:root {
  color-scheme: light;
  --ink: #17211f;
  --muted: #68716f;
  --line: #dce2df;
  --soft: #f3f6f4;
  --paper: #ffffff;
  --green: #0f6b5b;
  --green-dark: #094d41;
  --green-soft: #dcefe9;
  --yellow: #f5c84c;
  --coral: #e6644a;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--paper);
}

a {
  color: var(--green-dark);
}

a:focus-visible {
  outline: 3px solid rgba(15, 107, 91, 0.25);
  outline-offset: 3px;
}

.guide-header {
  position: sticky;
  z-index: 10;
  top: 0;
  display: flex;
  min-height: 82px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 5vw;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
}

.guide-brand img {
  display: block;
  width: 126px;
  height: auto;
}

.guide-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.guide-nav a {
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.guide-nav a:hover {
  color: var(--green);
}

.guide-nav .tool-link {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  padding: 0 14px;
  color: #fff;
  border-radius: 5px;
  background: var(--ink);
}

.guide-hero {
  padding: 74px max(5vw, calc((100vw - 1120px) / 2)) 68px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(15, 107, 91, 0.055) 1px, transparent 1px) 0 0 / 48px 48px,
    linear-gradient(rgba(15, 107, 91, 0.055) 1px, transparent 1px) 0 0 / 48px 48px,
    #f7faf8;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: 13px;
}

.breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
}

.guide-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: clamp(44px, 8vw, 110px);
  align-items: end;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
}

.guide-hero h1 {
  max-width: 820px;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(48px, 7vw, 80px);
  line-height: 0.98;
}

.guide-lead {
  max-width: 720px;
  margin: 26px 0 0;
  color: #53605d;
  font-size: 20px;
  line-height: 1.65;
}

.guide-mark {
  width: 100%;
  height: auto;
}

.guide-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: clamp(54px, 8vw, 100px);
  width: min(1120px, 90vw);
  margin: 0 auto;
  padding: 72px 0 84px;
}

.guide-article {
  min-width: 0;
}

.guide-article section {
  padding: 0 0 44px;
  margin: 0 0 44px;
  border-bottom: 1px solid var(--line);
}

.guide-article section:last-child {
  margin-bottom: 0;
  border-bottom: 0;
}

.guide-article h2 {
  margin: 0 0 18px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(32px, 4vw, 46px);
  line-height: 1.08;
}

.guide-article h3 {
  margin: 28px 0 10px;
  font-size: 19px;
}

.guide-article p,
.guide-article li {
  color: #3f4c48;
  font-size: 17px;
  line-height: 1.75;
}

.guide-article p {
  margin: 0 0 18px;
}

.guide-article ul,
.guide-article ol {
  display: grid;
  gap: 12px;
  padding-left: 24px;
}

.guide-article strong {
  color: var(--ink);
}

.guide-aside {
  align-self: start;
  position: sticky;
  top: 112px;
  padding-left: 22px;
  border-left: 4px solid var(--yellow);
}

.guide-aside h2 {
  margin: 0 0 14px;
  font-size: 16px;
}

.guide-aside ol,
.guide-aside ul {
  display: grid;
  gap: 12px;
  padding-left: 20px;
  margin: 0;
}

.guide-aside li,
.guide-aside a {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.guide-aside a:hover {
  color: var(--green);
}

.tool-cta {
  padding: 64px 5vw;
  color: #fff;
  background: #17211f;
}

.tool-cta-inner {
  display: flex;
  width: min(1120px, 100%);
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.tool-cta h2 {
  max-width: 700px;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(34px, 4vw, 50px);
  line-height: 1.05;
}

.tool-cta p {
  max-width: 650px;
  margin: 14px 0 0;
  color: #afbbb7;
  line-height: 1.6;
}

.tool-cta a {
  display: inline-flex;
  min-height: 50px;
  flex: 0 0 auto;
  align-items: center;
  padding: 0 20px;
  color: #fff;
  border-radius: 5px;
  background: var(--coral);
  font-weight: 800;
  text-decoration: none;
}

.related-guides {
  padding: 62px 5vw;
  background: var(--soft);
}

.related-inner {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.related-inner h2 {
  margin: 0 0 22px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 34px;
}

.related-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.related-links a {
  display: flex;
  min-height: 74px;
  align-items: center;
  padding-right: 22px;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  font-weight: 750;
  text-decoration: none;
}

.related-links a:hover {
  color: var(--green);
}

.guide-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 5vw;
  color: #8f9996;
  background: #17211f;
  font-size: 12px;
}

.guide-footer a {
  color: #c7d2ce;
  text-decoration: none;
}

@media (max-width: 820px) {
  .guide-nav a:not(.tool-link) {
    display: none;
  }

  .guide-hero-inner {
    grid-template-columns: 1fr;
  }

  .guide-mark {
    width: 180px;
  }

  .guide-content {
    grid-template-columns: 1fr;
  }

  .guide-aside {
    position: static;
    order: -1;
  }

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

  .related-links {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .guide-header {
    min-height: 68px;
    padding: 0 16px;
  }

  .guide-brand img {
    width: 94px;
  }

  .guide-hero {
    padding: 46px 16px 52px;
  }

  .guide-hero h1 {
    font-size: 48px;
  }

  .guide-lead {
    font-size: 17px;
  }

  .guide-content {
    width: calc(100vw - 32px);
    padding: 52px 0;
  }

  .guide-article p,
  .guide-article li {
    font-size: 16px;
  }

  .tool-cta,
  .related-guides {
    padding-right: 16px;
    padding-left: 16px;
  }

  .guide-footer {
    align-items: center;
    flex-direction: column;
    text-align: center;
  }
}