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

/* Base */
html { color-scheme: dark; scroll-behavior: smooth; }

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

a { color: var(--color-text); text-decoration: none; }
a:hover { color: var(--color-accent); }
a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Container */
.container {
  width: 100%;
  max-width: 1080px;
  margin-inline: auto;
  padding-inline: var(--space-6);
}

/* Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-bg);
  box-shadow: var(--shadow-sticky);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  padding-inline: var(--space-6);
  max-width: 1080px;
  margin-inline: auto;
}

.nav-wordmark {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--color-text);
  transition: color var(--duration-fast) var(--easing-standard);
}

.nav-link {
  font-size: 14px;
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--easing-standard);
}

/* Hero */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-block: 96px var(--space-12);
  padding-inline: var(--space-6);
  gap: var(--space-4);
  flex: 1;
}

.hero-mark {
  display: block;
  font-size: 24px;
  line-height: 1;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.hero-h1 {
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.08;
  color: var(--color-text);
  max-width: 16ch;
}

.hero-lede {
  font-size: clamp(18px, 2.5vw, 22px);
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: -0.01em;
}

.hero-sub {
  font-size: clamp(14px, 2vw, 17px);
  color: var(--color-text-muted);
  max-width: 48ch;
  line-height: 1.5;
}

.hero-ctas {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  justify-content: center;
  margin-top: var(--space-2);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding-inline: var(--space-4);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color var(--duration-fast) var(--easing-standard),
              color var(--duration-fast) var(--easing-standard),
              border-color var(--duration-fast) var(--easing-standard);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-accent-fg);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: var(--color-accent-fg);
}

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

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

/* Comparison section */
.comparison {
  padding-block: var(--space-12);
  padding-inline: var(--space-6);
  max-width: 1080px;
  margin-inline: auto;
  width: 100%;
}

.section-h2 {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

.table-scroll {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.comparison-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.4;
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-2) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.comparison-table thead th {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: var(--color-surface);
  height: 40px;
}

.comparison-table tbody th[scope="row"] {
  font-weight: 500;
  color: var(--color-text-muted);
  white-space: nowrap;
  background: var(--color-surface);
}

.comparison-table tbody td {
  color: var(--color-text-muted);
}

.comparison-table tbody tr:last-child th,
.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

/* ODD column highlight */
.col-odd {
  background: var(--color-surface-2);
}

.comparison-table thead .col-odd {
  color: var(--color-accent);
  background: var(--color-surface-2);
}

.th-odd {
  color: var(--color-accent);
}

.comparison-table tbody .col-odd {
  color: var(--color-text);
  font-weight: 500;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-6);
  padding-inline: var(--space-6);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  max-width: 1080px;
  margin-inline: auto;
  margin-bottom: var(--space-2);
}

.site-footer nav a {
  font-size: 13px;
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--easing-standard);
}

.site-footer nav a:hover { color: var(--color-text); }

.footer-copy {
  font-size: 12px;
  color: var(--color-text-muted);
  max-width: 1080px;
  margin-inline: auto;
}

.footer-copy a {
  color: var(--color-text-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Responsive */
@media (max-width: 640px) {
  .hero { padding-block: 64px var(--space-12); }
  .hero-ctas { flex-direction: column; align-items: stretch; width: 100%; max-width: 280px; }
  .btn { justify-content: center; }
}