@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@500;600&family=Source+Serif+4:wght@400;500;600;700&display=swap');

:root {
  --ink: #0B0C0E;
  --bg: #FFFFFF;
  --surface: #F6F6F7;
  --line: #E3E3E6;
  --muted: #71717A;
  --accent: #C81D3D;
  --accent-dark: #A3172F;
  --forest: #15803D;
  --amber: #B45309;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 17px;
  line-height: 1.65;
}

.eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  font-size: 11px;
  color: var(--muted);
}

h1, h2, h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 { font-size: 2.5rem; margin: 0.2em 0 0.4em; }
h2 { font-size: 1.5rem; margin: 1.6em 0 0.5em; }
h3 { font-size: 1.1rem; margin: 1.2em 0 0.4em; font-family: 'Inter', sans-serif; }

p, li, dd { font-family: 'Source Serif 4', Georgia, serif; }

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

.container { max-width: 780px; margin: 0 auto; padding: 0 20px; }
.wide { max-width: 1040px; }

/* Header */
header.site {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(6px);
  z-index: 50;
}
header.site .container {
  max-width: 1040px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: 'Inter', sans-serif;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}
.logo .mark { width: 9px; height: 9px; background: var(--accent); display: inline-block; flex-shrink: 0; }
.logo .word { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 15px; color: var(--ink); letter-spacing: -0.01em; }
.logo .suffix { font-family: 'Inter', sans-serif; font-weight: 500; font-size: 15px; color: var(--muted); }

nav.main { display: flex; align-items: center; gap: 28px; }
nav.main a.navlink {
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  position: relative;
  padding-bottom: 2px;
}
nav.main a.navlink::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 1.5px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.25s ease;
}
nav.main a.navlink:hover::after { transform: scaleX(1); transform-origin: left; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 11px 20px;
  border-radius: 4px;
  text-decoration: none;
  background: var(--accent);
  color: #fff !important;
  transition: background 0.15s ease, transform 0.15s ease;
}
.btn:hover { background: var(--accent-dark); transform: translateY(-1px); }
.btn.ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink) !important;
}
.btn.ghost:hover { border-color: var(--ink); transform: none; background: transparent; }

/* Hero */
.hero { padding: 84px 0 56px; }
.hero .container.wide { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.hero h1 { font-size: 2.7rem; margin: 0.25em 0 0.4em; }
.hero p.lead {
  font-family: 'Inter', sans-serif;
  color: var(--muted);
  font-size: 17px;
  max-width: 480px;
  margin: 0 0 30px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

@media (max-width: 860px) {
  .hero .container.wide { grid-template-columns: 1fr; }
}

/* Typewriter demo panel */
.demo-panel {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 26px 24px;
  background: var(--surface);
  min-height: 190px;
}
.demo-panel .demo-label { font-family: 'IBM Plex Mono', monospace; font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.demo-before {
  font-family: 'Inter', sans-serif;
  font-size: 14.5px;
  color: var(--muted);
  text-decoration: line-through;
  text-decoration-color: var(--accent);
  min-height: 1.4em;
}
.demo-arrow { color: var(--line); font-family: 'IBM Plex Mono', monospace; font-size: 12px; margin: 10px 0; }
.demo-after {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 16px;
  color: var(--ink);
  min-height: 2.6em;
}
.demo-after .cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--accent);
  margin-left: 2px;
  vertical-align: middle;
  animation: blink 0.9s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.strip {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--muted);
  padding: 14px 0 40px;
  letter-spacing: 0.02em;
}

/* Reveal on scroll (progressive enhancement — invisible only once JS confirms it can reveal) */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; transition-delay: var(--d, 0ms); }
.js .reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  * { animation: none !important; }
}

/* Cards */
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 24px 0 10px; }
@media (max-width: 720px) { .grid3 { grid-template-columns: 1fr; } }

.card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 24px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.card:hover { border-color: var(--ink); transform: translateY(-3px); }
.card h3 { margin-top: 0; }
.card p { font-family: 'Inter', sans-serif; font-size: 14.5px; color: var(--muted); }
.card a.more { font-family: 'Inter', sans-serif; font-size: 13.5px; font-weight: 600; text-decoration: none; }

.section { padding: 40px 0; }
.section.alt { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* Callout box (tool CTA inside articles) */
.callout {
  background: var(--ink);
  color: #fff;
  border-radius: 6px;
  padding: 26px 28px;
  margin: 34px 0;
  font-family: 'Inter', sans-serif;
}
.callout .eyebrow { color: #E7A0AC; }
.callout h3 { color: #fff; margin: 6px 0 8px; font-family: 'Space Grotesk', sans-serif; }
.callout p { color: #C4C4CC; font-size: 14.5px; margin: 0 0 16px; font-family: 'Inter', sans-serif; }

/* Article */
article.guide { padding: 46px 0 60px; }
.breadcrumb { font-family: 'Inter', sans-serif; font-size: 13px; color: var(--muted); margin-bottom: 18px; }
.breadcrumb a { text-decoration: none; color: var(--muted); }
.byline {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 30px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 20px;
}
article.guide p { margin: 0 0 1.1em; }
article.guide ul, article.guide ol { margin: 0 0 1.2em; padding-left: 1.3em; }
article.guide li { margin-bottom: 0.5em; }

.faq dt { font-family: 'Inter', sans-serif; font-weight: 700; margin-top: 1.1em; }
.faq dd { margin: 0.3em 0 0; font-family: 'Source Serif 4', serif; }

.related { font-family: 'Inter', sans-serif; font-size: 14px; }
.related a { display: block; margin-bottom: 8px; }

footer.site {
  background: var(--ink);
  color: #9A9AA3;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  padding: 34px 0;
  margin-top: 20px;
}
footer.site .container.wide { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 20px; }
footer.site a { color: #C4C4CC; text-decoration: none; }
footer.site .disclaimer { max-width: 620px; color: #6E6E77; font-size: 12.5px; line-height: 1.6; }