:root {
  /* Colors - Premium Corporate Palette */
  --bg-dark: #0a1118;
  --bg-body: #ffffff;
  --bg-hero-white: #ffffff;

  --text-primary: #1a1a1a;
  --text-secondary: #555555;
  --text-hero-dark: #1a1a1a;
  --text-on-dark: #ffffff;

  --accent-gold: #c5a059;
  --accent-gold-hover: #b08d45;

  --border-light: #e5e5e5;
  --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);

  --font-main: 'Inter', sans-serif;
  --font-heading: 'Playfair Display', serif;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

section {
  padding: 5rem 1rem;
  max-width: 1200px;
  margin: 0 auto;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Typography */
h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

h1 {
  font-size: 3rem;
  font-weight: 700;
  color: var(--text-hero-dark);
  /* Dark text for White Hero */
}

h2 {
  font-size: 2.25rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

p.subheadline {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin-bottom: 2rem;
  font-family: var(--font-main);
}

p.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  max-width: 600px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 2rem;
  border-radius: 4px;
  /* Standard corporate radius */
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: var(--font-main);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.9rem;
}

.btn-primary {
  background-color: var(--accent-gold);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--accent-gold-hover);
  transform: translateY(-2px);
}

/* Secondary Button - Optimized for White Background */
.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--text-primary);
  margin-left: 1rem;
}

.btn-secondary:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  background-color: transparent;
}

/* Header */
header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem 0;
  z-index: 10;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  /* Light border */
}

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

.logo {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  /* Dark Logo */
  font-family: var(--font-heading);
  letter-spacing: 0.05em;
}

.nav-menu {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-menu a {
  color: var(--text-primary);
  /* Dark Links */
  font-size: 0.9rem;
  opacity: 0.8;
  font-weight: 500;
}

.nav-menu a:hover {
  opacity: 1;
  color: var(--accent-gold);
}

.nav-menu .btn-nav {
  background: var(--accent-gold);
  color: #fff;
  padding: 0.5rem 1.2rem;
  border-radius: 4px;
  opacity: 1;
}

.nav-menu .btn-nav:hover {
  background: var(--accent-gold-hover);
}

.mobile-toggle {
  display: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section - WHITE BACKGROUND */
.hero {
  padding-top: 10rem;
  padding-bottom: 8rem;
  background-color: var(--bg-hero-white);
  color: var(--text-primary);
  position: relative;
  border-bottom: 1px solid var(--accent-gold);
}

.hero-content {
  max-width: 900px;
}

/* Pillars Strip */
.pillars-strip {
  display: flex;
  justify-content: start;
  gap: 3rem;
  margin-top: 4rem;
  padding: 1.5rem 0;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  /* Dark border */
}

.pilar {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pilar i {
  color: var(--accent-gold);
  font-style: normal;
  font-size: 0.8rem;
}

/* Section 1: Concept */
.concept {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.concept-bullets li {
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  color: var(--text-secondary);
}

.concept-bullets li::before {
  content: '•';
  color: var(--accent-gold);
  font-size: 1.5rem;
  line-height: 1rem;
}

/* Section 2: Areas (Cards) */
.areas {
  background-color: #f9f9f9;
}

.grid-areas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.card {
  background: #ffffff;
  padding: 3rem 2.5rem;
  border-radius: 4px;
  border: 1px solid var(--border-light);
  border-top: 4px solid var(--accent-gold);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.03);
  transition: all 0.4s ease;
  position: relative;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(197, 160, 89, 0.15);
  border-color: rgba(197, 160, 89, 0.3);
}

.card .card-badge {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 30px;
  height: 30px;
  background: rgba(197, 160, 89, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold);
  font-size: 0.8rem;
}

.card h3 {
  color: var(--text-primary);
  margin-bottom: 2rem;
  font-size: 1.3rem;
  padding-right: 2rem;
}

.card ul {
  list-style: none;
}

.card li {
  margin-bottom: 0.8rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
  position: relative;
  padding-left: 1.5rem;
  line-height: 1.5;
}

.card li::before {
  content: '•';
  color: var(--accent-gold);
  position: absolute;
  left: 0;
  top: 0;
  font-size: 1.2rem;
  line-height: 1.5rem;
}

/* Section 3: Diagnosis (DARK THEME) */
.diagnosis {
  background: var(--bg-dark);
  /* Dark Background */
  color: var(--text-on-dark);
  /* White Text */
  border-top: none;
  border-bottom: none;
}

.diagnosis h2,
.diagnosis h3 {
  color: var(--text-on-dark);
}

.diagnosis p.section-subtitle {
  color: rgba(255, 255, 255, 0.7);
}

.risk-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background-color: rgba(197, 160, 89, 0.3);
  border: 1px solid rgba(197, 160, 89, 0.3);
  margin-top: 3rem;
}

.risk-item {
  background-color: var(--bg-dark);
  padding: 3.5rem;
  transition: background 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.risk-item:hover {
  background-color: #111b24;
}

.risk-item h3 {
  color: var(--accent-gold);
  margin-bottom: 0.8rem;
  font-size: 1.25rem;
  font-weight: 700;
}

.risk-item p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 1rem;
}

/* Section 4: Method */
.method-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-top: 4rem;
  text-align: center;
}

.step-number {
  font-size: 3.5rem;
  font-weight: 700;
  color: rgba(197, 160, 89, 0.2);
  margin-bottom: 0.5rem;
  font-family: var(--font-heading);
  transition: color 0.3s ease;
}

.step:hover .step-number {
  color: var(--accent-gold);
}

.step h4 {
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
  color: var(--text-primary);
}

.step p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Section 5: Plans */
.plans {
  background-color: #f9f9f9;
}

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

.plan-card {
  background: #ffffff;
  padding: 3rem 2rem;
  border: 1px solid var(--border-light);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
}

.plan-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-shadow);
}

.plan-card.highlight {
  border: 1px solid var(--accent-gold);
  box-shadow: 0 10px 40px rgba(197, 160, 89, 0.1);
  position: relative;
  transform: scale(1.03);
  z-index: 1;
}

.plan-card.highlight:hover {
  transform: scale(1.03) translateY(-5px);
}

.plan-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.2rem;
}

.plan-type {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 2rem;
  font-weight: 700;
}

.plan-ideal {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: 1.5rem;
  font-family: var(--font-main);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-light);
}

.plan-features li {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  display: flex;
  gap: 0.8rem;
}

.plan-features li::before {
  content: '✓';
  color: var(--accent-gold);
  font-weight: bold;
}

/* Section 6: Audience */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
  margin-top: 3rem;
}

.audience-item {
  display: flex;
  gap: 1rem;
}

.audience-item::before {
  content: '';
  display: block;
  min-width: 4px;
  background: var(--accent-gold);
}

/* Section 7: FAQ */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-light);
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 1.5rem 0;
  background: none;
  border: none;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-heading);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  color: var(--text-secondary);
}

.faq-item.active .faq-answer {
  max-height: 200px;
}

.faq-item.active .faq-answer p {
  padding-bottom: 1.5rem;
}

/* Contact */
.contact-section {
  text-align: center;
  background: #fdfdfd;
}

/* Footer */
.footer {
  background: var(--bg-dark);
  /* Dark Footer */
  color: #fff;
  padding: 4rem 1rem;
  text-align: center;
  font-size: 0.9rem;
}

.footer a {
  color: rgba(255, 255, 255, 0.6);
  margin: 0 0.5rem;
}

.footer a:hover {
  color: #fff;
}

/* Responsive */
@media (max-width: 992px) {
  .nav-menu {
    display: none;
  }

  .mobile-toggle {
    display: block;
  }

  h1 {
    font-size: 2.5rem;
  }

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

  .plans-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 3rem auto;
  }
}

@media (max-width: 768px) {
  .hero {
    text-align: left;
    padding-top: 8rem;
  }

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

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

  .method-steps {
    grid-template-columns: 1fr;
    text-align: left;
  }

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

  .btn {
    width: 100%;
    text-align: center;
    margin-left: 0;
    margin-bottom: 1rem;
  }

  .hero-cta {
    display: flex;
    flex-direction: column;
  }

  .btn-secondary {
    margin-left: 0;
  }

  .step-number {
    text-align: left;
  }
}