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

:root {
  --bg: #0b0f14;
  --bg-alt: #111820;
  --surface: #19202a;
  --border: #252d3a;
  --text: #e2e6ed;
  --text-muted: #8b95a5;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --radius: 8px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 48px;
}

/* Nav */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(11, 15, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.logo {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.logo img {
  height: 28px;
  filter: invert(1);
}

.logo-foot {
  height: 22px;
  filter: invert(1);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 28px;
  background: var(--accent);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.15s;
}

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

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

/* Hero */
.hero {
  padding: 160px 0 100px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 24px;
  max-width: 18ch;
  margin-left: auto;
  margin-right: auto;
}

.hide-sm {
  display: inline;
}

@media (max-width: 700px) {
  .hide-sm {
    display: none;
  }
}

.hero-sub {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 60ch;
  margin: 0 auto 36px;
  line-height: 1.6;
}

/* Sections */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.section-cta h2 {
  margin-bottom: 16px;
}

.section-desc {
  color: var(--text-muted);
  max-width: 65ch;
  margin-bottom: 48px;
  font-size: 1rem;
  line-height: 1.6;
}

/* Card Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 32px;
}

.step {
  position: relative;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 50%;
  margin-bottom: 16px;
}

.step h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.step p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* Audience */
.audience-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.audience-list li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 24px;
  font-size: 0.9rem;
  font-weight: 500;
}

/* CTA */
.section-cta {
  text-align: center;
  padding: 100px 0;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%);
}

.section-cta p {
  color: var(--text-muted);
  margin: 8px 0 32px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a:not(.btn) {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.15s;
}

.nav-links a:not(.btn):hover {
  color: var(--text);
}

/* Hero extras */
.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.hero-cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

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

.btn-ghost:hover {
  background: var(--surface);
  border-color: var(--text-muted);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 980px;
  margin: 0 auto;
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.stat {
  display: flex;
  flex-direction: column;
  text-align: center;
}

.stat-num {
  font-size: clamp(1.5rem, 2.8vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.stat-num sup,
.stat-label sup {
  color: var(--accent);
  font-weight: 700;
  margin-left: 1px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.footnote {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 18px;
  opacity: 0.8;
}

/* Grid variants */
.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

/* Card variants */
.card-accent {
  border-top: 3px solid var(--accent);
}

.card-accent h3 {
  font-size: 1.05rem;
  margin-bottom: 12px;
}

.card-accent p + p {
  margin-top: 12px;
}

.card-example {
  font-size: 0.85rem !important;
  color: var(--text) !important;
  background: var(--bg);
  border-left: 2px solid var(--accent);
  padding: 12px 14px;
  border-radius: 4px;
  margin-top: 14px !important;
}

.card-tall {
  padding: 36px;
}

.card-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

.card-tall h3 {
  font-size: 1.2rem;
  margin-bottom: 18px;
  line-height: 1.35;
}

.bullet {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.bullet li {
  position: relative;
  padding-left: 22px;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.bullet li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

/* Responsive */
@media (max-width: 900px) {
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .hero-stats {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .nav-links {
    gap: 14px;
  }
  .nav-links a:not(.btn) {
    display: none;
  }
  .hero {
    padding: 120px 0 60px;
  }
  .section {
    padding: 56px 0;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .steps {
    grid-template-columns: 1fr;
  }
}