:root {
  --bg: #f5f2ea;
  --bg-raised: #eae6dc;
  --card: #ffffff;
  --line: #d5cfc3;
  --line-strong: #b9b0a3;
  --bone: #172630;
  --dim: #52616a;
  --faint: #78858b;
  --signal: #c93622;
  --signal-bright: #b62d1c;
  --signal-deep: #a82718;
  --ember: #a65f0b;
  --green: #147a43;
  --radius: 3px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--bone);
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

a:hover {
  color: var(--signal-bright);
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  transform: translateY(-160%);
  background: var(--bone);
  color: var(--bg);
  padding: 10px 14px;
  border-radius: var(--radius);
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

.wrap {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245, 242, 234, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 30px rgba(38, 47, 53, 0.05);
}

.topbar-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--bone);
  text-decoration: none;
}

.brand:hover {
  color: var(--bone);
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 5px;
  background: var(--signal);
  color: #ffffff;
  font-family: "Oswald", sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: -0.04em;
}

.brand-name {
  font-family: "Oswald", sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1;
  text-transform: uppercase;
}

.brand-name small {
  display: block;
  margin-top: 4px;
  color: var(--faint);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.52rem;
  font-weight: 500;
  letter-spacing: 0.2em;
}

.topnav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.topnav a {
  color: var(--dim);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
}

.topnav a:hover {
  color: var(--bone);
}

.topnav .support-link {
  padding: 8px 15px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--bone);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--faint);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 5px rgba(229, 52, 30, 0.12);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 82px 0 72px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse 54% 120% at 25% -35%, rgba(201, 54, 34, 0.16), transparent 70%),
    radial-gradient(ellipse 48% 100% at 82% -40%, rgba(166, 95, 11, 0.12), transparent 72%),
    repeating-linear-gradient(0deg, transparent 0 43px, rgba(23, 38, 48, 0.035) 43px 44px),
    repeating-linear-gradient(90deg, transparent 0 43px, rgba(23, 38, 48, 0.035) 43px 44px);
}

.hero h1 {
  max-width: 920px;
  margin: 18px 0 20px;
  font-family: "Oswald", sans-serif;
  font-size: clamp(2.5rem, 6vw, 4.8rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 0.98;
  text-transform: uppercase;
}

.hero p {
  max-width: 750px;
  margin: 0;
  color: var(--dim);
  font-size: 1.08rem;
}

.effective {
  display: block;
  margin-top: 24px;
  color: var(--faint);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.layout {
  display: grid;
  grid-template-columns: minmax(180px, 240px) minmax(0, 760px);
  gap: clamp(44px, 7vw, 92px);
  align-items: start;
  padding: 72px 0 100px;
}

.toc {
  position: sticky;
  top: 102px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-raised);
}

.toc strong {
  display: block;
  margin-bottom: 12px;
  color: var(--faint);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.63rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.toc ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.toc a {
  color: var(--dim);
  font-size: 0.82rem;
  line-height: 1.35;
  text-decoration: none;
}

.toc a:hover {
  color: var(--bone);
}

.content section {
  margin-bottom: 56px;
  scroll-margin-top: 100px;
}

.content h2 {
  margin: 0 0 16px;
  font-family: "Oswald", sans-serif;
  font-size: clamp(1.65rem, 3vw, 2.1rem);
  line-height: 1.1;
  text-transform: uppercase;
}

.content h3 {
  margin: 30px 0 10px;
  font-family: "Oswald", sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  text-transform: uppercase;
}

.content p,
.content li {
  color: var(--dim);
}

.content p {
  margin: 0 0 18px;
}

.content ul,
.content ol {
  margin: 0 0 20px;
  padding-left: 1.25rem;
}

.content li + li {
  margin-top: 8px;
}

.content strong {
  color: var(--bone);
}

.content a {
  color: var(--bone);
  text-decoration-color: var(--signal);
  text-underline-offset: 3px;
}

.content a:hover {
  color: var(--signal-bright);
}

.callout {
  margin-bottom: 48px;
  padding: 24px 26px;
  border: 1px solid rgba(229, 52, 30, 0.55);
  border-left: 4px solid var(--signal);
  border-radius: var(--radius);
  background: rgba(229, 52, 30, 0.07);
}

.callout h2,
.callout h3 {
  margin-top: 0;
  color: var(--bone);
}

.callout p:last-child {
  margin-bottom: 0;
}

.callout.neutral {
  border-color: var(--line-strong);
  border-left-color: var(--ember);
  background: rgba(242, 162, 60, 0.05);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 46px;
  padding: 11px 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--bone) !important;
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

.button.primary {
  border-color: var(--signal);
  background: var(--signal);
}

.button:hover {
  border-color: var(--signal-deep);
  background: var(--signal-deep);
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 22px 0;
}

.data-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.data-card h3 {
  margin: 0 0 8px;
}

.data-card p:last-child {
  margin-bottom: 0;
}

.steps {
  list-style: none;
  counter-reset: steps;
  padding: 0 !important;
}

.steps li {
  position: relative;
  min-height: 48px;
  padding-left: 62px;
  counter-increment: steps;
}

.steps li::before {
  content: counter(steps, decimal-leading-zero);
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--ember);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
}

.steps li + li {
  margin-top: 22px;
}

footer {
  border-top: 1px solid var(--line);
  background: var(--bg-raised);
  padding: 56px 0 38px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand p {
  max-width: 30rem;
  color: var(--faint);
  font-size: 0.83rem;
}

.footer-col h2 {
  margin: 0 0 14px;
  color: var(--faint);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.footer-col ul {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-col a {
  color: var(--dim);
  font-size: 0.82rem;
  text-decoration: none;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.footer-bottom p {
  max-width: 650px;
  margin: 0;
  color: var(--faint);
  font-size: 0.73rem;
}

::selection {
  background: var(--signal);
  color: white;
}

:focus-visible {
  outline: 2px solid var(--ember);
  outline-offset: 3px;
}

@media (max-width: 820px) {
  .topnav a:not(.support-link) {
    display: none;
  }

  .layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .toc {
    position: static;
  }

  .toc ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 16px;
  }

  .wrap {
    width: min(100% - 32px, 1180px);
  }

  .hero {
    padding: 62px 0 56px;
  }

  .layout {
    padding: 54px 0 72px;
  }

  .toc ul,
  .data-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-brand {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}