/* ═══════════════════════════════════════════════
   KINE — Shared Styles
   Design system: KineFlow v1.0 (Dark / Prelaunch)
   ═══════════════════════════════════════════════ */

/* ── RESET ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ── TOKENS ── */
:root {
  /* Backgrounds */
  --bg:             #0A0A0A;
  --bg-subtle:      rgba(255,255,255,0.05);
  --bg-muted:       rgba(255,255,255,0.08);

  /* Text — solid hex, no opacity (avoids blending with bg grid) */
  --text:           #EEEEE9;
  --text-secondary: #A0A09C;
  --text-tertiary:  #6B6B68;

  /* Primary (maps to accent in dark theme) */
  --primary:        #FFCF00;
  --primary-fg:     #0A0A0A;
  --primary-hover:  #cc9f00;
  --primary-subtle: rgba(255,207,0,0.06);

  /* Destructive (reserved for critical actions) */
  --destructive:    #ef4444;

  /* Borders */
  --border:         rgba(255,255,255,0.12);
  --border-subtle:  rgba(255,255,255,0.06);

  /* Accent system */
  --accent:         #FFCF00;
  --accent-end:     #cc9f00;
  --accent-40:      rgba(255,207,0,0.4);
  --accent-30:      rgba(255,207,0,0.3);
  --accent-15:      rgba(255,207,0,0.15);
  --accent-12:      rgba(255,207,0,0.12);
  --accent-10:      rgba(255,207,0,0.1);
  --accent-06:      rgba(255,207,0,0.06);
  --accent-04:      rgba(255,207,0,0.04);
  --accent-03:      rgba(255,207,0,0.03);

  /* White opacity scale */
  --white-12:       rgba(255,255,255,0.12);
  --white-08:       rgba(255,255,255,0.08);
  --white-06:       rgba(255,255,255,0.06);
  --white-05:       rgba(255,255,255,0.05);
  --white-02:       rgba(255,255,255,0.02);

  /* Product identity (from brand design system) */
  --product-force:        #16C47F;                  /* Brand Green 300 — KineForce */
  --product-force-subtle: rgba(22,196,127,0.06);
  --product-force-border: rgba(22,196,127,0.2);

  /* Text-safe product colors (WCAG AA on dark — use product main colors) */
  --product-force-text:   #16C47F;                  /* Green 300 — ~7.0:1 on #0A0A0A */

  /* Focus */
  --ring:           #FFCF00;

  /* Typography */
  --font-body:      'Oswald', sans-serif;
  --font-mono:      'Source Code Pro', 'Menlo', monospace;

  /* Border Radius */
  --radius-sm:      0.25rem;    /* 4px */
  --radius-md:      0.375rem;   /* 6px */
  --radius-lg:      0.5rem;     /* 8px */
  --radius-full:    9999px;

  /* Shadows (removed — reads poorly on dark backgrounds) */
  --shadow-sm:      none;
  --shadow-md:      none;

  /* Layout */
  --max-w:          1200px;
  --ease-out:       cubic-bezier(0.16, 1, 0.3, 1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 16px;
  line-height: 1.6;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}


/* ═══════════════════════════════════════════════
   HERO BACKGROUND PHOTO
   ═══════════════════════════════════════════════ */

.hero-bg {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 55% 60%;
  opacity: 0.18;
  filter: grayscale(40%);
  display: block;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom, var(--bg) 0%, transparent 25%, transparent 55%, var(--bg) 100%),
    linear-gradient(to right,  var(--bg) 0%, transparent 30%, transparent 70%, var(--bg) 100%);
}


/* ═══════════════════════════════════════════════
   PHOTO FADE
   ═══════════════════════════════════════════════ */

.photo-fade {
  position: relative;
  overflow: hidden;
}
.photo-fade img {
  width: 100%;
  display: block;
  object-fit: cover;
}
.photo-fade::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom,  var(--bg) 0%, transparent 18%, transparent 82%, var(--bg) 100%),
    linear-gradient(to right,   var(--bg) 0%, transparent 12%, transparent 88%, var(--bg) 100%);
  pointer-events: none;
}


/* ═══════════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════════ */

.grid-bg {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(var(--accent-03) 1px, transparent 1px),
    linear-gradient(90deg, var(--accent-03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  padding: 0 40px;
  height: 64px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 100;
  background: rgba(10,10,10,0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  line-height: 0;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
}
.nav-link:hover {
  color: var(--text);
}
.nav-link--active {
  color: var(--text);
  font-weight: 600;
}
.nav-buy {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--primary-fg);
  background: var(--primary);
  padding: 8px 20px;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background 0.15s ease;
}
.nav-buy:hover {
  background: var(--primary-hover);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}


/* ═══════════════════════════════════════════════
   SECTIONS
   ═══════════════════════════════════════════════ */

.section {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 100px 40px;
}
.section--hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 100px;
  padding-bottom: 40px;
}
.section--compact {
  padding-top: 72px;
  padding-bottom: 72px;
}
.section--narrow {
  max-width: 900px;
}
.section--wide {
  max-width: var(--max-w);
}

/* ── SECTION LABELS ── */
.section-label {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-body);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 8px;
}
.section-sub {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
}


/* ═══════════════════════════════════════════════
   HERO (index.html)
   ═══════════════════════════════════════════════ */

.hero-title {
  font-family: var(--font-body);
  font-size: 48px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  color: var(--text);
}
.accent-bar {
  width: 60px;
  height: 2px;
  background: var(--accent);
  margin-bottom: 32px;
}

.hero-line {
  display: block;
  overflow: hidden;
}
.hero-line span {
  display: inline-block;
  animation: slideUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  transform: translateY(100%);
}
.hero-line:nth-child(2) span { animation-delay: 0.15s; }
.hero-line:nth-child(3) span { animation-delay: 0.3s; }
.hero-accent { color: var(--primary); }
.hero-sub {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: 48px;
}

/* ── HERO PRODUCT CARDS ── */
.hero-products {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  max-width: 480px;
  margin-bottom: 32px;
}
.hero-product {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  display: block;
}
.hero-product:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}
.hero-product-name {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
  color: var(--text);
}
.hero-product-type {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.hero-product-price {
  font-family: var(--font-body);
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}
.hero-product-price-note {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-tertiary);
  margin-top: 4px;
}
.hero-product-stock {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-tertiary);
}
.hero-free {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.6;
}


/* ═══════════════════════════════════════════════
   HOW IT WORKS — STEPS
   ═══════════════════════════════════════════════ */

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 32px;
}
.step {
  text-align: center;
}
.step-num {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border);
  background: var(--bg-subtle);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 16px;
}
.step-title {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.step-desc {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}


/* ═══════════════════════════════════════════════
   ECOSYSTEM TABLE
   ═══════════════════════════════════════════════ */

.eco-table-wrap {
  overflow-x: auto;
  margin-top: 24px;
}
.eco-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-body);
  font-size: 14px;
  min-width: 500px;
}
.eco-table thead th {
  text-align: left;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--bg-subtle);
  border-bottom: 2px solid var(--border);
}
.eco-table thead th:not(:first-child) {
  text-align: center;
}
.eco-table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text);
}
.eco-table tbody td:not(:first-child) {
  text-align: center;
  color: var(--text-secondary);
}
.eco-table .check {
  color: var(--primary);
  font-weight: 600;
  font-size: 16px;
}
.eco-table tbody tr:hover {
  background: var(--bg-subtle);
}


/* ═══════════════════════════════════════════════
   SOFTWARE TIERS
   ═══════════════════════════════════════════════ */

.tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}
.tier {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease;
}
.tier:hover {
  box-shadow: var(--shadow-md);
}
.tier--featured {
  border-color: var(--primary);
}
.tier-name {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.tier-price {
  font-family: var(--font-body);
  font-size: 36px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}
.tier-price-period {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-tertiary);
  margin-bottom: 20px;
}
.tier-desc {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.tier-feature {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text);
  padding: 6px 0;
  border-bottom: 1px solid var(--border-subtle);
}
.tier-feature:last-of-type {
  border-bottom: none;
}
.tier-feature--excluded {
  color: var(--text-tertiary);
  text-decoration: line-through;
}


/* ═══════════════════════════════════════════════
   FOUNDER
   ═══════════════════════════════════════════════ */

.founder-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 40px;
  align-items: center;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
}
.founder-avatar {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-full);
  background: var(--bg-muted);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 36px;
  color: var(--primary);
}
.founder-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-full);
}
.founder-quote {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  color: var(--text);
  line-height: 1.7;
  font-style: italic;
  margin-bottom: 16px;
}
.founder-name {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text);
}
.founder-creds {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
  line-height: 1.5;
}


/* ═══════════════════════════════════════════════
   PRODUCT HERO (kineforce.html)
   ═══════════════════════════════════════════════ */

.product-hero {
  padding-top: 140px;
  padding-bottom: 60px;
}
.product-hero-label {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.product-hero-title {
  font-family: var(--font-body);
  font-size: 42px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
  max-width: 700px;
}
.product-hero-tagline {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 560px;
  margin-top: 16px;
}
.product-hero-meta {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-top: 32px;
}
.product-price {
  font-family: var(--font-body);
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}
.product-price-sub {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-tertiary);
  margin-top: 4px;
}
.product-stock {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-secondary);
}
.product-ctas {
  margin-top: 32px;
  display: flex;
  align-items: center;
  gap: 16px;
}


/* ═══════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════ */

.btn-buy {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--primary-fg);
  background: var(--primary);
  padding: 14px 32px;
  border-radius: var(--radius-md);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background 0.15s ease;
}
.btn-buy:hover {
  background: var(--primary-hover);
}
.btn-buy:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

.btn-secondary {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--border);
  padding: 14px 32px;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.btn-secondary:hover {
  background: var(--bg-subtle);
  border-color: var(--text-tertiary);
}


/* ═══════════════════════════════════════════════
   FEATURE CARDS
   ═══════════════════════════════════════════════ */

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 32px;
}
.feature-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.feature-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}
.feature-card--wide {
  grid-column: 1 / -1;
}
.feature-name {
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.feature-desc {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.feature-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.feature-metric {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-secondary);
  background: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 3px 10px;
}

/* ── SECONDARY FEATURES ── */
.features-secondary {
  margin-top: 48px;
}
.features-secondary-title {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.features-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.feature-compact {
  padding: 20px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}
.feature-compact-name {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.feature-compact-desc {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}


/* ═══════════════════════════════════════════════
   SPECS GRID
   ═══════════════════════════════════════════════ */

.specs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}
.spec {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: center;
}
.spec-value {
  font-family: var(--font-body);
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}
.spec-label {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-tertiary);
  margin-top: 4px;
  letter-spacing: 0.04em;
}


/* ═══════════════════════════════════════════════
   VALIDATION BOX
   ═══════════════════════════════════════════════ */

.validation-box {
  background: var(--accent-04);
  border: 1px solid var(--accent-12);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 24px;
}
.stat-value {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}
.stat-label {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}
.validation-note {
  grid-column: 1 / -1;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-tertiary);
  border-top: 1px solid var(--border);
  padding-top: 16px;
  line-height: 1.5;
}

/* ── VALIDATION CHARTS ── */
.validation-chart {
  margin-top: 24px;
}
.validation-chart img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
  background: #141416;
  border: 1px solid var(--border);
}
.validation-chart-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 24px;
}
.validation-chart--half img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
  background: #141416;
  border: 1px solid var(--border);
}


/* ═══════════════════════════════════════════════
   BOTTOM CTA STRIP
   ═══════════════════════════════════════════════ */

.bottom-cta {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 48px 40px;
  max-width: var(--max-w);
  margin: 0 auto;
}
.bottom-cta-text {
  max-width: 500px;
}
.bottom-cta-title {
  font-family: var(--font-body);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text);
}
.bottom-cta-sub {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text-secondary);
  margin-top: 6px;
  line-height: 1.6;
}
.bottom-cta-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}


/* ═══════════════════════════════════════════════
   FAQ ACCORDION
   ═══════════════════════════════════════════════ */

.faq-list {
  margin-top: 24px;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  padding: 20px 40px 20px 0;
  cursor: pointer;
  position: relative;
  transition: color 0.15s ease;
}
.faq-question:hover {
  color: var(--text-secondary);
}
.faq-question::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  font-weight: 300;
  color: var(--text-tertiary);
  transition: transform 0.2s ease;
}
.faq-item.open .faq-question::after {
  content: '−';
  color: var(--primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s var(--ease-out);
}
.faq-item.open .faq-answer {
  max-height: 300px;
}
.faq-answer-inner {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  padding-bottom: 20px;
}
.faq-answer-inner a {
  color: var(--primary);
  text-decoration: none;
}
.faq-answer-inner a:hover {
  text-decoration: underline;
}


/* ═══════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════ */

.footer {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  padding: 60px 40px 40px;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}
.footer-col-title {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 16px;
}
.footer-link {
  display: block;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 8px;
  transition: color 0.15s ease;
}
.footer-link:hover {
  color: var(--text);
}
.footer-bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.footer-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  line-height: 0;
}
.footer-legal {
  display: flex;
  gap: 20px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-tertiary);
}


/* ═══════════════════════════════════════════════
   UTILITIES
   ═══════════════════════════════════════════════ */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--accent);
  display: inline-block;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

@keyframes slideUp {
  to { transform: translateY(0); }
}

.text-primary { color: var(--primary); }
.text-accent { color: var(--primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.font-mono { font-family: var(--font-mono); }

.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }


/* ═══════════════════════════════════════════════
   EMAIL FORM (Buttondown waitlist)
   ═══════════════════════════════════════════════ */

.email-form {
  display: flex;
  max-width: 480px;
}
.email-input {
  flex: 1;
  min-width: 0;
  padding: 16px 20px;
  background: var(--white-05);
  border: 1px solid var(--white-12);
  border-right: none;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.email-input::placeholder {
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}
.email-input:focus {
  border-color: var(--accent-40);
  box-shadow: 0 0 0 2px var(--accent-10);
}
.email-btn {
  padding: 16px 32px;
  background: var(--accent);
  border: none;
  color: var(--bg);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
  white-space: nowrap;
}
.email-btn:hover {
  background: var(--accent-end);
  transform: translateY(-1px);
}
.email-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.email-btn--loading {
  pointer-events: none;
  opacity: 0.7;
}
.form-note {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text);
  margin-top: 16px;
}
.form-confirm {
  padding: 20px 24px;
  background: var(--accent-10);
  border: 1px solid var(--accent-30);
  font-family: var(--font-mono);
  font-size: 14px;
  max-width: 480px;
}


/* ═══════════════════════════════════════════════
   USP BAR
   ═══════════════════════════════════════════════ */

.usp-rows {
  margin-top: 32px;
}
.usp-row {
  display: flex;
  align-items: baseline;
  gap: 48px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}
.usp-row:first-child {
  border-top: 1px solid var(--border);
}
.usp-row-left {
  flex-shrink: 0;
  width: 280px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.usp-row-right {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}
.usp-value {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  letter-spacing: 0.04em;
}
.usp-label {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
}
.usp-row--featured {
  background: var(--accent-04);
  margin: 0 -24px;
  padding: 24px 24px;
  border-color: var(--accent-12);
}
.usp-row--featured + .usp-row {
  border-top: none;
}
.usp-row--featured .usp-label {
  font-size: 20px;
}


/* ═══════════════════════════════════════════════
   TRUST STRIP
   ═══════════════════════════════════════════════ */

.trust-strip {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text);
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}


/* ═══════════════════════════════════════════════
   TABLE HIGHLIGHTS
   ═══════════════════════════════════════════════ */

.eco-table thead th.highlight {
  background: var(--accent-06);
  color: var(--primary);
}
.eco-table tbody td.highlight {
  background: var(--accent-04);
}


/* ═══════════════════════════════════════════════
   USP FEATURED ITEM
   ═══════════════════════════════════════════════ */

/* USP featured override is in .usp-rows block above */


/* ═══════════════════════════════════════════════
   TCO CALLOUT BOX
   ═══════════════════════════════════════════════ */

.tco-callout {
  margin-top: 32px;
}
.tco-callout-inner {
  background: var(--accent-04);
  border: 1px solid var(--accent-12);
  border-radius: var(--radius-lg);
  padding: 32px 40px;
}
.tco-comparison {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
}
.tco-col {
  text-align: center;
  flex: 1;
}
.tco-col-label {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}
.tco-col-value {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--text-tertiary);
}
.tco-col-value--highlight {
  color: var(--primary);
  font-size: 32px;
}
.tco-vs {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-tertiary);
  padding-top: 20px;
}
.tco-callout-note {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-align: center;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--accent-12);
}

@media (max-width: 768px) {
  .tco-comparison {
    flex-direction: column;
    gap: 16px;
  }
  .tco-vs {
    padding-top: 0;
  }
  .tco-callout-inner {
    padding: 24px 20px;
  }
}


/* ═══════════════════════════════════════════════
   DEMO VIDEO + WHO IT'S FOR (SIDE-BY-SIDE)
   ═══════════════════════════════════════════════ */

.demo-who-row {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 40px;
  align-items: start;
}
.demo-who-video {
  aspect-ratio: 9 / 16;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #000;
}
.demo-who-video iframe {
  width: 100%;
  height: 100%;
  display: block;
}
.demo-who-text {
  max-width: 640px;
}

/* ── Benefits list ── */
.benefits-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.benefit-item {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-family: var(--font-body);
  font-size: 22px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.35;
}
.benefit-marker {
  color: var(--accent);
  font-weight: 600;
  flex-shrink: 0;
  font-size: 24px;
}


/* ═══════════════════════════════════════════════
   PLATFORM ICONS
   ═══════════════════════════════════════════════ */

.platform-icons {
  display: flex;
  gap: 56px;
  justify-content: center;
  margin-bottom: 28px;
}
.platform-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-tertiary);
  transition: color 0.2s ease;
}
.platform-icon:hover {
  color: var(--text-secondary);
}
.platform-icon svg {
  width: 36px;
  height: 36px;
}
.platform-icon span {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.04em;
}

/* ═══════════════════════════════════════════════
   APP PREVIEW EMBED
   ═══════════════════════════════════════════════ */

.app-preview {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg);
}

/* ═══════════════════════════════════════════════
   CLOSING CTA
   ═══════════════════════════════════════════════ */

.section--closing-cta {
  text-align: center;
}
.section--closing-cta .email-form {
  margin: 0 auto 16px;
}
.section--closing-cta .form-note {
  text-align: center;
}


/* ═══════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════ */

.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }


/* ═══════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════ */

/* Reduced-motion: disable animations */
@media (prefers-reduced-motion: reduce) {
  .fade-up { opacity: 1; transform: none; transition: none; }
  .hero-line span { transform: none; }
  .hero-sub, .hero-products, .hero-free { opacity: 1; }
}

@media (max-width: 900px) {
  .steps { grid-template-columns: 1fr; gap: 24px; }
  .tiers { grid-template-columns: 1fr; }
  .features-list { grid-template-columns: 1fr; }
  .eco-table { font-size: 14px; }
}

@media (max-width: 768px) {
  .nav {
    padding: 0 20px;
  }
  .nav-links {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-toggle {
    display: block;
  }

  .section {
    padding: 60px 20px;
  }
  .section--hero {
    padding-top: 80px;
    min-height: auto;
  }
  .hero-title {
    font-size: 36px;
  }
  .hero-products {
    grid-template-columns: 1fr;
    max-width: 100%;
  }
  .hero-product {
    padding: 24px 20px;
  }
  .hero-product-price {
    font-size: 24px;
  }

  .product-hero {
    padding-top: 100px;
  }
  .product-hero-title {
    font-size: 32px;
  }
  .product-hero-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }
  .feature-card {
    padding: 24px 20px;
  }

  .specs-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .validation-box {
    grid-template-columns: 1fr;
    padding: 28px;
  }
  .validation-chart-row {
    grid-template-columns: 1fr;
  }
  .demo-who-row {
    grid-template-columns: 1fr;
  }
  .demo-who-video {
    max-width: 300px;
    margin: 0 auto;
  }
  .app-preview {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .bottom-cta {
    flex-direction: column;
    text-align: center;
    gap: 24px;
    padding: 40px 20px;
  }
  .bottom-cta-actions {
    flex-direction: column;
    width: 100%;
  }
  .bottom-cta-actions .btn-buy,
  .bottom-cta-actions .btn-secondary {
    width: 100%;
    text-align: center;
  }

  .founder-grid {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 32px 24px;
  }
  .founder-avatar {
    margin: 0 auto;
  }

  .usp-row {
    flex-direction: column;
    gap: 8px;
  }
  .usp-row-left {
    width: 100%;
  }
  .usp-row--featured {
    margin: 0 -20px;
    padding: 24px 20px;
  }
  .email-form { flex-direction: column; gap: 8px; }
  .email-input { border-right: 1px solid var(--white-12); }

  .faq-question {
    font-size: 15px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .product-ctas {
    flex-direction: column;
  }
  .product-ctas .btn-buy,
  .product-ctas .btn-secondary {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 400px) {
  .hero-title { font-size: 28px; }
  .hero-product-name { font-size: 15px; }
  .product-hero-title { font-size: 28px; }
  .specs-grid { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════════
   PRODUCT COLOR CODING  (unified_color_spec_v2.0)
   Green = KineForce
   All text/button colors use WCAG AA-safe variants.
   ═══════════════════════════════════════════════ */

/* ── Home: hero product card hover (decorative border, no text contrast req) ── */
.hero-product[data-product="force"]:hover { border-color: var(--product-force); }

/* ── KineForce page (body.page-force) ── */
body.page-force .product-hero-label       { color: var(--product-force); }         /* Green 300 — ~7.0:1 on dark */
body.page-force .btn-buy                  { background: var(--product-force); color: #0A0A0A; }  /* dark text on green = 7.9:1 AAA */
body.page-force .btn-buy:hover            { background: #0f9962; color: #0A0A0A; }
body.page-force .feature-card:hover       { border-color: var(--product-force); }  /* decorative */
body.page-force .stat-value               { color: var(--product-force); }         /* Green 300 — ~7.0:1 on dark */
body.page-force .nav-link--active         { color: var(--product-force); }
body.page-force .nav-buy                  { background: var(--product-force); color: #0A0A0A; }
body.page-force .nav-buy:hover            { background: #0f9962; color: #0A0A0A; }
body.page-force .bottom-cta .btn-buy      { background: var(--product-force); color: #0A0A0A; }
body.page-force .bottom-cta .btn-buy:hover { background: #0f9962; color: #0A0A0A; }

/* ── LANGUAGE TOGGLE ── */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 8px;
  padding-left: 16px;
  border-left: 1px solid var(--border);
}
.lang-toggle-link {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--text-tertiary);
  transition: color 0.15s ease;
}
.lang-toggle-link:hover {
  color: var(--text);
}
.lang-toggle-link--active {
  color: var(--primary);
  font-weight: 600;
}
.lang-toggle-sep {
  font-size: 12px;
  color: var(--text-tertiary);
}

@media (max-width: 768px) {
  .lang-toggle {
    border-left: none;
    border-top: 1px solid var(--border);
    padding-left: 0;
    padding-top: 12px;
    margin-left: 0;
    margin-top: 4px;
    justify-content: center;
  }
}