/* ═══════════════════════════════════════════════════════════
   LUMINA — Revenue Systems Engineering
   styles.css
═══════════════════════════════════════════════════════════ */

/* ─── CUSTOM PROPERTIES ─────────────────────────────────── */
:root {
  /* Color system */
  --bg:           #09090B;
  --bg-card:      #111115;
  --bg-card-2:    #18181C;
  --bg-hover:     #1E1E24;
  --border:       rgba(255, 255, 255, 0.07);
  --border-md:    rgba(255, 255, 255, 0.12);
  --border-strong:rgba(255, 255, 255, 0.18);

  --text:         #F1F5F9;
  --text-2:       #94A3B8;
  --text-3:       #475569;
  --text-muted:   #334155;

  --accent:       #3B82F6;
  --accent-dim:   rgba(59, 130, 246, 0.15);
  --accent-glow:  rgba(59, 130, 246, 0.25);
  --accent-hover: #2563EB;
  --success:      #10B981;
  --danger:       #EF4444;

  /* Typography */
  --font:         'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;

  /* Spacing */
  --section-y:    7rem;
  --container:    1180px;
  --radius-sm:    6px;
  --radius:       10px;
  --radius-lg:    14px;
  --radius-xl:    20px;

  /* Transitions */
  --ease:         200ms cubic-bezier(0.4, 0, 0.2, 1);
  --ease-slow:    400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── RESET ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, select, textarea { font-family: inherit; }

/* ─── UTILITY ────────────────────────────────────────────── */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: var(--section-y) 0;
  position: relative;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 1px;
  background: var(--accent);
  flex-shrink: 0;
}

.section-headline {
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 1.25rem;
  max-width: 52rem;
}

.section-subhead {
  font-size: 1.05rem;
  color: var(--text-2);
  max-width: 42rem;
  line-height: 1.7;
  margin-bottom: 3.5rem;
}

/* ─── BUTTONS ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--radius-sm);
  transition: all var(--ease);
  white-space: nowrap;
  padding: 0.6rem 1.25rem;
  line-height: 1;
}

.btn-sm { padding: 0.5rem 1rem; font-size: 0.82rem; }
.btn-lg { padding: 0.85rem 1.75rem; font-size: 0.95rem; }
.btn-full { width: 100%; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: 1.5px solid var(--accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border-md);
}
.btn-outline:hover {
  border-color: var(--border-strong);
  background: var(--bg-hover);
  transform: translateY(-1px);
}

/* ─── NAV ────────────────────────────────────────────────── */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  border-bottom: 1px solid transparent;
  transition: background var(--ease-slow), border-color var(--ease-slow), backdrop-filter var(--ease-slow);
}

#nav.scrolled {
  background: rgba(9, 9, 11, 0.85);
  border-color: var(--border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  flex-shrink: 0;
}

.logo-icon { flex-shrink: 0; }

.logo-text-group {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.logo-name {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--text);
  line-height: 1;
}

.logo-sub {
  font-size: 0.65rem;
  color: var(--text-3);
  letter-spacing: 0.05em;
  line-height: 1.4;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex: 1;
  justify-content: center;
}

.nav-link {
  font-size: 0.85rem;
  font-weight: 450;
  color: var(--text-2);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color var(--ease), background var(--ease);
}
.nav-link:hover { color: var(--text); background: var(--bg-hover); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

/* Language toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--text-3);
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: all var(--ease);
}
.lang-toggle:hover { color: var(--text-2); border-color: var(--border-md); }

.lang-opt { transition: color var(--ease); cursor: pointer; }
.lang-opt.active { color: var(--accent); }
.lang-sep { color: var(--text-muted); }

/* Mobile menu button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  transition: background var(--ease);
}
.mobile-menu-btn:hover { background: var(--bg-hover); }
.mobile-menu-btn span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--text-2);
  border-radius: 2px;
  transition: all var(--ease);
}
.mobile-menu-btn.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.mobile-menu-btn.open span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 1rem 1.5rem 1.5rem;
  border-top: 1px solid var(--border);
  background: rgba(9, 9, 11, 0.97);
  gap: 0.25rem;
}
.mobile-menu.open { display: flex; }

.mobile-link {
  font-size: 0.95rem;
  font-weight: 450;
  color: var(--text-2);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  transition: color var(--ease);
}
.mobile-link:hover { color: var(--text); }

.mobile-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.25rem;
  margin-top: 0.5rem;
}

/* ─── HERO ───────────────────────────────────────────────── */
.section-hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: 64px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(59, 130, 246, 0.06) 1px, transparent 0);
  background-size: 44px 44px;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 65%);
  top: 45%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-top: 3rem;
  padding-bottom: 3rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(59, 130, 246, 0.25);
  padding: 0.4rem 0.875rem;
  border-radius: 100px;
  margin-bottom: 2rem;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-headline {
  font-size: clamp(2.5rem, 6.5vw, 4.5rem);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.04em;
  color: var(--text);
  margin-bottom: 1.5rem;
  max-width: 20ch;
}

.hero-subhead {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-2);
  max-width: 44ch;
  line-height: 1.65;
  margin-bottom: 2.5rem;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

/* Hero positioning statement */
.hero-statement {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.hero-statement-line {
  width: 24px;
  height: 1px;
  background: var(--text-3);
}

.hero-statement-text {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-3);
  letter-spacing: 0.05em;
}

/* System diagram */
.hero-diagram {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: nowrap;
}

.diagram-node {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-md);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.875rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-2);
  white-space: nowrap;
}

.node-revenue { border-color: rgba(16, 185, 129, 0.3); color: var(--success); }
.node-revenue svg { color: var(--success); }

.diagram-line {
  flex: 1;
  min-width: 32px;
  max-width: 64px;
  height: 1px;
  background: linear-gradient(90deg, var(--border-md), var(--accent-dim), var(--border-md));
  position: relative;
}

.diagram-line::after {
  content: '';
  position: absolute;
  right: -3px;
  top: -2.5px;
  width: 5px;
  height: 5px;
  border-top: 1px solid var(--border-md);
  border-right: 1px solid var(--border-md);
  transform: rotate(45deg);
}

/* ─── PROBLEM ────────────────────────────────────────────── */
.section-problem { background: var(--bg); }

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.problem-list { display: flex; flex-direction: column; gap: 1rem; }

.problem-item {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--ease), background var(--ease);
}
.problem-item:hover { border-color: var(--border-md); background: var(--bg-card-2); }

.problem-icon { flex-shrink: 0; margin-top: 1px; }

.problem-item p {
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.55;
}

.problem-callout {
  position: sticky;
  top: 5rem;
  padding: 2.5rem 0 2.5rem 2.5rem;
  border-left: 1px solid var(--border-md);
}

.callout-text {
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.025em;
  color: var(--text);
  margin-bottom: 1.25rem;
}

.callout-sub {
  font-size: 0.95rem;
  color: var(--text-2);
  line-height: 1.65;
}

/* ─── POSITIONING STATEMENT ──────────────────────────────── */
.section-positioning {
  padding: 4rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}

.positioning-inner {
  display: flex;
  align-items: center;
  gap: 3rem;
}

.positioning-statement {
  font-family: var(--font-mono);
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.02em;
  flex: 1;
}

.positioning-desc {
  flex: 1.4;
  font-size: 0.95rem;
  color: var(--text-2);
  line-height: 1.7;
  border-left: 1px solid var(--border-md);
  padding-left: 3rem;
}

/* ─── WHY SECTION ────────────────────────────────────────── */
.section-why { background: var(--bg); }

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 3rem;
}

.why-item {
  background: var(--bg-card);
  padding: 2rem 1.75rem;
  transition: background var(--ease);
}
.why-item:hover { background: var(--bg-card-2); }

.why-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 0.875rem;
}

.why-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.625rem;
  line-height: 1.35;
}

.why-desc {
  font-size: 0.85rem;
  color: var(--text-2);
  line-height: 1.6;
}

/* ─── SERVICES ───────────────────────────────────────────── */
.section-services { background: var(--bg-card); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.service-card {
  background: var(--bg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  transition: background var(--ease);
  position: relative;
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-dim) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--ease-slow);
  pointer-events: none;
}
.service-card:hover { background: var(--bg-card); }
.service-card:hover::before { opacity: 1; }

.card-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-md);
  border-radius: var(--radius-sm);
  color: var(--accent);
  flex-shrink: 0;
}

.card-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
}

.card-desc {
  font-size: 0.85rem;
  color: var(--text-2);
  line-height: 1.65;
  flex: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-top: 0.25rem;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--text-3);
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.2rem 0.5rem;
  letter-spacing: 0.03em;
}

/* ─── WHO IT'S FOR ───────────────────────────────────────── */
.section-who { background: var(--bg); }

.who-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.who-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color var(--ease), transform var(--ease);
}
.who-card:hover { border-color: var(--border-md); transform: translateY(-2px); }

.who-icon {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  line-height: 1;
}

.who-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.who-desc {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.6;
}

/* ─── PROCESS ────────────────────────────────────────────── */
.section-process { background: var(--bg-card); }

.process-track {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  gap: 0;
  align-items: start;
  margin-top: 1rem;
}

.process-step {
  padding: 2rem 1.5rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--ease);
}
.process-step:hover { border-color: var(--border-md); }

.process-connector {
  display: flex;
  align-items: flex-start;
  padding-top: 2.75rem;
  width: 2.5rem;
  flex-shrink: 0;
}
.process-connector::after {
  content: '';
  display: block;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--border-md), var(--accent-dim), var(--border-md));
}

.step-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.step-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.625rem;
  letter-spacing: -0.02em;
}

.step-desc {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.65;
  margin-bottom: 0.875rem;
}

.step-meta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-3);
  letter-spacing: 0.06em;
  padding: 0.3rem 0.625rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  display: inline-block;
}

/* ─── PROOF ──────────────────────────────────────────────── */
.section-proof { background: var(--bg); }

.proof-disclaimer {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-3);
  letter-spacing: 0.04em;
  margin-bottom: 2.5rem;
  margin-top: -2rem;
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.proof-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transition: border-color var(--ease);
}
.proof-card:hover { border-color: var(--border-md); }

.proof-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  background: var(--bg-hover);
  border: 1px solid var(--border);
  padding: 0.25rem 0.625rem;
  border-radius: 4px;
  display: inline-block;
  width: fit-content;
}

.proof-industry {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  margin-top: -0.25rem;
}

.proof-block { display: flex; flex-direction: column; gap: 0.375rem; }

.proof-block-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
}

.proof-block p, .proof-result p {
  font-size: 0.83rem;
  color: var(--text-2);
  line-height: 1.6;
}

.proof-result {
  border-top: 1px solid var(--border);
  padding-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}
.proof-result .proof-block-label { color: var(--success); }
.proof-result p { color: var(--text); }

/* ─── PRICING ────────────────────────────────────────────── */
.section-pricing { background: var(--bg-card); }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  align-items: start;
}

.pricing-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  position: relative;
  transition: border-color var(--ease), transform var(--ease);
}
.pricing-card:hover { border-color: var(--border-md); transform: translateY(-2px); }

.pricing-featured {
  border-color: rgba(59, 130, 246, 0.4);
  background: var(--bg-card-2);
}
.pricing-featured:hover { border-color: rgba(59, 130, 246, 0.65); }

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--bg-card-2);
  border: 1px solid rgba(59, 130, 246, 0.4);
  padding: 0.25rem 0.875rem;
  border-radius: 100px;
  white-space: nowrap;
}

.pricing-header { display: flex; flex-direction: column; gap: 0.375rem; }

.pricing-type {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}

.pricing-name {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.025em;
}

.pricing-tagline {
  font-size: 0.85rem;
  color: var(--text-2);
}

.pricing-body { flex: 1; }

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-bottom: 1.25rem;
}

.pricing-features li {
  font-size: 0.85rem;
  color: var(--text-2);
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.5;
}

.pricing-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.6;
}

.pricing-note {
  font-size: 0.78rem;
  color: var(--text-3);
  font-style: italic;
  line-height: 1.5;
}

.pricing-footer { margin-top: auto; }

.pricing-footnote {
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-3);
  margin-top: 2.5rem;
  font-family: var(--font-mono);
}

/* ─── FAQ ────────────────────────────────────────────────── */
.section-faq { background: var(--bg); }

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 720px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:last-child { border-bottom: none; }

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  text-align: left;
  background: var(--bg-card);
  transition: background var(--ease);
}
.faq-question:hover { background: var(--bg-card-2); }
.faq-question[aria-expanded="true"] { background: var(--bg-card-2); }

.faq-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1px solid var(--border-md);
  flex-shrink: 0;
  position: relative;
  transition: border-color var(--ease), transform var(--ease);
}
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--text-2);
  border-radius: 2px;
}
.faq-icon::before { width: 8px; height: 1px; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.faq-icon::after  { width: 1px; height: 8px; top: 50%; left: 50%; transform: translate(-50%, -50%); transition: transform var(--ease), opacity var(--ease); }

.faq-question[aria-expanded="true"] .faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); opacity: 0; }
.faq-question[aria-expanded="true"] .faq-icon { border-color: var(--accent); }

.faq-answer {
  padding: 1rem 1.5rem 1.5rem;
  background: var(--bg-card-2);
  border-top: 1px solid var(--border);
}
.faq-answer p {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.7;
}

/* ─── CONTACT ────────────────────────────────────────────── */
.section-contact { background: var(--bg-card); }

.contact-container {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 5rem;
  align-items: start;
}

.contact-left { position: sticky; top: 5rem; }

.contact-subhead {
  font-size: 0.95rem;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  max-width: 36ch;
}

.contact-options { display: flex; flex-direction: column; gap: 1rem; }

.contact-option {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.125rem 1.25rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--ease), background var(--ease);
}
.contact-option:hover { border-color: var(--border-md); background: var(--bg-hover); }

.contact-option-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--accent);
  flex-shrink: 0;
}

.contact-option-label {
  font-size: 0.78rem;
  color: var(--text-3);
  margin-bottom: 0.2rem;
}

.contact-option-value {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
}

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 2rem;
}

.form-group { display: flex; flex-direction: column; gap: 0.5rem; }

.form-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: 0.01em;
}

.form-input {
  background: var(--bg-card);
  border: 1px solid var(--border-md);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.875rem;
  font-size: 0.875rem;
  color: var(--text);
  outline: none;
  transition: border-color var(--ease), box-shadow var(--ease);
  width: 100%;
}
.form-input::placeholder { color: var(--text-muted); }
.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.form-textarea { resize: vertical; min-height: 90px; }

.form-select { appearance: none; cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' stroke='%2364748B' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.875rem center; padding-right: 2.5rem; }

.form-note {
  font-size: 0.75rem;
  color: var(--text-3);
  text-align: center;
}

.form-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 3rem;
  text-align: center;
  background: var(--bg);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-xl);
}
.form-success p {
  font-size: 0.95rem;
  color: var(--text-2);
}

/* ─── FOOTER ─────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.footer-container {
  padding-top: 3.5rem;
  padding-bottom: 3rem;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 4rem;
  align-items: start;
}

.footer-logo { margin-bottom: 1rem; }

.footer-tagline {
  font-size: 0.82rem;
  color: var(--text-3);
  line-height: 1.6;
  max-width: 28ch;
}

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.footer-col-title {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 0.375rem;
}

.footer-col a {
  font-size: 0.83rem;
  color: var(--text-3);
  transition: color var(--ease);
}
.footer-col a:hover { color: var(--text-2); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 1.25rem 0;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-rights, .footer-domain {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ─── ANIMATIONS ─────────────────────────────────────────── */
.animate-fade-up {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.7s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.45s; }

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 1024px) {
  :root { --section-y: 5rem; }

  .process-track {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .process-connector { display: none; }

  .proof-grid { grid-template-columns: 1fr; max-width: 560px; }

  .problem-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .problem-callout { position: static; border-left: none; border-top: 1px solid var(--border-md); padding: 2rem 0 0; }

  .positioning-inner { flex-direction: column; gap: 1.5rem; }
  .positioning-desc { border-left: none; border-top: 1px solid var(--border); padding-left: 0; padding-top: 1.5rem; }

  .why-grid { grid-template-columns: 1fr 1fr; }

  .contact-container { grid-template-columns: 1fr; gap: 3rem; }
  .contact-left { position: static; }
}

@media (max-width: 768px) {
  :root { --section-y: 4rem; }

  .nav-links { display: none; }
  .mobile-menu-btn { display: flex; }
  .btn-sm { display: none; }

  .hero-diagram { display: none; }

  .services-grid { grid-template-columns: 1fr; }

  .who-grid { grid-template-columns: 1fr 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 480px; }
  .pricing-featured { order: -1; }

  .why-grid { grid-template-columns: 1fr; }

  .footer-container { grid-template-columns: 1fr; gap: 2.5rem; }
}

@media (max-width: 480px) {
  .hero-ctas { flex-direction: column; align-items: flex-start; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
  .who-grid { grid-template-columns: 1fr; }
  .proof-grid { grid-template-columns: 1fr; }
}

/* ─── ACCESSIBILITY ──────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .animate-on-scroll { opacity: 1; transform: none; }
  .animate-fade-up { opacity: 1; transform: none; animation: none; }
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}