:root {
  color-scheme: light;
  --ink: #141210;
  --paper: #f5f0e8;
  --panel: #fffaf1;
  --muted: #6f675f;
  --line: #dfd2c1;
  --charcoal: #26211d;
  --signal: #ef5b2a;
  --mint: #a6d9cf;
  --blue: #b9d7f1;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(20, 18, 16, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(20, 18, 16, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 42px 42px;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.55;
}

header,
main {
  width: min(1080px, 100%);
  margin: 0 auto;
  padding: 0 18px;
}

header {
  padding-top: clamp(32px, 8vw, 76px);
  padding-bottom: 28px;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

nav a,
.button-link {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  padding: 0 12px;
  color: inherit;
  background: var(--panel);
  border: 2px solid var(--ink);
  border-radius: 8px;
  box-shadow: 3px 3px 0 var(--ink);
  font-size: 14px;
  font-weight: 900;
  text-decoration: none;
}

.badge {
  display: inline-block;
  margin-bottom: 18px;
  padding: 7px 10px;
  background: var(--mint);
  border: 2px solid var(--ink);
  border-radius: 8px;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

h1 {
  max-width: 900px;
  margin: 0 0 14px;
  font-size: clamp(42px, 7vw, 82px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin: 0 0 14px;
  font-size: clamp(30px, 5vw, 54px);
  line-height: 1;
}

h3 {
  margin: 28px 0 10px;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.05;
}

h4 {
  margin: 22px 0 8px;
  font-size: 19px;
}

p,
li {
  color: #403a34;
  font-size: 17px;
}

.lead,
.section-intro {
  max-width: 850px;
  color: #4d463f;
  font-size: clamp(18px, 2vw, 22px);
}

.nav-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
}

.nav-grid a,
.script,
.rule-card,
.ladder-step {
  background: var(--panel);
  border: 2px solid var(--ink);
  border-radius: 8px;
  box-shadow: 5px 5px 0 var(--ink);
}

.nav-grid a {
  display: grid;
  gap: 8px;
  min-height: 142px;
  padding: 18px;
  color: inherit;
  font-size: 24px;
  font-weight: 900;
  text-decoration: none;
}

.nav-grid span {
  color: var(--muted);
  font-size: 15px;
  font-weight: 700;
}

section {
  padding: clamp(32px, 6vw, 62px) 0;
  border-top: 2px solid var(--line);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.call-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.42fr);
  gap: 18px;
  align-items: start;
}

.call-main,
.call-sidebar {
  display: grid;
  gap: 16px;
}

.call-sidebar {
  position: sticky;
  top: 18px;
  max-height: calc(100vh - 36px);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-right: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--charcoal) transparent;
}

.call-sidebar::-webkit-scrollbar {
  width: 10px;
}

.call-sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.call-sidebar::-webkit-scrollbar-thumb {
  background: var(--charcoal);
  border: 3px solid var(--paper);
  border-radius: 999px;
}

.script,
.rule-card,
.ladder-step {
  margin: 14px 0;
  padding: 18px;
}

.script p:last-child,
.rule-card p:last-child,
.ladder-step p:last-child {
  margin-bottom: 0;
}

.script-label {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--signal);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.dark {
  padding: 22px;
  color: #fffaf1;
  background: var(--charcoal);
  border-radius: 8px;
}

.reminder-box {
  margin: 0 0 18px;
  padding: 18px;
  color: var(--ink);
  background: #f6c84f;
  border: 3px solid var(--ink);
  border-radius: 8px;
  box-shadow: 6px 6px 0 var(--ink);
}

.reminder-box strong {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
}

.reminder-box p {
  margin: 0;
  color: var(--ink);
  font-size: 18px;
  font-weight: 800;
}

.dark h2,
.dark h3,
.dark p,
.dark li {
  color: #fffaf1;
}

.dark p,
.dark li {
  opacity: 0.82;
}

.ladder {
  display: grid;
  gap: 14px;
  counter-reset: step;
}

.ladder-step {
  position: relative;
  padding-left: 72px;
}

.ladder-step::before {
  position: absolute;
  left: 18px;
  top: 18px;
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  background: var(--blue);
  border: 2px solid var(--ink);
  border-radius: 50%;
  content: counter(step);
  counter-increment: step;
  font-weight: 900;
}

.dos {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

ul {
  padding-left: 22px;
}

a {
  color: inherit;
  font-weight: 900;
  text-underline-offset: 4px;
}

@media (max-width: 760px) {
  .nav-grid,
  .grid-2,
  .dos,
  .call-layout {
    grid-template-columns: 1fr;
  }

  header {
    padding-top: 26px;
  }

  nav {
    position: sticky;
    top: 0;
    z-index: 3;
    margin: 0 -18px 22px;
    padding: 10px 18px;
    background: rgba(245, 240, 232, 0.96);
    border-bottom: 2px solid var(--ink);
  }

  nav a {
    min-height: 38px;
    font-size: 13px;
  }

  .call-sidebar {
    position: static;
    max-height: none;
    overflow: visible;
    padding-right: 0;
  }

  .nav-grid a {
    min-height: auto;
  }

  .ladder-step {
    padding-left: 18px;
    padding-top: 66px;
  }
}