:root {
  --ink: #171a1d;
  --paper: #f7f5f0;
  --teal: #0e6b5c;
  --teal-deep: #0a4d42;
  --teal-pale: #e5f0ec;
  --coin: #c98a2c;
  --coin-bright: #e0a63f;
  --panel: #10201d;
  --rule: rgba(23, 26, 29, 0.12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Poppins", sans-serif;
  font-weight: 400;
  line-height: 1.7;
  scroll-margin-top: 120px;
}

.hero {
  background: var(--panel);
  color: #eef4f1;
  padding: 72px 24px 96px;
}

.hero-inner {
  max-width: 1180px;
  margin: 0 auto;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--coin-bright);
  font-weight: 600;
  margin-bottom: 20px;
}

.eyebrow::before {
  content: "";
  width: 20px;
  height: 1px;
  background: var(--coin-bright);
  display: inline-block;
}

h1 {
  font-weight: 600;
  font-size: clamp(32px, 4.4vw, 52px);
  line-height: 1.1;
  margin: 0 0 22px;
  max-width: 18ch;
  letter-spacing: -0.5px;
}

h1 .accent { color: var(--coin-bright); }

.lede {
  font-size: 18px;
  font-weight: 300;
  color: #cfd8d5;
  max-width: 58ch;
  margin: 0;
}

.body-grid {
  max-width: 1180px;
  margin: 0 auto;
  padding: 56px 24px 96px;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 56px;
  align-items: start;
  color: #2b302e;
}

nav.rail {
  position: sticky;
  top: 110px;
  align-self: start;
}

.rail-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--teal-deep);
  margin-bottom: 14px;
}

.rail ol {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  border-left: 2px solid var(--rule);
}

.rail ol li a {
  display: block;
  padding: 8px 0 8px 18px;
  margin-left: -2px;
  border-left: 2px solid transparent;
  font-size: 14px;
  font-weight: 500;
  color: #4a5350;
  text-decoration: none;
}

.rail ol li a:hover {
  border-left-color: var(--coin);
  color: var(--teal-deep);
}

.rail ul.plain {
  list-style: none;
  margin: 0;
  padding: 0;
}

.rail ul.plain li a {
  display: block;
  padding: 6px 0;
  font-size: 13.5px;
  color: #6a706d;
  text-decoration: none;
}

.rail ul.plain li a:hover { color: var(--teal-deep); }

article h2 {
  font-weight: 600;
  font-size: 24px;
  margin: 44px 0 16px;
  color: var(--teal-deep);
  scroll-margin-top: 120px;
}

article > h2:first-child { margin-top: 0; }

.step-block {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 18px;
  margin: 44px 0 16px;
  scroll-margin-top: 120px;
}

.step-num {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--teal-pale);
  color: var(--teal-deep);
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-block h2 { margin: 0; align-self: center; }

.step-body { grid-column: 2 / 3; }

p { margin: 0 0 18px; font-size: 16px; font-weight: 400; }

.callout {
  margin: 36px 0;
  padding: 22px 24px;
  background: var(--teal-pale);
  border-radius: 10px;
  font-size: 15px;
  display: flex;
  gap: 14px;
}

.callout .mark {
  flex-shrink: 0;
  color: var(--teal);
  font-weight: 700;
  font-size: 18px;
}

.callout strong { color: var(--teal-deep); font-weight: 600; }

.faq { margin-top: 16px; }

.faq-item {
  padding: 20px 0;
  border-top: 1px solid var(--rule);
}

.faq-item:last-child { border-bottom: 1px solid var(--rule); }

.faq-q {
  font-weight: 600;
  font-size: 16px;
  color: var(--teal-deep);
  margin: 0 0 6px;
}

.faq-a { margin: 0; color: #2b302e; font-size: 16px; }

.conclusion {
  margin-top: 48px;
  padding: 32px;
  background: var(--panel);
  color: #eef4f1;
  border-radius: 14px;
}

.conclusion h2 {
  color: var(--coin-bright) !important;
  margin-top: 0 !important;
  font-weight: 600;
}

.conclusion p { color: #d3ddd9; margin-bottom: 0; font-size: 16px; }

.footnote {
  margin-top: 48px;
  font-size: 12.5px;
  color: #6a706d;
  text-align: center;
}

@media (max-width: 860px) {
  .body-grid {
    grid-template-columns: 1fr;
    padding: 40px 18px 64px;
  }
  nav.rail {
    position: static;
    display: flex;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--rule);
    margin-bottom: 12px;
  }
  .rail-label { display: none; }
  .rail ol {
    display: flex;
    gap: 4px;
    border-left: none;
    margin: 0;
    white-space: nowrap;
  }
  .rail ol li a {
    border-left: none;
    padding: 6px 12px;
    background: var(--teal-pale);
    border-radius: 999px;
    color: var(--teal-deep);
    margin-left: 0;
  }
  .rail ul.plain { display: none; }
  .step-block { grid-template-columns: 32px 1fr; gap: 12px; }
  .step-num { width: 32px; height: 32px; font-size: 13px; border-radius: 8px; }
  .conclusion { padding: 22px; }
}