-tag {
  background: transparent;
  border: 1px solid var(--rf-line);
  color: var(--rf-ink-400);
  padding: 6px 16px;
  border-radius: var(--rf-r-pill);
  font-family: var(--rf-font-body);
  font-size: var(--rf-text-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--rf-dur-fast) var(--rf-ease);
  text-transform: capitalize;
}
.blog-filter-tag:hover { border-color: var(--rf-ink-400); color: var(--rf-white); }
.blog-filter-tag.active {
  background: var(--rf-grad-cta);
  border-color: transparent;
  color: var(--rf-white);
}
/* Mobile-only dropdown alternative to the pill row (toggled in the 920px query).
   Option labels are Title-Cased in the template, not via text-transform, because
   Firefox ignores text-transform on the closed <select> value. */
.blog-filter-select {
  display: none;
  max-width: 360px;
}

/* --- Blog index section --- */
.blog-index-section { background: var(--rf-ink-950); }

/* --- Blog grid --- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

/* --- Blog card --- */
.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--rf-ink-900);
  border: 1px solid var(--rf-line-faint);
  border-radius: var(--rf-r-xl);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform var(--rf-dur-base) var(--rf-ease), box-shadow var(--rf-dur-base) var(--rf-ease), border-color var(--rf-dur-base) var(--rf-ease);
}
.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--rf-glow-sm);
  border-color: var(--rf-line-glow);
}

.blog-card-image {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(6,182,212,0.15) 0%, rgba(37,99,235,0.15) 100%);
}
.blog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--rf-dur-slow) var(--rf-ease);
}
.blog-card:hover .blog-card-image img { transform: scale(1.04); }

/* Auto-generated placeholder hero (imageless posts) — fills the 16:9 box and
   mirrors the img hover treatment. preserveAspectRatio="slice" acts like
   object-fit: cover. */
.blog-hero-svg {
  display: block;
  width: 100%;
  height: 100%;
}
.blog-card-image .blog-hero-svg {
  transition: transform var(--rf-dur-slow) var(--rf-ease);
}
.blog-card:hover .blog-card-image .blog-hero-svg { transform: scale(1.04); }

.blog-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }

.blog-card-tags { display: flex; gap: 6px; margin-bottom: 12px; }
.blog-card-tag {
  font-family: var(--rf-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: var(--rf-track-wide);
  text-transform: uppercase;
  color: var(--rf-cyan-400);
  background: rgba(6,182,212,0.1);
  padding: 3px 8px;
  border-radius: var(--rf-r-sm);
}

.blog-card-title {
  font-family: var(--rf-font-display);
  font-size: var(--rf-text-xl);
  font-weight: 600;
  color: var(--rf-white);
  line-height: var(--rf-leading-snug);
  margin: 0 0 8px;
}

.blog-card-excerpt {
  font-size: var(--rf-text-sm);
  color: var(--rf-ink-400);
  line-height: var(--rf-leading-body);
  margin: 0 0 16px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card-meta {
  font-size: 13px;
  color: var(--rf-ink-500);
  display: flex;
  align-items: center;
  gap: 6px;
}
.blog-card-dot { font-size: 8px; }

/* --- Empty state --- */
.blog-empty-state {
  text-align: center;
  padding: 40px 0;
  color: var(--rf-ink-400);
  font-size: var(--rf-text-base);
}
.blog-empty-state a { color: var(--rf-cyan-400); }

/* --- Blog post hero --- */
.blog-hero {
  background: var(--rf-grad-deep);
  background-image: var(--rf-grad-mesh);
  padding: 140px 40px 64px;
}
.blog-hero-inner { max-width: 780px; margin: 0 auto; }
/* ============================================================
   BREADCRUMB (feature sub-pages + blog posts) — FIZZY-576
   Visible trail matching the BreadcrumbList JSON-LD so the
   markup describes content the reader can actually see.
   ============================================================ */
.mkt-breadcrumb {
  max-width: 1280px;
  margin: 0 auto;
  padding: 20px 40px 0;
}
.mkt-breadcrumb-list {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  list-style: none; margin: 0; padding: 0;
  font-size: 13px; line-height: 1.4; color: var(--rf-ink-400);
}
.mkt-breadcrumb-list li { display: flex; align-items: center; gap: 8px; min-width: 0; }
.mkt-breadcrumb-list li:not(:first-child)::before {
  content: "/"; color: var(--rf-ink-600); font-size: 12px;
}
.mkt-breadcrumb-list a {
  color: var(--rf-ink-400); text-decoration: none;
  transition: color var(--rf-dur-base) var(--rf-ease);
}
.mkt-breadcrumb-list a:hover { color: var(--rf-white); }
.mkt-breadcrumb-list li[aria-current="page"] {
  color: var(--rf-ink-200); overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
/* Blog posts place the trail inside the (narrower, centered) hero. */
.blog-breadcrumb { margin-bottom: 24px; }
@media (max-width: 640px) {
  .mkt-breadcrumb { padding: 14px 20px 0; }
}
.blog-hero h1 {
  font-family: var(--rf-font-display);
  font-size: var(--rf-text-4xl);
  font-weight: 700;
  color: var(--rf-white);
  line-height: var(--rf-leading-tight);
  letter-spacing: var(--rf-track-tight);
  margin: 0 0 24px;
}

.blog-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  color: var(--rf-ink-400);
  font-size: var(--rf-text-sm);
  margin-bottom: 16px;
}
.blog-meta i { margin-right: 4px; color: var(--rf-ink-500); }

.blog-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.blog-tag {
  font-family: var(--rf-font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: var(--rf-track-wide);
  text-transform: uppercase;
  color: var(--rf-cyan-400);
  background: rgba(6,182,212,0.12);
  padding: 4px 10px;
  border-radius: var(--rf-r-sm);
  text-decoration: none;
  transition: background var(--rf-dur-fast) var(--rf-ease);
}
.blog-tag:hover { background: rgba(6,182,212,0.22); }

/* --- Blog article --- */
.blog-article {
  background: var(--rf-ink-950);
  padding: 64px 40px;
}
.blog-article-inner { max-width: 780px; margin: 0 auto; }

/* --- Tool CTA card ([!TOOL] blockquotes, see markdown_handler.rb) --- */
.blog-tool-cta {
  margin: 36px 0;
  padding: 26px 28px;
  background:
    radial-gradient(at 15% 0%, rgba(6,182,212,0.14) 0px, transparent 55%),
    radial-gradient(at 85% 100%, rgba(59,130,246,0.12) 0px, transparent 55%),
    #0f172a;
  border: 1px solid rgba(34,211,238,0.35);
  border-radius: 14px;
}
.blog-tool-cta p { margin: 0 0 16px; }
.blog-tool-cta p:first-child { font-size: 1.08rem; color: #f1f5f9; }
.blog-tool-cta p:last-child { margin: 0; }
.blog-tool-cta p:last-child a {
  display: inline-block;
  margin: 0 10px 0 0;
  padding: 11px 20px;
  background: linear-gradient(90deg, #06b6d4, #3b82f6);
  border-radius: 10px;
  color: #020617;
  font-weight: 600;
  text-decoration: none;
}
.blog-tool-cta p:last-child a:hover { filter: brightness(1.1); color: #020617; }

/* --- Prose typography --- */
.blog-prose {
  font-family: var(--rf-font-body);
  font-size: var(--rf-text-lg);
  line-height: var(--rf-leading-prose);
  color: var(--rf-ink-300);
}

.blog-prose h2 {
  font-family: var(--rf-font-display);
  font-size: var(--rf-text-2xl);
  font-weight: 700;
  color: var(--rf-white);
  margin: 48px 0 16px;
  letter-spacing: var(--rf-track-snug);
}
.blog-prose h3 {
  font-family: var(--rf-font-display);
  font-size: var(--rf-text-xl);
  font-weight: 600;
  color: var(--rf-white);
  margin: 36px 0 12px;
}
.blog-prose h4 {
  font-family: var(--rf-font-display);
  font-size: var(--rf-text-lg);
  font-weight: 600;
  color: var(--rf-ink-200);
  margin: 28px 0 8px;
}

.blog-prose p { margin: 0 0 20px; }
.blog-prose strong { color: var(--rf-white); font-weight: 600; }

.blog-prose a {
  color: var(--rf-cyan-400);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--rf-dur-fast) var(--rf-ease);
}
.blog-prose a:hover { color: var(--rf-cyan-300); }

.blog-prose ul, .blog-prose ol {
  margin: 0 0 20px;
  padding-left: 24px;
}
.blog-prose li { margin-bottom: 8px; }
.blog-prose li::marker { color: var(--rf-cyan-500); }

.blog-prose blockquote {
  border-left: 3px solid var(--rf-cyan-500);
  margin: 24px 0;
  padding: 16px 24px;
  background: rgba(6,182,212,0.06);
  border-radius: 0 var(--rf-r-md) var(--rf-r-md) 0;
  color: var(--rf-ink-200);
  font-style: italic;
}
.blog-prose blockquote p:last-child { margin-bottom: 0; }

.blog-prose pre {
  background: var(--rf-ink-900);
  border: 1px solid var(--rf-line-faint);
  border-radius: var(--rf-r-md);
  padding: 20px 24px;
  margin: 24px 0;
  overflow-x: auto;
  font-family: var(--rf-font-mono);
  font-size: var(--rf-text-sm);
  line-height: 1.6;
  color: var(--rf-ink-200);
}
.blog-prose code {
  font-family: var(--rf-font-mono);
  font-size: 0.875em;
  background: var(--rf-ink-900);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--rf-cyan-300);
}
.blog-prose pre code { background: none; padding: 0; border-radius: 0; color: inherit; }

.blog-prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: var(--rf-text-base);
}
.blog-prose th {
  text-align: left;
  padding: 10px 16px;
  border-bottom: 2px solid var(--rf-line);
  color: var(--rf-white);
  font-weight: 600;
}
.blog-prose td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--rf-line-faint);
}

.blog-prose img {
  max-width: 100%;
  height: auto;
  border-radius: var(--rf-r-lg);
  margin: 24px 0;
}

.blog-prose hr {
  border: none;
  height: 1px;
  background: var(--rf-grad-divider);
  margin: 48px 0;
}

.blog-prose em { color: var(--rf-ink-300); }

/* --- Share --- */
.blog-share {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--rf-line-faint);
  display: flex;
  align-items: center;
  gap: 16px;
}
.blog-share-label {
  font-size: var(--rf-text-sm);
  color: var(--rf-ink-500);
  font-weight: 500;
}
.blog-share-links { display: flex; gap: 8px; }
.blog-share-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--rf-r-md);
  background: var(--rf-ink-900);
  border: 1px solid var(--rf-line-faint);
  color: var(--rf-ink-400);
  font-size: 16px;
  text-decoration: none;
  transition: all var(--rf-dur-fast) var(--rf-ease);
}
.blog-share-btn:hover {
  border-color: var(--rf-cyan-500);
  color: var(--rf-cyan-400);
  background: rgba(6,182,212,0.08);
}

/* --- Related --- */
.blog-related { background: var(--rf-ink-950); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 920px) {
  .rf-hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .rf-section { padding: 64px 24px; }
  .rf-hero { padding: 56px 24px 64px; }
  .rf-feat-hero { padding: 64px 24px 48px; }
  .rf-nav { padding: 14px 20px; }
  .rf-nav-links { display: none; }
  .rf-nav-cta { display: none; }
  .rf-nav-right { display: flex; }
  .rf-nav-demo-mobile { display: inline-flex; }
  .rf-nav-toggle { display: block; }
  .rf-footer-inner { grid-template-columns: 1fr 1fr; }
  .big-split, .big-split.reverse { grid-template-columns: 1fr; gap: 40px; }
  .cap-grid { grid-template-columns: 1fr; }
  .ba-split { grid-template-columns: 1fr; }
  .rf-cta-strip { padding: 64px 24px; }
  .rf-cta-row { flex-direction: column; align-items: center; width: 100%; }
  .rf-cta-row .rf-btn { width: 100%; max-width: 320px; text-align: center; justify-content: center; }
  .final-cta { padding: 48px 24px 64px; }
  .final-cta-card { padding: 36px 24px; }
  .final-cta .rf-cta-row { flex-direction: column; align-items: center; width: 100%; }
  .final-cta .rf-btn { width: 100%; max-width: 320px; text-align: center; justify-content: center; }

  /* Blog responsive */
  .blog-index-hero { padding: 120px 24px 48px; }
  .blog-index-hero h1 { font-size: var(--rf-text-4xl); }
  .blog-filter { padding: 16px 24px; top: 56px; }
  .blog-filter-inner { display: none; }
  .blog-filter-select { display: block; }
  .blog-grid { grid-template-columns: 1fr; gap: 24px; }
  .blog-hero { padding: 120px 24px 48px; }
  .blog-hero h1 { font-size: var(--rf-text-3xl); }
  .blog-meta { gap: 12px; }
  .blog-article { padding: 48px 24px; }
  .blog-prose { font-size: var(--rf-text-base); }
  .blog-share { flex-direction: column; align-items: flex-start; }
}

/* ============================================================
   COOKIE CONSENT BANNER
   ============================================================ */
.rf-consent-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}
.rf-consent-banner.visible {
  transform: translateY(0);
  pointer-events: auto;
}
.rf-consent-inner {
  max-width: 1100px;
  margin: 0 auto 24px;
  padding: 20px 28px;
  display: flex;
  align-items: center;
  gap: 24px;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--rf-line);
  border-radius: var(--rf-r-xl, 16px);
  box-shadow: 0 20px 60px -12px rgba(0, 0, 0, 0.6), 0 0 40px rgba(6, 182, 212, 0.06);
}
.rf-consent-text {
  flex: 1;
  font-size: 13px;
  line-height: 1.55;
  color: var(--rf-ink-300);
}
.rf-consent-text p { margin: 0; }
.rf-consent-text strong { color: var(--rf-white); font-weight: 600; }
.rf-consent-link {
  display: inline-block;
  margin-top: 6px;
  font-family: var(--rf-font-mono);
  font-size: 11px;
  color: var(--rf-cyan-400);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.rf-consent-link:hover { color: var(--rf-cyan-300); }
.rf-consent-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}
.rf-consent-btn {
  padding: 10px 16px;
  border-radius: var(--rf-r-md, 8px);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
  border: none;
}
.rf-consent-btn-primary {
  background: var(--rf-grad-cta, linear-gradient(135deg, #06b6d4, #3b82f6));
  color: white;
  box-shadow: 0 0 16px rgba(6, 182, 212, 0.25);
}
.rf-consent-btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }
.rf-consent-btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--rf-ink-300);
  border: 1px solid var(--rf-line);
}
.rf-consent-btn-secondary:hover { background: rgba(255, 255, 255, 0.10); color: var(--rf-white); }

@media (max-width: 768px) {
  .rf-consent-inner {
    flex-direction: column;
    margin: 0 12px 12px;
    padding: 18px 20px;
    gap: 16px;
  }
  .rf-consent-actions {
    width: 100%;
    flex-direction: column;
    gap: 8px;
  }
  .rf-consent-btn { width: 100%; text-align: center; }
}

/* ============ Blog AEO components (key takeaways / FAQ / sources / tables) ============ */
.blog-takeaways {
  margin: 0 0 32px;
  padding: 20px 24px;
  background: var(--rf-ink-850);
  border: 1px solid var(--rf-line);
  border-left: 3px solid var(--rf-cyan-400);
  border-radius: 12px;
}
.blog-takeaways h2 {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--rf-cyan-300);
  margin: 0 0 12px;
}
.blog-takeaways ul { margin: 0; padding-left: 20px; }
.blog-takeaways li { color: var(--rf-ink-200); margin: 6px 0; line-height: 1.6; }

.blog-faq { margin: 48px 0 0; }
.blog-faq > h2 { color: var(--rf-white); margin: 0 0 16px; }
.blog-faq-item {
  border: 1px solid var(--rf-line);
  border-radius: 10px;
  padding: 14px 18px;
  margin: 10px 0;
  background: var(--rf-ink-900);
}
.blog-faq-item summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--rf-ink-100);
  list-style: none;
}
.blog-faq-item summary::-webkit-details-marker { display: none; }
.blog-faq-item[open] summary { color: var(--rf-cyan-300); margin-bottom: 8px; }
.blog-faq-a { color: var(--rf-ink-300); line-height: 1.7; }

.blog-sources { margin: 40px 0 0; padding-top: 20px; border-top: 1px solid var(--rf-line); }
.blog-sources > h2 { font-size: 1.125rem; color: var(--rf-ink-200); margin: 0 0 10px; }
.blog-sources ol { margin: 0; padding-left: 20px; color: var(--rf-ink-400); }
.blog-sources li { margin: 6px 0; font-size: 0.875rem; }
.blog-sources a { color: var(--rf-cyan-400); }

/* Tables inside prose (comparison / feature matrices) */
.blog-prose table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 0.9375rem; }
.blog-prose th, .blog-prose td { border: 1px solid var(--rf-line); padding: 10px 14px; text-align: left; vertical-align: top; }
.blog-prose thead th { background: var(--rf-ink-850); color: var(--rf-white); }
.blog-prose tbody tr:nth-child(even) { background: rgba(255,255,255,0.02); }

/* ============================================================
   INTERACTIVE CHECKLIST (/tools/*) — shared, data-driven
   Rendered by app/marketing/pages/tools/_checklist.html.erb
   ============================================================ */
.rfck-shell { max-width: 920px; margin: 0 auto; padding: 64px 24px 96px; }

.rfck-head { text-align: center; margin-bottom: 40px; }
.rfck-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: var(--rf-r-pill);
  border: 1px solid rgba(6,182,212,0.30); background: rgba(6,182,212,0.08);
  font-family: var(--rf-font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: var(--rf-track-wide);
  color: var(--rf-cyan-400); font-weight: 600;
}
.rfck-eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--rf-cyan-400); box-shadow: 0 0 8px var(--rf-glow-cyan); }
.rfck-h1 {
  font-family: var(--rf-font-display); font-weight: 600;
  font-size: clamp(34px, 4.4vw, 52px); letter-spacing: -0.03em; line-height: 1.06;
  color: var(--rf-white); margin: 18px 0 16px; text-wrap: balance;
}
.rfck-intro { font-size: 17px; color: var(--rf-ink-300); line-height: 1.6; max-width: 68ch; margin: 0 auto; }

/* Overall progress + controls */
.rfck-overall {
  position: sticky; top: 12px; z-index: 5;
  background: rgba(15,23,42,0.82); backdrop-filter: blur(16px);
  border: 1px solid var(--rf-line); border-radius: var(--rf-r-xl);
  padding: 18px 20px; margin-bottom: 28px; box-shadow: var(--rf-lift-lg);
}
.rfck-overall-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 12px; }
.rfck-overall-label { font-family: var(--rf-font-display); font-weight: 600; font-size: 15px; color: var(--rf-white); letter-spacing: -0.01em; }
.rfck-overall-count { color: var(--rf-cyan-400); font-variant-numeric: tabular-nums; }
.rfck-overall-total { color: var(--rf-ink-400); font-weight: 500; font-family: var(--rf-font-mono); font-size: 12px; }
.rfck-controls { display: flex; gap: 8px; flex-wrap: wrap; }
.rfck-btn {
  display: inline-flex; align-items: center; gap: 7px;
  border: 1px solid var(--rf-line-strong); background: var(--rf-ink-900);
  color: var(--rf-ink-300); padding: 8px 14px; border-radius: var(--rf-r-md);
  font-size: 13px; font-weight: 500; cursor: pointer;
  transition: all var(--rf-dur-base) var(--rf-ease);
}
.rfck-btn:hover { color: var(--rf-white); border-color: var(--rf-cyan-500); }
.rfck-btn-pdf[disabled], .rfck-btn-pdf[aria-disabled="true"] { opacity: 0.5; cursor: not-allowed; }
.rfck-btn-pdf[disabled]:hover { color: var(--rf-ink-300); border-color: var(--rf-line-strong); }
.rfck-soon {
  font-family: var(--rf-font-mono); font-size: 9px; text-transform: uppercase; letter-spacing: var(--rf-track-wide);
  color: var(--rf-cyan-400); border: 1px solid rgba(6,182,212,0.30); border-radius: var(--rf-r-pill);
  padding: 2px 7px; margin-left: 2px;
}

/* Progress bars */
.rfck-bar { width: 100%; height: 8px; border-radius: var(--rf-r-pill); background: rgba(255,255,255,0.06); overflow: hidden; }
.rfck-bar-sm { height: 5px; margin-top: 4px; }
.rfck-bar-fill { display: block; height: 100%; border-radius: var(--rf-r-pill); background: var(--rf-grad-cta); transition: width var(--rf-dur-base) var(--rf-ease); }

/* Sections */
.rfck-section {
  border: 1px solid var(--rf-line-faint); background: var(--rf-ink-900);
  border-radius: var(--rf-r-xl); padding: 26px 26px 22px; margin-bottom: 18px;
  transition: border-color var(--rf-dur-base) var(--rf-ease);
}
.rfck-section.is-complete { border-color: rgba(16,185,129,0.35); }
.rfck-section-head { margin-bottom: 16px; }
.rfck-section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
.rfck-section-title { font-family: var(--rf-font-display); font-weight: 600; font-size: 20px; letter-spacing: -0.015em; color: var(--rf-white); margin: 0; }
.rfck-section-count { font-family: var(--rf-font-mono); font-size: 12px; color: var(--rf-ink-400); font-variant-numeric: tabular-nums; white-space: nowrap; }
.rfck-section.is-complete .rfck-section-count { color: var(--rf-positive); }
.rfck-section-summary { color: var(--rf-ink-400); font-size: 14px; line-height: 1.6; margin: 12px 0 0; }
.rfck-section-meta { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 14px; }
.rfck-cite {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--rf-font-mono); font-size: 11px; color: var(--rf-ink-400);
  text-decoration: none; transition: color var(--rf-dur-base) var(--rf-ease);
}
.rfck-cite:hover { color: var(--rf-cyan-400); }
.rfck-cite-pillar { color: var(--rf-cyan-400); }
.rfck-cite-pillar:hover { color: var(--rf-white); }

/* Items */
.rfck-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 2px; }
.rfck-item { margin: 0; }
.rfck-item-label {
  display: flex; align-items: flex-start; gap: 13px;
  padding: 12px 12px; border-radius: var(--rf-r-md); cursor: pointer;
  transition: background var(--rf-dur-base) var(--rf-ease);
}
.rfck-item-label:hover { background: rgba(255,255,255,0.03); }
.rfck-check { position: absolute; opacity: 0; width: 1px; height: 1px; }
.rfck-box {
  flex-shrink: 0; width: 22px; height: 22px; margin-top: 1px;
  border: 1px solid var(--rf-line-strong); background: var(--rf-ink-850);
  border-radius: 7px; display: inline-flex; align-items: center; justify-content: center;
  color: transparent; font-size: 14px;
  transition: all var(--rf-dur-base) var(--rf-ease);
}
.rfck-check:checked + .rfck-box { background: var(--rf-grad-cta); border-color: transparent; color: #fff; }
.rfck-check:focus-visible + .rfck-box { outline: 2px solid var(--rf-cyan-400); outline-offset: 2px; }
.rfck-item-text { color: var(--rf-ink-200); font-size: 15px; line-height: 1.55; }
.rfck-check:checked ~ .rfck-item-text { color: var(--rf-ink-400); }

.rfck-feature { margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--rf-line-faint); }
.rfck-feature a { font-family: var(--rf-font-mono); font-size: 12px; font-weight: 600; color: var(--rf-cyan-400); text-decoration: none; text-transform: uppercase; letter-spacing: var(--rf-track-wide); }
.rfck-feature a:hover { color: var(--rf-white); }

.rfck-note { color: var(--rf-ink-500); font-size: 13px; line-height: 1.6; margin: 24px 0 0; text-align: center; }

/* Conversion CTA */
.rfck-cta {
  margin-top: 40px; text-align: center;
  border: 1px solid var(--rf-line); border-radius: var(--rf-r-2xl, 24px);
  background: rgba(6,182,212,0.05); padding: 44px 32px;
}
.rfck-cta-title { font-family: var(--rf-font-display); font-weight: 600; font-size: 26px; letter-spacing: -0.02em; color: var(--rf-white); margin: 0 0 12px; }
.rfck-cta-sub { color: var(--rf-ink-300); font-size: 16px; line-height: 1.6; max-width: 60ch; margin: 0 auto 24px; }
.rfck-cta-btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--rf-grad-cta); color: #fff; text-decoration: none;
  padding: 14px 28px; border-radius: var(--rf-r-md); font-weight: 600; font-size: 15px;
  box-shadow: var(--rf-glow-sm); transition: all var(--rf-dur-base) var(--rf-ease);
}
.rfck-cta-btn:hover { transform: translateY(-1px); filter: brightness(1.05); }

@media (max-width: 640px) {
  .rfck-shell { padding: 40px 16px 64px; }
  .rfck-section { padding: 20px 18px; }
  .rfck-overall { position: static; }
  .rfck-section-heading { flex-direction: column; gap: 4px; }
}

.rfck-reviewed {
  margin-top: 10px;
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(148, 163, 184, 0.9);
}

/* ============================================================
   Email-gated PDF download modal (FIZZY-696)
   ============================================================ */
.rfpg-backdrop {
  position: fixed; inset: 0; z-index: 200;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  background: rgba(2,6,23,0.72);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.rfpg-backdrop[hidden] { display: none; }

.rfpg-dialog {
  position: relative;
  width: 100%; max-width: 460px;
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  background: var(--rf-ink-900);
  border: 1px solid var(--rf-line-strong);
  border-radius: var(--rf-r-xl);
  box-shadow: 0 30px 80px -16px rgba(0,0,0,0.7), 0 0 60px rgba(37,99,235,0.10);
  padding: 32px;
}

.rfpg-close {
  position: absolute; top: 16px; right: 16px;
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: transparent; border: 1px solid var(--rf-line);
  color: var(--rf-ink-400);
  cursor: pointer;
  transition: all var(--rf-dur-base) var(--rf-ease);
}
.rfpg-close:hover { color: var(--rf-white); border-color: var(--rf-line-strong); }

.rfpg-title {
  font-family: var(--rf-font-display); font-weight: 600; font-size: 21px;
  letter-spacing: -0.015em; color: var(--rf-white);
  margin: 0 0 8px; padding-right: 24px;
}
.rfpg-sub { font-size: 14px; color: var(--rf-ink-300); line-height: 1.55; margin: 0 0 22px; }

.rfpg-field { margin-bottom: 14px; }
.rfpg-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.rfpg-optional { color: var(--rf-ink-500); font-weight: 500; text-transform: none; letter-spacing: 0; }

.rfpg-checkbox {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 13px; color: var(--rf-ink-300); line-height: 1.5;
  margin: 4px 0 18px; cursor: pointer;
}
.rfpg-checkbox input { margin-top: 3px; flex-shrink: 0; }

.rfpg-turnstile { margin-bottom: 16px; min-height: 65px; }

.rfpg-error {
  background: var(--rf-critical-bg); color: #fca5a5;
  border: 1px solid rgba(239,68,68,0.3); border-radius: var(--rf-r-md);
  padding: 10px 14px; font-size: 13px; line-height: 1.5;
  margin-bottom: 16px;
}
.rfpg-error[hidden] { display: none; }

.rfpg-submit { width: 100%; justify-content: center; }
.rfpg-submit[disabled] { opacity: 0.6; cursor: not-allowed; }

.rfpg-legal { font-size: 11.5px; color: var(--rf-ink-500); line-height: 1.55; margin: 14px 0 0; }
.rfpg-legal a { color: var(--rf-cyan-400); }
.rfpg-legal a:hover { color: var(--rf-white); }

.rfpg-success-icon { font-size: 40px; color: var(--rf-positive); margin-bottom: 12px; }

@media (max-width: 480px) {
  .rfpg-dialog { padding: 24px; }
  .rfpg-row { grid-template-columns: 1fr; }
}