:root {
  --bg: #f7f4ef;
  --paper: #fffdf8;
  --ink: #20211f;
  --muted: #62665f;
  --line: #d8d1c4;
  --accent: #2b6f6c;
  --accent-strong: #184f4d;
  --warn: #8a4d11;
  --warn-bg: #fff2df;
  --code: #f0ece4;
  --shadow: 0 18px 44px rgba(40, 38, 34, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.6;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--accent);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(43, 111, 108, 0.35);
  outline-offset: 3px;
}

.shell {
  min-height: 100vh;
}

.topbar {
  background: rgba(247, 244, 239, 0.94);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
}

.topbar-inner {
  align-items: center;
  display: flex;
  gap: 18px;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1120px;
  padding: 14px 22px;
}

.brand {
  color: var(--ink);
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
  text-decoration: none;
  text-transform: uppercase;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.nav a,
.pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-size: 13px;
  padding: 7px 10px;
  text-decoration: none;
  transition: background 140ms ease, border-color 140ms ease, transform 140ms ease;
}

.nav a:hover,
.pill:hover {
  background: var(--paper);
  border-color: var(--accent);
  transform: translateY(-1px);
}

.hero {
  margin: 0 auto;
  max-width: 1120px;
  padding: 64px 22px 34px;
}

.eyebrow {
  color: var(--accent-strong);
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  margin: 0 0 12px;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.14;
  margin: 0;
}

h1 {
  font-size: clamp(38px, 6vw, 76px);
  max-width: 980px;
}

h2 {
  font-size: clamp(26px, 3vw, 42px);
  margin-top: 54px;
}

h3 {
  font-size: 22px;
  margin-top: 30px;
}

p {
  margin: 14px 0 0;
}

.lead {
  color: var(--muted);
  font-size: 21px;
  max-width: 780px;
}

.layout {
  display: grid;
  gap: 34px;
  grid-template-columns: minmax(0, 1fr) 280px;
  margin: 0 auto;
  max-width: 1120px;
  padding: 22px 22px 72px;
}

.content {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: clamp(24px, 5vw, 54px);
}

.aside {
  align-self: start;
  position: sticky;
  top: 74px;
}

.aside-box {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.aside h2 {
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-size: 14px;
  margin: 0 0 10px;
  text-transform: uppercase;
}

.aside ol,
.aside ul {
  margin: 0;
  padding-left: 18px;
}

.aside li {
  margin: 8px 0;
}

.guide-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  margin-top: 24px;
}

.guide-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  display: block;
  min-height: 170px;
  padding: 20px;
  text-decoration: none;
  transition: border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.guide-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.guide-card span {
  color: var(--accent-strong);
  display: block;
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 10px;
}

.guide-card h2 {
  font-size: 24px;
  margin: 0;
}

.guide-card p {
  color: var(--muted);
}

.callout,
.warning,
.checklist {
  border-radius: 8px;
  margin: 24px 0;
  padding: 18px 20px;
}

.callout {
  background: #e9f1ef;
  border: 1px solid #b8d4cf;
}

.warning {
  background: var(--warn-bg);
  border: 1px solid #edc891;
  color: #4a3217;
}

.checklist {
  background: #f5f2ec;
  border: 1px solid var(--line);
}

ul,
ol {
  margin: 12px 0 0;
  padding-left: 24px;
}

li {
  margin: 8px 0;
}

code,
.kbd {
  background: var(--code);
  border-radius: 4px;
  font-family: "Courier New", monospace;
  font-size: 0.95em;
  padding: 2px 5px;
}

.steps {
  counter-reset: step;
  list-style: none;
  padding-left: 0;
}

.steps li {
  border-top: 1px solid var(--line);
  counter-increment: step;
  margin: 0;
  padding: 18px 0 18px 44px;
  position: relative;
}

.steps li::before {
  color: var(--accent-strong);
  content: counter(step);
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-weight: 700;
  left: 0;
  position: absolute;
  top: 18px;
}

.flow {
  align-items: stretch;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(5, 1fr);
  margin: 28px 0;
}

.flow div {
  background: #e8e2d6;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-family: "Trebuchet MS", Verdana, sans-serif;
  min-height: 76px;
  padding: 14px;
  text-align: center;
}

.footer-nav {
  border-top: 1px solid var(--line);
  display: flex;
  gap: 12px;
  justify-content: space-between;
  margin-top: 54px;
  padding-top: 24px;
}

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

  .aside {
    position: static;
  }

  .topbar-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    justify-content: flex-start;
  }

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