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

:root {
  --ink: #0f1117;
  --ink-secondary: #4b5563;
  --ink-tertiary: #9ca3af;
  --surface: #ffffff;
  --surface-alt: #f8f9fb;
  --surface-card: #ffffff;
  --border: #e5e7eb;
  --accent: #5b4cf0;
  --accent-hover: #4737d9;
  --accent-light: #eeedfb;
  --radius: 16px;
  --radius-sm: 8px;
  --shadow-card: 0 1px 3px rgba(0,0,0,.06), 0 8px 32px rgba(0,0,0,.07);
  --shadow-btn: 0 2px 8px rgba(91,76,240,.28);
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Layout */
.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--ink);
  letter-spacing: -0.01em;
  text-decoration: none;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink-secondary);
  text-decoration: none;
  transition: color 0.15s;
}

.nav a:hover {
  color: var(--ink);
  text-decoration: none;
}

/* Buttons */
.btn-primary {
  display: inline-block;
  padding: 12px 24px;
  background: var(--accent);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-btn);
  text-decoration: none;
  transition: background 0.15s, box-shadow 0.15s, transform 0.1s;
}

.btn-primary:hover {
  background: var(--accent-hover);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(91,76,240,.34);
}

.btn-nav {
  display: inline-block;
  padding: 7px 16px;
  background: var(--ink);
  color: #fff !important;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background 0.15s;
}

.btn-nav:hover {
  background: #1f2937;
  text-decoration: none;
}

/* Hero */
.hero {
  padding: 96px 0 80px;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 20px;
  padding: 5px 14px;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 100px;
}

h1 {
  margin: 0 0 20px;
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.lede {
  max-width: 600px;
  margin: 0 auto 36px;
  color: var(--ink-secondary);
  font-size: 1.1rem;
  line-height: 1.65;
}

/* Sections */
.section {
  padding: 72px 0;
}

.section-alt {
  background: var(--surface-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-head h2 {
  margin: 0 0 10px;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-head p {
  margin: 0;
  color: var(--ink-secondary);
  font-size: 1.05rem;
}

/* Product card */
.products-grid {
  display: grid;
  gap: 24px;
}

.product-card {
  position: relative;
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 40px 36px;
  box-shadow: var(--shadow-card);
  max-width: 680px;
  margin: 0 auto;
}

.product-card.featured {
  border-color: #c7c3f8;
}

.product-badge {
  display: inline-block;
  margin-bottom: 20px;
  padding: 4px 12px;
  background: #ecfdf5;
  color: #059669;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 100px;
  border: 1px solid #a7f3d0;
}

.product-icon {
  font-size: 2rem;
  margin-bottom: 12px;
  color: var(--accent);
}

.product-card h3 {
  margin: 0 0 6px;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.product-tagline {
  margin: 0 0 16px;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--ink-secondary);
}

.product-desc {
  margin: 0 0 20px;
  color: var(--ink-secondary);
  line-height: 1.65;
}

.product-features {
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.product-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--ink-secondary);
}

.product-features li::before {
  content: "✓";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  min-width: 20px;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 50%;
}

/* Values */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
  text-align: center;
}

.value-icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.value h4 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  font-weight: 600;
}

.value p {
  margin: 0;
  color: var(--ink-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Footer */
.footer {
  padding: 36px 0;
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copy {
  margin: 0;
  color: var(--ink-tertiary);
  font-size: 0.875rem;
}

.footer a {
  font-size: 0.875rem;
  color: var(--ink-secondary);
}

/* Responsive */
@media (max-width: 640px) {
  .hero {
    padding: 64px 0 56px;
  }

  .product-card {
    padding: 28px 24px;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .nav {
    gap: 16px;
  }
}