/* ===========================
   Solus — Global Stylesheet
   =========================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-dark:    #0F1117;
  --bg-mid:     #161B27;
  --bg-light:   #F7F8FA;
  --bg-white:   #FFFFFF;
  --blue:       #2563EB;
  --blue-dark:  #1D4ED8;
  --blue-light: #3B82F6;
  --text-primary: #0F1117;
  --text-muted:   #6B7280;
  --text-faint:   #9CA3AF;
  --border:       #E5E7EB;
  --border-dark:  #1E2535;
  --radius:       8px;
  --radius-lg:    12px;
  --shadow:       0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md:    0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg:    0 10px 15px rgba(0,0,0,.1), 0 4px 6px rgba(0,0,0,.05);
  --font-sans:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif:   Georgia, 'Times New Roman', serif;
  --max-w:        1120px;
  --max-w-sm:     720px;
}

html { scroll-behavior: smooth; }

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 { line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: 1.25rem; }
p { color: var(--text-muted); }

.lead { font-size: 1.125rem; line-height: 1.7; }
.label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
}

/* ---- Layout ---- */
.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.container-sm { width: 100%; max-width: var(--max-w-sm); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-sm { padding: 56px 0; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .15s ease;
  white-space: nowrap;
  text-decoration: none;
  font-family: var(--font-sans);
}
.btn-primary {
  background: var(--blue);
  color: #fff;
}
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(37,99,235,.3); }
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border);
}
.btn-secondary:hover { border-color: #9CA3AF; background: #F9FAFB; }
.btn-ghost {
  background: transparent;
  color: rgba(255,255,255,.85);
  border: 1.5px solid rgba(255,255,255,.2);
}
.btn-ghost:hover { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.4); }
.btn-lg { padding: 14px 28px; font-size: 1rem; border-radius: var(--radius-lg); }
.btn-sm { padding: 8px 16px; font-size: 0.875rem; }

/* ---- Navigation ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  height: 64px;
  gap: 32px;
}
.nav-logo {
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-shrink: 0;
}
.nav-logo .logo-name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}
.nav-logo .logo-by {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-variant: small-caps;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}
.nav-links a {
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color .15s, background .15s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); background: var(--bg-light); }
.nav-cta { flex-shrink: 0; }
.nav-mobile-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  margin: 4px 0;
  transition: all .2s;
}

/* dark nav variant */
.nav-dark {
  background: rgba(15,17,23,.92);
  border-bottom-color: var(--border-dark);
}
.nav-dark .nav-logo .logo-name { color: #fff; }
.nav-dark .nav-links a { color: rgba(255,255,255,.6); }
.nav-dark .nav-links a:hover { color: #fff; background: rgba(255,255,255,.08); }
.nav-dark .nav-mobile-toggle span { background: #fff; }

/* ---- Footer ---- */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,.6);
  padding: 56px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 200px repeat(3, 1fr);
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border-dark);
}
.footer-brand .logo-name { font-family: var(--font-serif); font-size: 1.1rem; color: #fff; }
.footer-brand .logo-by { font-size: 0.6rem; letter-spacing: .1em; text-transform: uppercase; color: rgba(255,255,255,.35); }
.footer-brand p { margin-top: 10px; font-size: 0.875rem; line-height: 1.6; color: rgba(255,255,255,.5); }
.footer-col h4 { font-size: 0.8125rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: rgba(255,255,255,.4); margin-bottom: 14px; }
.footer-col a {
  display: block;
  font-size: 0.9375rem;
  color: rgba(255,255,255,.55);
  margin-bottom: 10px;
  transition: color .15s;
}
.footer-col a:hover { color: #fff; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  font-size: 0.875rem;
  color: rgba(255,255,255,.35);
}
.footer-bottom a { color: rgba(255,255,255,.45); }
.footer-bottom a:hover { color: rgba(255,255,255,.7); }

/* ---- Hero (Dark) ---- */
.hero-dark {
  background: var(--bg-dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.hero-dark::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37,99,235,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.hero-dark::after {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse at center, rgba(37,99,235,.15) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(37,99,235,.15);
  border: 1px solid rgba(37,99,235,.3);
  padding: 5px 12px;
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--blue-light);
  margin-bottom: 24px;
}
.hero-eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--blue-light); }
.hero-dark h1 { color: #fff; margin-bottom: 20px; }
.hero-dark .lead { color: rgba(255,255,255,.65); max-width: 560px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }

/* ---- Social Proof Bar ---- */
.proof-bar {
  background: var(--bg-mid);
  border-top: 1px solid var(--border-dark);
  border-bottom: 1px solid var(--border-dark);
  padding: 14px 0;
}
.proof-bar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}
.proof-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: rgba(255,255,255,.5);
}
.proof-item svg { width: 14px; height: 14px; color: var(--blue-light); flex-shrink: 0; }
.proof-divider { width: 1px; height: 16px; background: var(--border-dark); }

/* ---- Feature Cards ---- */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: box-shadow .2s, border-color .2s;
}
.feature-card:hover { box-shadow: var(--shadow-lg); border-color: #D1D5DB; }
.feature-icon {
  width: 44px;
  height: 44px;
  background: rgba(37,99,235,.08);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--blue);
}
.feature-icon svg { width: 22px; height: 22px; }
.feature-card h3 { margin-bottom: 8px; font-size: 1.0625rem; }
.feature-card p { font-size: 0.9375rem; }

/* ---- How It Works ---- */
.steps { display: flex; flex-direction: column; gap: 0; }
.step { display: flex; gap: 24px; align-items: flex-start; padding: 28px 0; border-bottom: 1px solid var(--border); }
.step:last-child { border-bottom: none; }
.step-num {
  width: 36px;
  height: 36px;
  background: var(--blue);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}
.step h3 { margin-bottom: 6px; }
.step p { font-size: 0.9375rem; }

/* ---- Callout Sections ---- */
.callout-dark {
  background: var(--bg-dark);
  color: #fff;
  padding: 80px 0;
}
.callout-dark h2 { color: #fff; margin-bottom: 16px; }
.callout-dark p { color: rgba(255,255,255,.6); max-width: 520px; margin-bottom: 28px; }
.callout-light { background: var(--bg-light); padding: 80px 0; }
.callout-light h2 { margin-bottom: 16px; }
.callout-light p { max-width: 520px; margin-bottom: 28px; }

/* ---- Pricing ---- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.plan-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
}
.plan-card.featured {
  border-color: var(--blue);
  box-shadow: 0 0 0 1px var(--blue), var(--shadow-lg);
  position: relative;
}
.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--blue);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 3px 12px;
  border-radius: 100px;
  white-space: nowrap;
}
.plan-name { font-size: 0.875rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--text-muted); margin-bottom: 8px; }
.plan-price { font-size: 2.5rem; font-weight: 700; letter-spacing: -0.03em; color: var(--text-primary); line-height: 1; }
.plan-price span { font-size: 1.25rem; font-weight: 500; color: var(--text-muted); }
.plan-period { font-size: 0.875rem; color: var(--text-faint); margin: 4px 0 16px; }
.plan-desc { font-size: 0.9375rem; color: var(--text-muted); margin-bottom: 24px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.plan-features { flex: 1; margin-bottom: 24px; }
.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--text-muted);
  padding: 7px 0;
}
.plan-features li svg { width: 16px; height: 16px; color: #10B981; flex-shrink: 0; margin-top: 3px; }
.plan-features li.off svg { color: var(--text-faint); }
.plan-features li.off { color: var(--text-faint); }

/* Comparison Table */
.compare-table { width: 100%; border-collapse: collapse; margin-top: 56px; }
.compare-table th, .compare-table td {
  padding: 14px 16px;
  text-align: left;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--border);
}
.compare-table th { font-weight: 600; font-size: 0.8125rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-faint); }
.compare-table td:first-child { color: var(--text-primary); font-weight: 500; }
.compare-table td:not(:first-child) { text-align: center; color: var(--text-muted); }
.compare-table tbody tr:hover { background: var(--bg-light); }
.check { color: #10B981; }
.cross { color: #D1D5DB; }

/* ---- FAQ ---- */
.faq { max-width: 680px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  gap: 16px;
}
.faq-q svg { flex-shrink: 0; transition: transform .2s; }
.faq-q.open svg { transform: rotate(45deg); }
.faq-a { display: none; padding-bottom: 20px; }
.faq-a p { font-size: 0.9375rem; }
.faq-a.open { display: block; }

/* ---- Download Page ---- */
.download-hero { text-align: center; padding: 80px 0 64px; }
.download-hero h1 { margin-bottom: 16px; }
.download-hero .lead { margin: 0 auto 32px; max-width: 500px; }
.version-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 4px 12px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.install-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin: 40px 0; }
.install-step {
  text-align: center;
  padding: 28px 20px;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
}
.install-step .step-icon {
  width: 52px;
  height: 52px;
  background: rgba(37,99,235,.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  color: var(--blue);
}
.install-step .step-icon svg { width: 26px; height: 26px; }
.install-step h3 { margin-bottom: 6px; font-size: 1rem; }
.install-step p { font-size: 0.875rem; }
.warning-box {
  background: #FFF9F0;
  border: 1px solid #FDE68A;
  border-left: 3px solid #F59E0B;
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 24px 0;
}
.warning-box p { color: #92400E; font-size: 0.9375rem; }
.warning-box strong { color: #78350F; }
.sys-req { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 24px 0; }
.sys-req-item {
  background: var(--bg-light);
  border-radius: var(--radius);
  padding: 16px 20px;
}
.sys-req-item dt { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--text-faint); margin-bottom: 4px; }
.sys-req-item dd { font-size: 0.9375rem; font-weight: 500; color: var(--text-primary); }

/* ---- Verify Page ---- */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 64px 32px;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  background: var(--bg-light);
  position: relative;
}
.drop-zone.drag-over { border-color: var(--blue); background: rgba(37,99,235,.04); }
.drop-zone input[type=file] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.drop-icon {
  width: 56px;
  height: 56px;
  background: rgba(37,99,235,.1);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--blue);
}
.drop-icon svg { width: 28px; height: 28px; }
.drop-zone h3 { margin-bottom: 8px; font-size: 1.125rem; }
.drop-zone p { font-size: 0.9375rem; color: var(--text-faint); }

.verify-result { margin-top: 32px; display: none; }
.verify-result.show { display: block; }

.verdict {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 700;
  padding: 12px 24px;
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
}
.verdict.valid { background: #D1FAE5; color: #065F46; }
.verdict.tampered { background: #FEE2E2; color: #7F1D1D; }
.verdict.partial { background: #FEF3C7; color: #78350F; }
.verdict.error { background: #F3F4F6; color: #374151; }

.verify-meta { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-bottom: 24px; }
.verify-meta-item { background: var(--bg-light); border-radius: var(--radius); padding: 14px 16px; }
.verify-meta-item dt { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--text-faint); margin-bottom: 4px; }
.verify-meta-item dd { font-size: 0.9375rem; font-weight: 500; color: var(--text-primary); word-break: break-all; }

.check-list { display: flex; flex-direction: column; gap: 8px; }
.check-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--bg-light);
  border-radius: var(--radius);
  font-size: 0.9375rem;
}
.check-row span:first-child { color: var(--text-primary); }
.check-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}
.badge-pass { background: #D1FAE5; color: #065F46; }
.badge-fail { background: #FEE2E2; color: #991B1B; }
.badge-skip { background: #F3F4F6; color: #6B7280; }
.badge-warn { background: #FEF3C7; color: #92400E; }

.fingerprint {
  font-family: 'Courier New', monospace;
  font-size: 0.8125rem;
  color: var(--text-muted);
  background: var(--bg-dark);
  color: rgba(255,255,255,.7);
  padding: 12px 16px;
  border-radius: var(--radius);
  word-break: break-all;
  letter-spacing: .03em;
}
.privacy-note {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 0.875rem;
  color: var(--text-faint);
}
.privacy-note svg { width: 14px; height: 14px; color: #10B981; flex-shrink: 0; }

/* ---- Mockup UI ---- */
.mockup-window {
  background: #1A1F2E;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,.4);
}
.mockup-titlebar {
  background: #242938;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.mockup-dot { width: 12px; height: 12px; border-radius: 50%; }
.mockup-dot.red { background: #FF5F56; }
.mockup-dot.yellow { background: #FFBD2E; }
.mockup-dot.green { background: #27C93F; }
.mockup-titlebar .title { flex: 1; text-align: center; font-size: 0.8125rem; color: rgba(255,255,255,.4); }
.mockup-body { padding: 20px; }
.mockup-row { display: flex; gap: 16px; margin-bottom: 12px; align-items: center; }
.mockup-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  flex-shrink: 0;
}
.mockup-bar {
  height: 10px;
  border-radius: 5px;
  background: rgba(255,255,255,.1);
}
.mockup-green { background: rgba(16,185,129,.6) !important; }
.mockup-yellow { background: rgba(245,158,11,.6) !important; }
.verify-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  background: rgba(255,255,255,.04);
  border-radius: 6px;
  margin-bottom: 8px;
}
.verify-row span { font-size: 0.8125rem; color: rgba(255,255,255,.6); }
.verify-pill {
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}
.pill-valid { background: rgba(16,185,129,.2); color: #10B981; }
.pill-partial { background: rgba(245,158,11,.2); color: #F59E0B; }
.pill-tampered { background: rgba(239,68,68,.2); color: #EF4444; }

/* ---- List Styles ---- */
.check-list-simple li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
}
.check-list-simple li svg { width: 16px; height: 16px; color: #10B981; flex-shrink: 0; margin-top: 3px; }

/* ---- About / Legal ---- */
.prose h2 { font-size: 1.5rem; margin: 40px 0 16px; }
.prose h3 { font-size: 1.125rem; margin: 28px 0 10px; }
.prose p { margin-bottom: 16px; font-size: 0.9375rem; line-height: 1.75; }
.prose ul { margin: 12px 0 20px 20px; }
.prose ul li { font-size: 0.9375rem; line-height: 1.75; margin-bottom: 6px; list-style: disc; color: var(--text-muted); }
.prose a { color: var(--blue); text-decoration: underline; text-decoration-color: rgba(37,99,235,.3); }
.prose a:hover { text-decoration-color: var(--blue); }
.disclaimer {
  background: #FFF9F0;
  border: 1px solid #FDE68A;
  border-radius: var(--radius);
  padding: 14px 18px;
  font-size: 0.875rem;
  color: #92400E;
  margin: 24px 0;
}

/* ---- Team / About ---- */
.person-card {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
}
.person-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue) 0%, #7C3AED 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
  font-family: var(--font-serif);
}
.person-info h3 { margin-bottom: 4px; }
.person-info .role { color: var(--blue); font-size: 0.875rem; font-weight: 600; margin-bottom: 10px; }
.person-info p { font-size: 0.9375rem; }

/* ---- Tech Stack ---- */
.tech-stack { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 20px; }
.tech-tag {
  background: rgba(37,99,235,.08);
  border: 1px solid rgba(37,99,235,.2);
  color: var(--blue);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
}

/* ---- Utilities ---- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mt-8 { margin-top: 32px; }
.mt-12 { margin-top: 48px; }
.mt-16 { margin-top: 64px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mb-8 { margin-bottom: 32px; }
.mb-12 { margin-bottom: 48px; }
.gap-12 { gap: 48px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.full-w { width: 100%; }

/* ---- CTA Section ---- */
.cta-section { background: var(--bg-dark); padding: 80px 0; text-align: center; }
.cta-section h2 { color: #fff; margin-bottom: 12px; }
.cta-section p { color: rgba(255,255,255,.55); margin-bottom: 28px; font-size: 1.0625rem; }
.cta-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .install-steps { grid-template-columns: 1fr; max-width: 400px; margin: 40px auto; }
  .sys-req { grid-template-columns: 1fr 1fr; }
  .verify-meta { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-mobile-toggle { display: block; }
  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    gap: 4px;
    z-index: 99;
  }
  .nav-dark .nav-links.mobile-open { background: var(--bg-dark); border-bottom-color: var(--border-dark); }
  .features-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .grid-2 { grid-template-columns: 1fr; }
  .person-card { flex-direction: column; }
  .proof-divider { display: none; }
  .sys-req { grid-template-columns: 1fr; }
}