/* Shared styles for SEO guide pages — nav matches landing light sticky header. */
:root {
  --paper: #e8edf2;
  --paper-deep: #d5dce6;
  --ink: #0d1b2a;
  --ink-soft: #3a4a5c;
  --forest: #1b4332;
  --forest-mid: #2d6a4f;
  --stamp: #ff6b35;
  --white: #fbfcfd;
  --line: rgba(13, 27, 42, 0.12);
  --display: "Fraunces", Georgia, serif;
  --sans: "Source Sans 3", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.55;
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(245, 183, 0, 0.16), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(255, 107, 53, 0.1), transparent 50%);
}
a { color: var(--forest-mid); text-decoration: underline; text-underline-offset: 2px; }
a:hover { color: var(--stamp); }
.wrap { max-width: 720px; margin: 0 auto; padding: 28px 22px 0; }

/* ---- site nav (same chrome as landing light sticky header) ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(232, 237, 242, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--ink);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 12px 22px;
}
.nav .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.nav .brand img { width: 34px; height: 34px; display: block; }
.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px 18px;
  font-size: 0.92rem;
  color: var(--ink-soft);
  font-weight: 600;
}
.nav-links a {
  text-decoration: none;
  color: inherit;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--forest); }
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--forest);
  color: var(--white);
  padding: 8px 12px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.78rem;
  white-space: nowrap;
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  text-decoration: none;
  transition: transform .15s ease, box-shadow .15s ease;
}
.nav-cta:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--ink);
  color: var(--white);
}
.nav-cta svg { width: 15px; height: 15px; flex-shrink: 0; }
.nav-toggle {
  display: none;
  background: none;
  border: 2px solid var(--ink);
  border-radius: 8px;
  padding: 6px;
  cursor: pointer;
  color: var(--ink);
}
@media (max-width: 800px) {
  .nav { position: relative; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--paper);
    border-bottom: 2px solid var(--ink);
    padding: 8px 22px 14px;
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
  }
  .nav-toggle { display: flex; }
  .nav-cta .cta-text { display: none; }
}

.kicker {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--stamp);
  margin-bottom: 10px;
}
h1 {
  font-family: var(--display);
  font-size: clamp(1.85rem, 4vw, 2.45rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}
.lede {
  font-size: 1.12rem;
  color: var(--ink-soft);
  margin-bottom: 28px;
}

.ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 36px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border: 2px solid var(--ink);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
}
.btn:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 var(--ink); color: var(--ink); }
.btn-primary { background: var(--stamp); color: #fff; border-color: var(--ink); }
.btn-primary:hover { color: #fff; }
.btn-ghost { background: #fff; }

h2 {
  font-family: var(--display);
  font-size: 1.35rem;
  margin: 32px 0 12px;
}
h3 { font-family: var(--display); font-size: 1.05rem; margin: 20px 0 6px; color: var(--ink); }
p, li { color: var(--ink-soft); margin-bottom: 12px; }
ul, ol { padding-left: 1.2rem; margin-bottom: 16px; }
li { margin-bottom: 8px; }
code, .mono {
  font-family: var(--mono);
  font-size: 0.88em;
  background: rgba(13, 27, 42, 0.06);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}
pre {
  font-family: var(--mono);
  font-size: 0.85rem;
  background: var(--ink);
  color: #e8edf2;
  padding: 14px 16px;
  overflow-x: auto;
  margin: 14px 0 20px;
  border-radius: 2px;
}
.related {
  margin: 40px 0 24px;
  padding: 20px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.55);
}
.related h2 { margin-top: 0; }
.related ul { margin-bottom: 0; }

.foot {
  margin: 48px 0 32px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
  color: var(--ink-soft);
}
.foot a { color: var(--ink-soft); }

table.diff { width: 100%; border-collapse: collapse; margin: 10px 0 8px; font-size: 0.92rem; }
table.diff th, table.diff td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); color: var(--ink-soft); }
table.diff th { color: var(--ink); }
.note { font-size: 0.85rem; }

/* ---- 404 vanity “match” + reel animation ---- */
.match-card {
  margin: 8px 0 28px;
  padding: 20px 18px;
  border: 2px solid var(--ink);
  background: #fff;
  box-shadow: 6px 6px 0 var(--ink);
}
.match-card .match-ok {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--forest-mid);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 12px;
  min-height: 1.2em;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .35s ease, transform .35s ease;
}
.match-card .match-ok.is-on {
  opacity: 1;
  transform: none;
}
.match-card .addr {
  font-family: var(--mono);
  font-size: clamp(0.95rem, 2.8vw, 1.15rem);
  line-height: 1.55;
  word-break: break-all;
  color: var(--ink);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}
.match-card .addr .ch {
  display: inline-block;
  min-width: 0.62em;
  text-align: center;
}
.match-card .addr .ch.spin {
  color: var(--ink-soft);
  opacity: 0.72;
  animation: match-char-flicker 0.11s steps(2) infinite;
}
.match-card .addr .ch.lock {
  color: var(--ink);
  opacity: 1;
  animation: none;
}
.match-card .addr .ch.hit {
  background: var(--stamp);
  color: #fff;
  font-size: 1.45em;
  font-weight: 700;
  line-height: 1;
  padding: 0.08em 0.1em;
  margin: 0 0.02em;
  border-radius: 3px;
  vertical-align: -0.08em;
  box-shadow: 2px 2px 0 var(--ink);
  animation: match-hit-pop 0.45s cubic-bezier(0.2, 1.4, 0.4, 1) both;
}
@keyframes match-char-flicker {
  0%, 100% { transform: translateY(0); filter: none; }
  50% { transform: translateY(-1px); filter: brightness(1.15); }
}
@keyframes match-hit-pop {
  0% { transform: scale(0.55); opacity: 0.4; }
  70% { transform: scale(1.12); }
  100% { transform: scale(1); opacity: 1; }
}
.match-card .meta {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin: 0;
}
@media (prefers-reduced-motion: reduce) {
  .match-card .match-ok { opacity: 1; transform: none; }
  .match-card .addr .ch.spin { animation: none; }
  .match-card .addr .ch.hit { animation: none; }
}