/* ebikeupgrades.com — public landing only. Charcoal on white. */

:root {
  --ink: #1a1a1a;
  --paper: #ffffff;
  --muted: #3a3a3a;
  --rule: 2px solid #1a1a1a;
  --space: 1.25rem;
  --max: 44rem;
}

* { box-sizing: border-box; }

html {
  font-size: 18px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.45;
}

a { color: var(--ink); }

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.wrap {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
}

.site-header {
  border-bottom: var(--rule);
  padding: 0.75rem 0;
  font-size: 0.95rem;
}

.site-header .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.brand { font-weight: 700; }

.hero {
  padding: 2rem 0 1.5rem;
}

.kicker {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 0.5rem;
}

h1 {
  font-size: clamp(1.75rem, 5vw, 2.35rem);
  line-height: 1.15;
  margin: 0 0 0.75rem;
}

.lede {
  font-size: 1.05rem;
  max-width: 36rem;
  margin-bottom: 1.25rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.65rem 1.1rem;
  border: var(--rule);
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
}

.btn:hover { background: #000; }

.btn-secondary {
  background: var(--paper);
  color: var(--ink);
}

.btn-secondary:hover { background: #f4f4f4; }

.hero-visual {
  display: grid;
  gap: 1rem;
  margin-top: 0.5rem;
}

@media (min-width: 720px) {
  .hero-visual { grid-template-columns: 1fr 1fr; }
}

.hero-visual figure {
  border: var(--rule);
  padding: 0.35rem;
  margin: 0;
}

.hero-visual figcaption {
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.35rem 0.15rem 0;
}

section {
  padding: 2rem 0;
  border-top: var(--rule);
}

h2 {
  font-size: 1.35rem;
  margin: 0 0 0.75rem;
}

h3 {
  font-size: 1.1rem;
  margin: 1.25rem 0 0.4rem;
}

p { margin: 0 0 0.75rem; }

ul, ol {
  margin: 0 0 0.75rem;
  padding-left: 1.25rem;
}

li { margin: 0.35rem 0; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  margin: 0.75rem 0 1rem;
}

th, td {
  border: var(--rule);
  padding: 0.45rem 0.5rem;
  text-align: left;
  vertical-align: top;
}

th { font-weight: 700; }

.fork {
  border: var(--rule);
  padding: 0.75rem 0.85rem;
  margin: 0.75rem 0;
}

.fork strong { display: block; margin-bottom: 0.25rem; }

.watch {
  border: var(--rule);
  padding: 0.65rem 0.75rem;
  margin: 1rem 0;
  font-weight: 700;
}

.price-box {
  border: var(--rule);
  padding: 1rem 1.1rem;
  margin-top: 1rem;
}

.price {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
}

.note {
  font-size: 0.95rem;
  color: var(--muted);
}

.site-footer {
  border-top: var(--rule);
  padding: 1.5rem 0 2rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.site-footer a { color: var(--muted); }