* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Professional color system */
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --primary-light: #3b82f6;
  --accent: #0ea5e9;
  --accent-dark: #0284c7;
  --accent-secondary: #8b5cf6;

  --bg: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #eff6ff;
  --bg-code: #1e293b;
  --text: #0f172a;
  --text-muted: #475569;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;

  --success: #10b981;
  --success-bg: #d1fae5;
  --warning: #f59e0b;
  --error: #ef4444;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "SF Mono", monospace;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  line-height: 1.6;
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header */
header {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 1rem;
  box-shadow: var(--shadow-md);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-title {
  font-size: 1.125rem;
  font-weight: 700;
}

.logo-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.05em;
}

.cta-header {
  background: var(--primary);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9375rem;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
}

.cta-header:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Hero Section */
.hero {
  padding: 7rem 0 6rem;
  position: relative;
  overflow: hidden;
  background: linear-gradient(rgba(10, 15, 25, 0.78), rgba(10, 15, 25, 0.78)), url("screenshot.gif") center / cover no-repeat;
}

.hero-content {
  max-width: 760px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--success-bg);
  color: var(--success);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

h1 {
  font-size: 3.25rem;
  font-weight: 700;
  line-height: 1.15;
  color: #ffffff;
  letter-spacing: -0.01em;
}

.hero h1 .highlight {
  background: none;
  -webkit-text-fill-color: initial;
  color: #c7d2fe;
  /* subtle enterprise accent */
}

.hero-description {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.85);
  margin-top: 1.5rem;
}

.hero-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
  margin-bottom: 2.5rem;
}

.hero-feature {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.9375rem;
  color: #ffffff;
}

.hero-feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--success);
  color: white;
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.875rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  background: var(--primary);
  color: white;
  padding: 1.125rem 2.25rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.125rem;
  transition: all 0.2s;
  box-shadow: var(--shadow-lg);
}

.hero-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.hero-cta-secondary {
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
  font-size: 1rem;
}

.hero-visual {
  background: white;
  border-radius: 5px;
  box-shadow: var(--shadow-2xl);
  border: 1px solid #fff;
  overflow: hidden;
  position: relative;
  aspect-ratio: 16 / 10;
}

.mockup-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.125rem;
  font-weight: 600;
  text-align: center;
}

/* Stats Bar */
.stats-bar {
  background: white;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 2rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Why Converters Fail Section */
.why-fail-section {
  padding: 5rem 0;
  background: var(--bg-secondary);
}

.fail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.fail-card {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  position: relative;
  transition: all 0.3s;
}

.fail-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--error);
}

.fail-number {
  position: absolute;
  top: -1rem;
  right: 2rem;
  width: 3rem;
  height: 3rem;
  background: linear-gradient(135deg, var(--error), #dc2626);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.125rem;
  box-shadow: var(--shadow-md);
}

.fail-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 1rem;
  line-height: 1.4;
  padding-right: 3rem;
}

.fail-problem {
  background: var(--error-bg);
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  font-size: 0.9375rem;
  line-height: 1.6;
}

.fail-problem strong {
  color: var(--error);
  display: block;
  margin-bottom: 0.5rem;
}

.fail-solution {
  background: var(--success-bg);
  padding: 1rem;
  border-radius: 8px;
  font-size: 0.9375rem;
  line-height: 1.6;
}

.fail-solution strong {
  color: var(--success);
  display: block;
  margin-bottom: 0.5rem;
}

/* Technical Excellence Section */
.tech-section {
  padding: 5rem 0;
  background: white;
}

.section-header {
  max-width: 800px;
  margin: 0 auto 3rem;
  text-align: center;
}

.section-eyebrow {
  display: inline-block;
  color: var(--primary);
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.75rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.tech-card {
  background: var(--bg-secondary);
  padding: 2rem;
  border-radius: 16px;
  border: 2px solid var(--border);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.tech-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  transform: scaleY(0);
  transition: transform 0.3s;
}

.tech-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-light);
}

.tech-card:hover::before {
  transform: scaleY(1);
}

.tech-header {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.tech-icon {
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  flex-shrink: 0;
  box-shadow: var(--shadow-md);
}

.tech-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.tech-subtitle {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.tech-description {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.tech-details {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.tech-detail {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.9375rem;
  color: var(--text);
}

.tech-detail::before {
  content: "→";
  color: var(--primary);
  font-weight: 700;
  flex-shrink: 0;
}

.code-snippet {
  background: var(--bg-code);
  color: #e2e8f0;
  padding: 1.25rem;
  border-radius: 10px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  overflow-x: auto;
  margin-top: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Security Section */
.security-section {
  padding: 5rem 0;
  background: white;
}

.security-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-top: 3rem;
}

.security-visual {
  background: white;
  border-radius: 20px;
  padding: 3rem;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border);
}

.security-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.security-item {
  background: white;
  padding: 1.5rem;
  border-radius: 12px;
  border-left: 4px solid var(--primary);
  box-shadow: var(--shadow-sm);
}

.security-item-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.security-item-description {
  color: var(--text-muted);
  line-height: 1.6;
}

/* Matrix Layout */
.security-matrix {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
}

/* Cards */
.security-card {
  background: white;
  padding: 4rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  text-align: center;
  position: relative;
  z-index: 1;
}

.security-card h4 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.security-card p {
  color: var(--text-muted);
  line-height: 1.6;
}

/* Floating Center Badge */
.security-center-badge {
  position: absolute;
  top: 100px;
  left: 50%;
  transform: translate(-50%, 0%);
  width: 300px;
  height: 300px;
  padding: 2.75rem 3.25rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  border-radius: 999px;
  text-align: center;
  box-shadow: var(--shadow-2xl);
  z-index: 3;
  opacity: 0.8;
}

.shield-icon {
  font-size: 2.25rem;
  margin-bottom: 0.75rem;
}

.shield-title {
  font-size: 1.375rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.shield-subtitle {
  font-size: 0.9375rem;
  opacity: 0.95;
  line-height: 1.5;
}

/* Modes Section */
.modes-section {
  padding: 5rem 0;
  background: white;
}

.modes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

/* Unified Wrapper */
.modes-wrapper {
  position: relative;
  margin-top: 4rem;
}

/* All-in-One Label */
.modes-unified-label {
  position: absolute;
  top: -1.25rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-secondary);
  padding: 0.5rem 1.25rem;
  border-radius: 999px;
  border-color: var(--primary);
  border-style: solid;
  border-width: 0.01rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.03em;
  box-shadow: var(--shadow-sm);
  z-index: 4;
  width: 260px;
  text-align: center;
}

/* Plus Signs Between Cards */
.modes-grid {
  position: relative;
}

.modes-grid::before,
.modes-grid::after {
  content: "+";
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: 8rem;
  font-weight: 800;
  color: var(--primary-light);
  opacity: 0.3;
  z-index: 4;
}

.modes-grid::before {
  left: 33%;
}

.modes-grid::after {
  left: 67.2%;
}

/* Ensure cards sit above connectors */
.mode-card {
  position: relative;
  z-index: 2;
}

.mode-card {
  background: white;
  padding: 2.5rem;
  border-radius: 16px;
  border: 2px solid var(--border);
  text-align: center;
  transition: all 0.3s;
  position: relative;
}

.mode-card::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 16px;
  padding: 2px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s;
}

.mode-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-2xl);
}

.mode-card:hover::after {
  opacity: 1;
}

.mode-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.25rem;
  box-shadow: var(--shadow-lg);
}

.mode-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text);
}

.mode-description {
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.mode-features {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  text-align: left;
}

.mode-feature {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.mode-feature::before {
  content: "✓";
  color: var(--success);
  font-weight: 700;
}

/* Video Section */
.video-section {
  padding: 5rem 0;
  background: var(--bg-secondary);
}

.video-container {
  max-width: 1000px;
  margin: 3rem auto 0;
  background: white;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  aspect-ratio: 16 / 9;
  border: 1px solid var(--border);
}

.video-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
  font-weight: 600;
}

/* Compatibility Section */
.compatibility-section {
  padding: 5rem 0;
  background: white;
}

.compatibility-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.compatibility-card {
  background: var(--bg-secondary);
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid var(--border);
}

.compatibility-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.compatibility-badge {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  padding: 0.625rem 1.25rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.9375rem;
}

.compatibility-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.compatibility-tag {
  background: white;
  color: var(--text);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-family: var(--font-mono);
  border: 1px solid var(--border);
  font-weight: 500;
}

/* CTA Section */
.cta-section {
  padding: 5rem 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></svg>');
  opacity: 0.3;
}

.cta-section h2 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  position: relative;
}

.cta-section p {
  font-size: 1.375rem;
  opacity: 0.95;
  margin-bottom: 2.5rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: white;
  color: var(--primary);
  padding: 1.25rem 3rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.25rem;
  transition: all 0.2s;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  position: relative;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

/* Footer */
footer {
  background: var(--text);
  color: var(--text-light);
  padding: 2rem 0;
  text-align: center;
}

footer p {
  font-size: 0.9375rem;
}

/* Responsive */
@media (max-width: 1024px) {
  .logo-icon {
    display: none;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero::before {
    display: none;
  }

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

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

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

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

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

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

  .modes-grid::before,
  .modes-grid::after {
    display: none;
  }

  .mode-feature {
    display: grid;
    text-align: center;
    font-size: 1rem;
  }

  .security-matrix {
    grid-template-columns: 1fr;
    padding-top: 0;
    margin-top: 3rem;
  }

  .security-center-badge {
    position: static;
    transform: none;
    width: 100%;
    border-radius: 24px;
    margin-bottom: 2rem;
  }

  .security-card {
    padding: 3rem;
  }
}

/* FAQ Section */
.faq-section {
  padding: 5rem 0;
  background: var(--bg-secondary);
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: white;
  border-radius: 14px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all 0.2s;
}

.faq-item[open] {
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.faq-item summary {
  cursor: pointer;
  padding: 1.5rem 1.75rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-item summary::after {
  content: "▾";
  font-size: 1.25rem;
  color: var(--primary);
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  transform: rotate(180deg);
}

.faq-content {
  padding: 0 1.75rem 1.75rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.faq-content p {
  margin-bottom: 0.75rem;
}

.faq-content ul,
.faq-content ol {
  padding-left: 1.25rem;
  margin-bottom: 0.75rem;
}

.faq-content li {
  margin-bottom: 0.5rem;
}

@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .hero-features {
    grid-template-columns: 1fr;
  }

  .cta-section h2 {
    font-size: 2rem;
  }
}