@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg: #ffffff;
  --ink: #18181b;
  --ink-soft: #52525b;
  --bg-card: #ffffff;
  --line: #e4e4e7;
  --ink-deep: #0a0a0a;
  --accent: #6366f1;
  --brand: #0a0a0a;
  --brand-2: #6366f1;
  --brand-soft: #818cf8;
  --focus: #0a0a0a;
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', 'SF Mono', 'Menlo', monospace;

  --black: #0a0a0a;
  --white: #ffffff;
  --gray-50: #fafafa;
  --gray-100: #f4f4f5;
  --gray-200: #e4e4e7;
  --gray-300: #d4d4d8;
  --gray-400: #a1a1aa;
  --gray-500: #71717a;
  --gray-600: #52525b;
  --gray-700: #3f3f46;
  --gray-800: #27272a;
  --gray-900: #18181b;
  --accent-light: #818cf8;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  min-height: 100%;
}

body {
  position: relative;
  overflow-x: hidden;
  background:
    linear-gradient(170deg, #ffffff, #fafafa);
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(circle at 80% 85%, rgba(99, 102, 241, 0.06), transparent 42%),
    radial-gradient(circle at 20% 75%, rgba(10, 10, 10, 0.05), transparent 38%);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  background: #111827;
  color: #f9fafb;
  padding: 0.5rem;
  border-radius: 0.5rem;
  z-index: 999;
}

.topbar {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.2rem 1.2rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 0.8rem;
  background: linear-gradient(135deg, #111827, #374151);
  color: #fff;
  font-weight: 700;
  display: inline-grid;
  place-items: center;
  font-size: 0.92rem;
}

.topbar-nav {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.95rem;
  margin-left: auto;
}

.topbar-nav a {
  position: relative;
  padding-bottom: 0.18rem;
}

.topbar-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--ink);
  transition: transform 0.2s ease;
}

.topbar-nav a:hover {
  color: var(--ink);
}

.topbar-nav a:hover::after {
  transform: scaleX(1);
}

.topbar a.nav-cta,
.topbar .nav-cta {
  color: #fff !important;
  background: #111827;
  border: 1px solid #111827;
  padding: 0.48rem 0.95rem;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 130ms ease, background-color 130ms ease;
}

.topbar a.nav-cta:hover,
.topbar .nav-cta:hover {
  background: #0b1222;
  transform: translateY(-1px);
}

.topbar a.nav-cta::after,
.topbar .nav-cta::after {
  display: none;
}

body.blog-shell {
  font-family: var(--font-body);
  background: var(--white);
  color: var(--gray-900);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.blog-shell::before {
  display: none;
}

body.blog-shell .topbar {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-100);
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 100;
  justify-content: space-between;
  align-items: center;
}

body.blog-shell .brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--black);
}

body.blog-shell .brand svg {
  height: 28px;
  width: auto;
}

body.blog-shell .brand-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.02em;
}

body.blog-shell .topbar-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

body.blog-shell .topbar-nav a {
  position: relative;
  padding-bottom: 0;
  text-decoration: none;
  color: var(--gray-700);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

body.blog-shell .topbar-nav a:hover {
  color: var(--black);
}

body.blog-shell .topbar-nav a::after {
  display: none;
}

body.blog-shell .topbar a.nav-cta,
body.blog-shell .topbar .nav-cta {
  color: #fff;
  background: var(--black);
  border: 1px solid var(--black);
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 500;
  font-size: 14px;
  transition: all 0.2s;
}

body.blog-shell .topbar a.nav-cta:hover,
body.blog-shell .topbar .nav-cta:hover {
  background: var(--gray-800);
}

body.blog-shell .topbar a.nav-cta::after,
body.blog-shell .topbar .nav-cta::after {
  display: none;
}

body.blog-shell .footer {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px;
  border-top: 1px solid var(--gray-200);
  color: var(--gray-500);
}

body.blog-shell .footer a {
  color: var(--gray-500);
}

body.blog-shell .footer-links {
  display: flex;
  gap: 24px;
}

@media (max-width: 768px) {
  body.blog-shell .topbar {
    flex-wrap: wrap;
    row-gap: 10px;
  }

  body.blog-shell .topbar-nav {
    margin-left: 0;
    width: 100%;
  }

  body.blog-shell .footer .footer-links {
    display: flex;
    justify-content: center;
  }
}

main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 2.3rem 1.2rem 4rem;
}

section {
  animation: fade-in-up 560ms both;
  animation-delay: calc(var(--delay, 0) * 110ms);
}

.hero {
  margin-top: 1.2rem;
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.81rem;
  color: var(--ink-soft);
}

h1,
h2,
h3,
h4,
h5 {
  margin-top: 0;
  line-height: 1.08;
  font-family: var(--font-display);
  color: var(--ink-deep);
}

h1 {
  max-width: 16ch;
  margin-top: 0.45rem;
  font-size: clamp(2rem, 7.5vw, 3.55rem);
}

.lead {
  color: var(--ink-soft);
  max-width: 70ch;
  margin: 0.75rem 0 0;
  line-height: 1.62;
  font-size: 1.06rem;
}

.kpi-row {
  margin-top: 1.25rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.kpi-card {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: var(--bg-card);
  box-shadow: 0 20px 45px -34px rgba(15, 23, 42, 0.55);
}

.kpi-card h3 {
  margin: 0;
  font-size: 1.15rem;
}

.kpi-value {
  margin-top: 0.45rem;
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--ink);
}

.kpi-label {
  margin-top: 0.25rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.actions {
  margin-top: 1.55rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  appearance: none;
  border-radius: 999px;
  border: 1px solid var(--ink-soft);
  text-decoration: none;
  color: var(--ink-deep);
  padding: 0.72rem 1.02rem;
  font-family: var(--font-display);
  font-weight: 650;
  font-size: 0.95rem;
  background: #111827;
  color: #f8fafc;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  transition: transform 130ms ease, border-color 130ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.alt {
  color: var(--ink-deep);
  background: #ffffff;
}

.section {
  margin-top: 4.2rem;
}

.section h2 {
  max-width: 18ch;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.cards {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.95rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.1rem;
}

.card p,
.card li {
  color: var(--ink-soft);
  line-height: 1.62;
}

.card ul {
  margin: 0.45rem 0 0;
  padding-left: 1.1rem;
}

.comparison {
  margin-top: 1rem;
  display: grid;
  gap: 0.6rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: #fff;
}

.row {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  padding: 0.85rem 1rem;
  align-items: center;
}

.row + .row {
  border-top: 1px solid var(--line);
}

.row.header {
  font-family: var(--font-display);
  font-weight: 700;
}

.row strong {
  color: var(--ink-deep);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid #cbd5e1;
  color: #334155;
  border-radius: 999px;
  padding: 0.28rem 0.7rem;
  font-size: 0.82rem;
  margin-top: 0.45rem;
  margin-right: 0.45rem;
}

.faq {
  display: grid;
  gap: 0.8rem;
}

.faq h3 {
  margin: 0;
  font-size: 1.15rem;
}

.faq-card {
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: var(--bg-card);
  padding: 1rem;
}

.faq-card p {
  margin: 0.55rem 0 0;
  color: var(--ink-soft);
  line-height: 1.62;
}

.footer {
  margin-top: 4rem;
  padding: 2rem 1.2rem 3.5rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  text-align: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.8rem;
  margin-top: 0.5rem;
}

.footer a {
  color: var(--ink-soft);
  text-decoration: none;
}

.footer a:hover {
  color: var(--ink-deep);
}

.section-subtitle {
  margin-top: 0;
  color: var(--ink-soft);
}

.blog-layout {
  max-width: 840px;
}

.doc-layout {
  max-width: 900px;
}

.doc-prose {
  display: grid;
  gap: 1rem;
  margin-top: 1.4rem;
}

.doc-prose p {
  color: var(--ink-soft);
  line-height: 1.75;
}

.doc-prose h2,
.doc-prose h3 {
  margin-top: 0.8rem;
}

.doc-meta {
  margin-top: 0.6rem;
  color: #6b7280;
  font-family: var(--font-mono);
  font-size: 0.87rem;
}

.doc-figure {
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  overflow: hidden;
}

.doc-figure pre {
  margin: 0;
  padding: 0.9rem;
  background: #0f172a;
  color: #dbeafe;
  overflow-x: auto;
}

.doc-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line);
}

.doc-table th,
.doc-table td {
  border: 1px solid var(--line);
  padding: 0.7rem;
  text-align: left;
  vertical-align: top;
}

.doc-table th {
  background: #f8fafc;
}

.link-arrow {
  font-size: 0.94rem;
}

@media (max-width: 900px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
  }

  .topbar-nav {
    flex-wrap: wrap;
    row-gap: 0.45rem;
  }

  .kpi-row {
    grid-template-columns: 1fr;
  }

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

  .row {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }

  .row div:nth-child(2),
  .row div:nth-child(3) {
    padding-left: 1.2rem;
  }
}

@media (max-width: 580px) {
  main {
    padding-top: 1.5rem;
  }

  .kpi-value {
    font-size: 1.6rem;
  }

  h1 {
    font-size: clamp(1.8rem, 11vw, 2.6rem);
  }
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}