:root {
  /* Brand Colors — light theme with Google blue accents */
  --bg-color: #ffffff;
  --card-bg: #f8f9fa;
  --accent-teal: #1a73e8;
  --accent-indigo: #4285f4;
  --accent-glow: rgba(26, 115, 232, 0.08);
  --accent-glow-strong: rgba(26, 115, 232, 0.16);
  --text-main: #1a1a1a;
  --text-muted: #5f6368;
  --border-color: #e0e0e0;
  --border-active: rgba(26, 115, 232, 0.5);

  /* Typography — editorial serif + clean sans */
  --font-display: 'Newsreader', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing Grid (4px base) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;

  /* Section Padding (generous) */
  --section-padding: clamp(64px, 10vw, 128px);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-pill: 9999px;

  /* Motion */
  --transition-speed: 350ms;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  letter-spacing: -0.01em;
}

/* Typography Base */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.15;
  margin-bottom: var(--space-4);
  color: var(--text-main);
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.75rem, 6vw, 4.75rem);
  font-weight: 400;
  font-style: italic;
  background: linear-gradient(135deg, var(--text-main) 20%, var(--accent-teal) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 400; }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); font-family: var(--font-body); font-weight: 600; }

/* Rule: No centered body text */
p, li {
  text-align: left;
  margin-bottom: var(--space-4);
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
}

/* =========================================
   Button Component
   ========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent-teal), var(--accent-indigo));
  color: #ffffff;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.875rem;
  text-decoration: none;
  transition: opacity var(--transition-speed) ease-out,
              transform var(--transition-speed) ease-out,
              box-shadow var(--transition-speed) ease-out;
  border: none;
  cursor: pointer;
  letter-spacing: 0;
  position: relative;
}

.btn:hover {
  opacity: 0.92;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(26, 115, 232, 0.25);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.btn-secondary:hover {
  border-color: var(--accent-teal);
  color: var(--accent-teal);
  box-shadow: 0 2px 8px rgba(26, 115, 232, 0.1);
}

/* =========================================
   Card Component
   ========================================= */
.card {
  background-color: var(--card-bg);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  border: 1px solid var(--border-color);
  text-align: left;
  transition: border-color var(--transition-speed) ease,
              box-shadow var(--transition-speed) ease,
              transform var(--transition-speed) ease;
}

.card:hover {
  border-color: var(--border-active);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08), 0 0 20px var(--accent-glow);
  transform: translateY(-1px);
}

/* Section Wrapper */
section, header, footer {
  padding: var(--section-padding) 5%;
  max-width: 1200px;
  margin: 0 auto;
}

/* =========================================
   Scroll Reveal Utilities
   ========================================= */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-speed) ease-out,
              transform var(--transition-speed) ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children within a reveal */
.reveal.active .card:nth-child(1) { transition-delay: 0ms; }
.reveal.active .card:nth-child(2) { transition-delay: 80ms; }
.reveal.active .card:nth-child(3) { transition-delay: 160ms; }


/* =========================================
   Section Specific Styles
   ========================================= */

/* 1. Sticky Nav */
.header-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: var(--space-4) 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 100;
  border-bottom: 1px solid var(--border-color);
  max-width: 100%;
}

.brand {
  font-family: var(--font-body);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-logo {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: var(--space-8);
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--transition-speed) ease;
  font-weight: 400;
}

.nav-links a:hover {
  color: var(--text-main);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  cursor: pointer;
}

/* Nav item with dropdown */
.nav-item {
  position: relative;
}

.nav-item > a {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--transition-speed) ease;
  font-weight: 400;
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

.nav-item > a:hover,
.nav-item.active > a {
  color: var(--text-main);
}

.nav-chevron {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-speed) ease;
}

.nav-item.active .nav-chevron {
  transform: rotate(180deg);
}

/* Dropdown Panel */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 16px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  min-width: 480px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1), 0 2px 8px rgba(0, 0, 0, 0.05);
  opacity: 0;
  visibility: hidden;
  transition: opacity 200ms ease, visibility 200ms ease;
  z-index: 200;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-6);
}

.nav-item.active .nav-dropdown {
  opacity: 1;
  visibility: visible;
}

.dropdown-category h4 {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: none;
}

.dropdown-category ul {
  list-style: none;
}

.dropdown-category li {
  margin-bottom: var(--space-2);
}

.dropdown-category a {
  font-size: 0.875rem;
  color: var(--text-main);
  font-weight: 400;
  transition: color var(--transition-speed) ease;
  display: block;
  padding: 2px 0;
}

.dropdown-category a:hover {
  color: var(--accent-teal);
}

/* Subscribe Button */
.btn-subscribe {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-teal);
  color: #ffffff;
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.875rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.btn-subscribe:hover {
  background: #1557b0;
  box-shadow: 0 2px 8px rgba(26, 115, 232, 0.3);
}

/* Mobile Nav */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-color);
    padding: var(--space-6) 5%;
    border-bottom: 1px solid var(--border-color);
    gap: var(--space-4);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  }

  .nav-links.active {
    display: flex;
  }

  .mobile-menu-btn {
    display: block;
  }

  .nav-dropdown {
    position: static;
    transform: none;
    min-width: auto;
    box-shadow: none;
    border: none;
    padding: var(--space-4) 0 0;
    grid-template-columns: 1fr;
  }
}

/* Page Header (sub-pages) */
.page-header {
  padding-top: 140px;
  padding-bottom: var(--space-8);
  text-align: left;
}

.page-header h1 {
  max-width: 600px;
}

.page-header p {
  max-width: 540px;
  font-size: 1.0625rem;
  color: var(--text-muted);
}

/* 2. Hero */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  padding-top: 120px;
  overflow: hidden;
}

/* Hero ambient glow */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 55% at 50% -5%, rgba(26, 115, 232, 0.08) 0%, transparent 65%),
    radial-gradient(ellipse 40% 40% at 85% 85%, rgba(66, 133, 244, 0.05) 0%, transparent 55%);
  z-index: 0;
  pointer-events: none;
}

/* Subtle grid texture */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(26, 115, 232, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 115, 232, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
  z-index: 0;
  pointer-events: none;
}

.hero > div {
  position: relative;
  z-index: 2;
}

.hero h1 {
  max-width: 820px;
}

.hero p {
  text-align: center;
  max-width: 540px;
  margin: var(--space-6) auto var(--space-8);
  font-size: 1.0625rem;
  color: var(--text-muted);
}

.hero-ctas {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
}

/* Background Particle Canvas */
#particles-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  opacity: 0.35;
}

/* 375px breakpoint */
@media (max-width: 375px) {
  section {
    padding: var(--space-12) 5%;
  }

  .hero-ctas {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
  }
}

/* =========================================
   3. Logo Ticker
   ========================================= */
.logo-ticker {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
  overflow: hidden;
  border-bottom: 1px solid var(--border-color);
}
.ticker-wrapper {
  overflow: hidden;
  white-space: nowrap;
  position: relative;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}
.ticker-track {
  display: inline-flex;
  gap: var(--space-12);
  animation: scroll-ticker 30s linear infinite;
}
.ticker-track:hover {
  animation-play-state: paused;
}
.logo-item {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  opacity: 0.45;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  transition: opacity var(--transition-speed), color var(--transition-speed);
  cursor: default;
}
.logo-item:hover {
  opacity: 1;
  color: var(--accent-teal);
}
@keyframes scroll-ticker {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(-50% - (var(--space-12) / 2))); }
}

/* =========================================
   4. Animated Metrics
   ========================================= */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
}
.metric-card {
  border-left: 2px solid var(--accent-teal);
  padding-left: var(--space-6);
  position: relative;
}
.metric-card::before {
  content: '';
  position: absolute;
  left: -1px;
  top: 0;
  height: 100%;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-teal), var(--accent-indigo));
  border-radius: 2px;
}
.metric-number {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 400;
  color: var(--accent-teal);
  line-height: 1;
  letter-spacing: -0.03em;
}
.metric-label {
  color: var(--text-muted);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: var(--space-2);
}
@media (max-width: 768px) {
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }
}

/* =========================================
   5. Problem Statement & Shared Section Intro
   ========================================= */
.section-intro {
  margin-bottom: var(--space-12);
  max-width: 600px;
}
.section-intro h2 {
  font-style: italic;
}
.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}
.problem-card h3 {
  font-size: 1.125rem;
  color: var(--text-main);
  margin-bottom: var(--space-2);
}
.problem-card p {
  margin-bottom: 0;
  font-size: 0.875rem;
}

/* =========================================
   6. Products Layout
   ========================================= */
.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}
.featured-product {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, rgba(26, 115, 232, 0.04) 0%, rgba(66, 133, 244, 0.03) 100%);
  border-color: rgba(26, 115, 232, 0.25);
  position: relative;
  overflow: hidden;
}
.featured-product::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-teal), var(--accent-indigo));
}
.featured-product .label {
  margin-bottom: var(--space-2);
}
.product-card h3 {
  font-size: 1.375rem;
  margin-bottom: var(--space-2);
}
.product-card p {
  font-size: 0.875rem;
}
@media (max-width: 768px) {
  .products-grid {
    grid-template-columns: 1fr;
  }
}

/* =========================================
   7. How It Works
   ========================================= */
.steps-container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  position: relative;
}
.step-card {
  flex: 1;
  position: relative;
  z-index: 2;
}
.step-number {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 400;
  font-style: italic;
  background: linear-gradient(135deg, var(--accent-teal), var(--accent-indigo));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-4);
  display: inline-block;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: var(--space-2);
}
.step-card h3 {
  font-size: 1.125rem;
}
.step-card p {
  font-size: 0.875rem;
}
.step-connector {
  flex-grow: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--accent-teal), var(--accent-indigo));
  opacity: 0.3;
  margin-top: 1.75rem;
  max-width: 50px;
}
@media (max-width: 768px) {
  .steps-container {
    flex-direction: column;
    gap: var(--space-8);
  }
  .step-connector {
    display: none;
  }
}

/* =========================================
   8. Featured Case Study
   ========================================= */
.featured-card {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-12);
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}
.featured-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 3px; height: 100%;
  background: linear-gradient(180deg, var(--accent-teal), var(--accent-indigo));
}
.label.uppercase {
  font-size: 0.6875rem;
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-teal);
  font-weight: 600;
  display: block;
  margin-bottom: var(--space-4);
}
.featured-metrics {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  border-left: 1px solid var(--border-color);
  padding-left: var(--space-8);
}
.metric-block h4 {
  font-size: 2.25rem;
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--accent-teal);
  margin-bottom: var(--space-1);
}
@media (max-width: 768px) {
  .featured-card {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .featured-metrics {
    border-left: none;
    border-top: 1px solid var(--border-color);
    padding-left: 0;
    padding-top: var(--space-8);
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
  }
}

/* =========================================
   9. Case Studies Grid & Tabs
   ========================================= */
.tabs-container {
  display: flex;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: var(--space-4);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: color var(--transition-speed);
  padding: var(--space-2) 0;
  white-space: nowrap;
}
.tab-btn:hover {
  color: var(--text-main);
}
.tab-btn.active {
  color: var(--accent-teal);
  position: relative;
}
.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: calc(-1 * var(--space-4) - 1px);
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-teal), var(--accent-indigo));
}

/* =========================================
   10. Testimonials
   ========================================= */
.carousel-container {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: var(--space-4);
}
.carousel-container::-webkit-scrollbar {
  height: 3px;
}
.carousel-container::-webkit-scrollbar-track {
  background: var(--bg-color);
}
.carousel-container::-webkit-scrollbar-thumb {
  background: rgba(26, 115, 232, 0.3);
  border-radius: var(--radius-pill);
}
.carousel-track {
  display: inline-flex;
  gap: var(--space-6);
}
.testimonial-card {
  width: 400px;
  flex-shrink: 0;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.testimonial-card p {
  font-size: 1rem;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  margin-bottom: var(--space-8);
  color: var(--text-main);
  line-height: 1.65;
}
.testimonial-author strong {
  display: block;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.875rem;
}
.testimonial-author span {
  font-size: 0.8125rem;
  color: var(--text-muted);
}
@media (max-width: 768px) {
  .testimonial-card {
    width: 85vw;
  }
}

/* =========================================
   11. Tech Stack
   ========================================= */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}
.stack-category h3 {
  font-size: 1rem;
  margin-bottom: var(--space-4);
  color: var(--text-main);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: var(--space-2);
}
.stack-category ul {
  list-style: none;
}
.stack-category li {
  color: var(--text-muted);
  margin-bottom: var(--space-2);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
}
.stack-category li::before {
  content: '—';
  color: var(--accent-teal);
  margin-right: var(--space-2);
  font-size: 0.75rem;
  opacity: 0.7;
}
@media (max-width: 768px) {
  .stack-grid {
    grid-template-columns: 1fr;
  }
}

/* =========================================
   12. Approach
   ========================================= */
.approach-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}
.approach-header h2 {
  max-width: 360px;
  font-style: italic;
}
.approach-body p {
  font-size: 1rem;
  margin-bottom: var(--space-6);
  line-height: 1.8;
}
@media (max-width: 768px) {
  .approach-layout {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

/* =========================================
   13. Blog Preview
   ========================================= */
.blog-card {
  cursor: pointer;
  transition: transform var(--transition-speed) ease-out,
              border-color var(--transition-speed),
              box-shadow var(--transition-speed);
}
.blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-active);
  box-shadow: 0 2px 12px var(--accent-glow);
}
.blog-card h3 {
  margin-top: var(--space-2);
  font-size: 1.125rem;
}

/* =========================================
   14. About / Team
   ========================================= */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}
.about-text h2 {
  margin-bottom: var(--space-6);
  font-style: italic;
}
.about-text p {
  font-size: 1rem;
  line-height: 1.8;
}
.about-photo {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  aspect-ratio: 4 / 5;
}
.photo-placeholder {
  width: 100%;
  height: 100%;
  background-color: var(--card-bg);
  background-image:
    radial-gradient(circle at 30% 40%, rgba(26, 115, 232, 0.06) 0%, transparent 60%),
    radial-gradient(circle at 70% 70%, rgba(66, 133, 244, 0.04) 0%, transparent 50%);
}
.founder-info {
  margin-top: var(--space-8);
  border-left: 2px solid var(--accent-teal);
  padding-left: var(--space-4);
}
.founder-info strong {
  margin-bottom: 0;
  display: block;
  color: var(--text-main);
  font-size: 0.9375rem;
}
.founder-info span {
  font-size: 0.8125rem;
  color: var(--text-muted);
}
@media (max-width: 768px) {
  .about-layout { grid-template-columns: 1fr; }
  .about-photo { aspect-ratio: 16 / 9; }
}

/* =========================================
   15. FAQ
   ========================================= */
.faq-container {
  max-width: 720px;
}
.faq-item {
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-4) 0;
}
.faq-item summary {
  color: var(--text-main);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color var(--transition-speed);
}
.faq-item summary:hover {
  color: var(--accent-teal);
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: '+';
  color: var(--accent-teal);
  font-family: var(--font-body);
  font-size: 1.25rem;
  font-weight: 300;
  transition: transform var(--transition-speed);
  flex-shrink: 0;
  margin-left: var(--space-4);
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-content {
  padding-top: var(--space-4);
}
.faq-content p {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* =========================================
   16. Final CTA
   ========================================= */
.cta-box {
  background: linear-gradient(var(--card-bg), var(--card-bg)) padding-box,
              linear-gradient(135deg, rgba(26, 115, 232, 0.4), rgba(66, 133, 244, 0.4)) border-box;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: var(--space-16) var(--space-8);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 55% at 50% 0%, rgba(26, 115, 232, 0.05) 0%, transparent 65%);
  pointer-events: none;
}
.cta-box h2 {
  font-style: italic;
  position: relative;
}
.cta-box p {
  text-align: center;
  max-width: 460px;
  margin: 0 auto var(--space-8);
  position: relative;
}
.cta-form {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  max-width: 460px;
  margin: 0 auto;
  position: relative;
}
.cta-form input {
  flex-grow: 1;
  padding: var(--space-3) var(--space-4);
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.875rem;
  transition: border-color var(--transition-speed);
}
.cta-form input:focus {
  outline: none;
  border-color: var(--accent-teal);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}
@media (max-width: 768px) {
  .cta-form { flex-direction: column; }
}

/* =========================================
   17. Footer
   ========================================= */
.footer {
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-12);
  padding-bottom: var(--space-6);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}
.footer-links strong {
  display: block;
  margin-bottom: var(--space-4);
  color: var(--text-main);
  font-size: 0.875rem;
}
.footer-links ul {
  list-style: none;
}
.footer-links li {
  margin-bottom: var(--space-2);
}
.footer-links a {
  color: var(--text-muted);
  font-size: 0.875rem;
  transition: color var(--transition-speed);
}
.footer-links a:hover {
  color: var(--accent-teal);
}
.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-6);
  font-size: 0.8125rem;
  color: var(--text-muted);
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}