:root {
  --bg: #ffffff;
  --bg-card: #f8fafc;
  --foreground: #0f172a;
  --muted-foreground: #64748b;
  --primary: #2dd4bf;
  --primary-foreground: #0f172a;
  --border: #e2e8f0;
  --card-ring: rgba(15, 23, 42, 0.06);
  --bg-dark-card: #0f1a1b;
  --bg-code: #111817;
  --code-text: #d8efea;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--foreground);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.site-shell { min-height: 100vh; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 1.25rem; }
@media (min-width: 640px) { .container { padding: 0 1.75rem; } }
@media (min-width: 1024px) { .container { padding: 0 2.5rem; } }

/* Header */
header {
  position: sticky;
  top: 0;
  z-index: 40;
  padding-top: 1.25rem;
}
header .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--border);
  border-radius: 9999px;
  background: rgba(255,255,255,0.92);
  padding: 0.5rem 0.75rem;
  box-shadow: 0 18px 60px rgba(7,16,18,0.06);
  backdrop-filter: blur(12px);
}
@media (min-width: 640px) { header .header-inner { padding: 0.5rem 1rem; } }

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-radius: 9999px;
  padding: 0.375rem 0.5rem;
  text-decoration: none;
}
.logo-link img { width: 36px; height: 36px; border-radius: 8px; }
.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--foreground);
}
.logo-tagline {
  margin-top: 2px;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  color: var(--muted-foreground);
}

nav { display: none; align-items: center; gap: 0.25rem; }
@media (min-width: 1024px) { nav { display: flex; } }
nav a {
  border-radius: 9999px;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  color: var(--muted-foreground);
  text-decoration: none;
  transition: all 0.15s;
}
nav a:hover { background: var(--bg-card); color: var(--foreground); }

.header-cta { display: none; }
@media (min-width: 1024px) { .header-cta { display: block; } }
.header-cta a {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  border-radius: 9999px;
  padding: 0.5rem 1.125rem;
  font-size: 0.875rem;
  color: var(--muted-foreground);
  text-decoration: none;
  border: 1px solid var(--border);
  transition: all 0.15s;
}
.header-cta a:hover { background: var(--bg-card); color: var(--foreground); }

.mobile-menu-btn {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.375rem;
  border-radius: 9999px;
  color: var(--foreground);
}
@media (min-width: 1024px) { .mobile-menu-btn { display: none; } }
.mobile-menu-btn svg { width: 1.75rem; height: 1.75rem; }

/* Sections */
section { padding: 2.5rem 0; }
@media (min-width: 1024px) { section { padding: 3.5rem 0; } }

.grid-2col {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}
@media (min-width: 1024px) { .grid-2col-hero { grid-template-columns: 1.15fr 0.85fr; } }
@media (min-width: 1024px) { .grid-2col-sidebar { grid-template-columns: 0.7fr 1.3fr; } }
@media (min-width: 1024px) { .grid-2col-equal { grid-template-columns: 1fr 1fr; } }

/* Badges */
.badges { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; }
.badge {
  display: inline-block;
  border-radius: 9999px;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
}
.badge-primary {
  background: rgba(45, 212, 191, 0.08);
  color: var(--primary);
  border: 1px solid rgba(45, 212, 191, 0.3);
}
.badge-outline {
  background: transparent;
  color: var(--foreground);
  border: 1px solid rgba(15, 23, 42, 0.15);
}

/* Eyebrow */
.eyebrow {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  color: var(--muted-foreground);
  margin-bottom: 1rem;
}

/* Headings */
h1, h2, h3 { font-weight: 700; letter-spacing: -0.03em; line-height: 1.15; }
h1 { font-size: 2.5rem; margin-bottom: 1rem; }
@media (min-width: 640px) { h1 { font-size: 3rem; } }
@media (min-width: 1024px) { h1 { font-size: 3.75rem; } }
h2 { font-size: 1.75rem; margin-bottom: 1rem; }
@media (min-width: 640px) { h2 { font-size: 2.25rem; } }
h3 { font-size: 1.125rem; }

.text-primary { color: var(--primary); }
.text-muted { color: var(--muted-foreground); }

/* Hero */
.hero-desc {
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--muted-foreground);
  margin-bottom: 1.5rem;
  max-width: 42rem;
}
@media (min-width: 640px) { .hero-desc { font-size: 1.25rem; } }

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}
@media (min-width: 640px) { .hero-buttons { flex-direction: row; } }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: 9999px;
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s;
  border: none;
  cursor: pointer;
}
.btn-primary {
  background: var(--primary);
  color: var(--primary-foreground);
}
.btn-primary:hover { opacity: 0.9; }
.btn-secondary {
  background: var(--bg-card);
  color: var(--foreground);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg); }

/* Metric tabs */
.metric-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}
@media (min-width: 640px) { .metric-grid { grid-template-columns: repeat(3, 1fr); } }
.metric-tab {
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1rem;
  background: var(--bg-card);
}
.metric-tab .label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  color: var(--muted-foreground);
  margin-bottom: 0.25rem;
}
.metric-tab .value {
  font-size: 1rem;
  font-weight: 600;
}

/* Hero card */
.hero-card {
  border: 1px solid var(--border);
  border-radius: 1.5rem;
  padding: 1.25rem;
  background: rgba(248, 250, 252, 0.8);
  box-shadow: 0 24px 80px rgba(6,18,20,0.06);
  position: relative;
}
.hero-card-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.hero-card-header span {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  color: var(--muted-foreground);
}
.hero-card-img {
  background: #d8d0c2;
  border-radius: 1.5rem;
  border: 1px solid var(--border);
  padding: 2rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  min-height: 200px;
}
.hero-card-img img { max-width: 100%; height: auto; border-radius: 0.5rem; }

.hero-sub-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}
@media (min-width: 640px) { .hero-sub-cards { grid-template-columns: 1fr 1fr; } }
.sub-card {
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 0.75rem;
  background: rgba(255,255,255,0.9);
  font-size: 0.875rem;
}
.sub-card .sc-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  color: var(--muted-foreground);
  margin-bottom: 0.25rem;
}

/* Section label - left column in sidebar layout */
.section-label { margin-bottom: 0.5rem; }
.section-label h2 { margin-bottom: 0.75rem; }
.section-label .desc { font-size: 1rem; color: var(--muted-foreground); }

/* Feature cards grid */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}
@media (min-width: 640px) { .feature-grid { grid-template-columns: 1fr 1fr; } }

.feature-card, .step-card {
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1rem;
  background: var(--bg-card);
  transition: all 0.15s;
}
.feature-card:hover, .step-card:hover { border-color: var(--primary); }

.feature-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.75rem;
  background: rgba(45, 212, 191, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.75rem;
  color: var(--primary);
}
.feature-icon svg { width: 1.25rem; height: 1.25rem; }

.step-number {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  color: var(--muted-foreground);
  margin-bottom: 0.5rem;
}

.card-desc { font-size: 0.875rem; color: var(--muted-foreground); margin-top: 0.375rem; }

/* Dark section card */
.dark-card {
  background: var(--bg-dark-card);
  border-radius: 1.5rem;
  padding: 1.75rem;
  color: #fff;
  box-shadow: 0 30px 90px rgba(7,16,18,0.24);
}
.dark-card .badge-primary { background: rgba(45, 212, 191, 0.15); }
.dark-card h3 { color: #fff; }
.dark-card .desc { color: rgba(255,255,255,0.68); }
.dark-stat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}
@media (min-width: 640px) { .dark-stat-grid { grid-template-columns: repeat(3, 1fr); } }
.dark-stat { border-top: 1px solid rgba(255,255,255,0.12); padding-top: 1rem; }
.dark-stat .num { font-size: 1.5rem; font-weight: 700; margin-bottom: 0.25rem; }
.dark-stat .lbl { font-size: 0.875rem; color: rgba(255,255,255,0.6); }

/* Deep dive card */
.deep-card {
  border: 1px solid var(--border);
  border-radius: 1.5rem;
  padding: 1.75rem;
  background: var(--bg-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.deep-card-divider { height: 1px; background: var(--border); margin: 1rem 0; }
.deep-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.deep-tags .badge { font-size: 0.72rem; }

/* Code block */
.code-block {
  background: var(--bg-code);
  border-radius: 1rem;
  padding: 1rem;
  margin-top: 0.5rem;
  font-family: "SF Mono", "Fira Code", monospace;
  font-size: 0.8125rem;
  color: var(--code-text);
  overflow-x: auto;
}

/* Arrow icon inline */
.arrow-icon { width: 1rem; height: 1rem; flex-shrink: 0; }

/* Testimonial marquee */
.testimonials-wrap {
  overflow: hidden;
  position: relative;
}
.testimonial-track {
  display: flex;
  gap: 1rem;
  animation: scroll-left 30s linear infinite;
  width: max-content;
}
.testimonial-track.reverse { animation: scroll-right 30s linear infinite; }
@keyframes scroll-left {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
@keyframes scroll-right {
  0% { transform: translateX(-50%); }
  100% { transform: translateX(0); }
}
.testimonial-card {
  min-width: 300px;
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.25rem;
  background: var(--bg-card);
  flex-shrink: 0;
}
.testimonial-card .author { font-weight: 600; font-size: 0.9375rem; }
.testimonial-card .role { font-size: 0.75rem; color: var(--muted-foreground); }
.testimonial-card .quote { font-size: 0.875rem; color: var(--muted-foreground); margin-top: 0.5rem; font-style: italic; }

/* Trust row */
.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: 1.5rem;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  color: var(--muted-foreground);
}
.trust-item svg { width: 1rem; height: 1rem; color: var(--primary); }

/* FAQ accordion */
.faq-list { display: flex; flex-direction: column; gap: 0.75rem; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: 1rem;
  overflow: hidden;
}
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: none;
  cursor: pointer;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--foreground);
  text-align: left;
  transition: background 0.15s;
}
.faq-question:hover { background: rgba(45, 212, 191, 0.05); }
.faq-question svg { width: 1.25rem; height: 1.25rem; transition: transform 0.2s; flex-shrink: 0; }
.faq-item.open .faq-question svg { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 1.25rem;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 1.25rem 1.25rem;
}
.faq-answer p { font-size: 0.875rem; color: var(--muted-foreground); line-height: 1.7; }

/* Footer */
footer {
  padding: 2rem 0 1.5rem;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  border-radius: 0 0 1rem 1rem;
  padding: 1.5rem 1rem;
  font-size: 0.875rem;
  color: var(--muted-foreground);
}
@media (min-width: 640px) {
  .footer-inner { flex-direction: row; align-items: center; justify-content: space-between; padding: 1.5rem; }
}
.footer-left .site-name { font-weight: 600; color: var(--foreground); }
.footer-right { display: flex; flex-wrap: wrap; gap: 1rem; }
.footer-right a { color: var(--muted-foreground); text-decoration: none; }
.footer-right a:hover { color: var(--foreground); }

/* Social proof */
.social-proof {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.avatar-stack { display: flex; }
.avatar-stack img {
  width: 32px;
  height: 32px;
  border-radius: 9999px;
  border: 2px solid var(--bg);
  margin-right: -8px;
}
.social-proof .text { font-size: 0.875rem; color: var(--muted-foreground); }

/* Guarantee bar */
.guarantee-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
.guarantee-bar span {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  color: var(--muted-foreground);
}
.guarantee-bar svg { width: 1rem; height: 1rem; color: var(--primary); }

/* Link cards */
.link-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}
@media (min-width: 640px) { .link-cards { grid-template-columns: repeat(3, 1fr); } }
.link-card {
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.25rem;
  text-decoration: none;
  color: var(--foreground);
  transition: all 0.15s;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.link-card:hover { border-color: var(--primary); background: var(--bg-card); }
.link-card .lc-title { font-weight: 600; }
.link-card .lc-desc { font-size: 0.8125rem; color: var(--muted-foreground); }

/* Placeholder avatar colors */
.avatar-placeholder {
  width: 32px;
  height: 32px;
  border-radius: 9999px;
  border: 2px solid var(--bg);
  margin-right: -8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  color: #fff;
}