:root {
  color-scheme: light;
  --ink: #203c32;
  --muted: #486157;
  --green: #1d6658;
  --green-dark: #154c41;
  --paper: #f3f5ef;
  --surface: #ffffff;
  --tint: #e5efe7;
  --line: #cad9ce;
  --radius: 24px;
}

* { box-sizing: border-box; }

html { font-size: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  overflow-wrap: break-word;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--green); text-underline-offset: .2em; }
a:hover { color: var(--green-dark); }
a:focus-visible { outline: 3px solid var(--green); outline-offset: 4px; border-radius: 4px; }
img { max-width: 100%; height: auto; }

.skip-link {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 5;
  padding: 12px 18px;
  background: var(--surface);
  border: 2px solid var(--green);
  border-radius: 10px;
  transform: translateY(-200%);
}
.skip-link:focus { transform: translateY(0); }

.container { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
.site-header { border-bottom: 1px solid var(--line); background: var(--surface); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 18px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 1.4rem; font-weight: 750; text-decoration: none; color: var(--ink); }
.brand img { width: 40px; height: 40px; border-radius: 12px; }
.site-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; }
.site-nav a { display: inline-flex; align-items: center; min-height: 44px; padding: 8px 12px; border-radius: 10px; font-size: .94rem; font-weight: 600; text-decoration: none; }
.site-nav a[aria-current="page"] { background: var(--tint); }
.site-nav .nav-app { border: 1px solid var(--green); margin-left: 4px; }

main { padding-bottom: 64px; }
main:focus { outline: none; }
.hero { padding-top: 64px; padding-bottom: 40px; }
.hero h1 { max-width: 850px; margin: 16px 0 20px; font-size: clamp(2.1rem, 5vw, 3.75rem); line-height: 1.12; letter-spacing: -.035em; text-wrap: balance; overflow-wrap: anywhere; }
.hero .lead { max-width: 780px; margin-block: 0 22px; color: var(--muted); font-size: 1.18rem; line-height: 1.7; }
.eyebrow { display: inline-block; margin: 0; padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); color: var(--green-dark); font-size: .85rem; font-weight: 650; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 22px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 50px; padding: 12px 22px; border: 1px solid var(--green); border-radius: 12px; background: var(--green); color: #ffffff; font-weight: 650; text-align: center; text-decoration: none; line-height: 1.45; }
.button:hover { background: var(--green-dark); color: #ffffff; }
.button:focus-visible { outline-color: var(--green-dark); }
.text-link { font-weight: 650; }
.hero-note { max-width: 780px; margin-top: 18px; color: var(--muted); font-size: .94rem; }

.section-heading { max-width: 760px; margin: 0 0 22px; font-size: clamp(1.5rem, 3vw, 2rem); line-height: 1.3; letter-spacing: -.02em; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-block: 0 40px; }
.feature-card { min-width: 0; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.feature-card .card-label { display: block; margin-bottom: 16px; color: var(--green); font-size: .85rem; font-weight: 750; }
.feature-card h2 { margin: 0 0 12px; font-size: 1.35rem; line-height: 1.3; }
.feature-card p { margin: 0 0 16px; color: var(--muted); }
.feature-card p:last-child { margin-bottom: 0; }

.start-panel { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 32px; align-items: center; padding: 32px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--tint); }
.start-panel h2 { margin-top: 0; }
.start-panel p { margin-top: 0; }
.steps { margin: 0; padding-left: 24px; }
.steps li { padding: 6px 0 6px 6px; }
.steps li::marker { color: var(--green); font-weight: 750; }

.breadcrumbs { padding-top: 24px; font-size: .9rem; color: var(--muted); }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; }
.breadcrumbs li + li::before { content: "/"; padding-right: 8px; color: var(--muted); }
.guide-hero { padding-top: 32px; }
.guide-hero h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); }
.reading-grid { display: grid; grid-template-columns: minmax(0, 2.2fr) minmax(0, 1fr); gap: 24px; align-items: start; }
.article { min-width: 0; padding: 32px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.article section + section { margin-top: 32px; padding-top: 28px; border-top: 1px solid var(--line); }
.article h2 { margin: 0 0 14px; font-size: 1.55rem; line-height: 1.35; letter-spacing: -.015em; }
.article p { margin: 0 0 16px; }
.article p:last-child { margin-bottom: 0; }
.example { margin-block: 20px; padding: 18px 20px; border-left: 4px solid var(--green); border-radius: 0 12px 12px 0; background: var(--paper); }
.example-label { margin-bottom: 4px !important; color: var(--green-dark); font-size: .85rem; font-weight: 750; }
.guide-aside { min-width: 0; display: grid; gap: 20px; }
.aside-panel { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--tint); }
.aside-panel h2 { margin: 0 0 12px; font-size: 1.2rem; line-height: 1.35; }
.aside-panel p { margin-top: 0; }
.aside-panel ul { margin-bottom: 0; padding-left: 20px; }
.aside-panel li { margin-top: 8px; }
.aside-panel .button { width: 100%; }
.related-links { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px 24px; }

.responsible-note, .responsible { margin-top: 32px; padding: 22px 26px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); }
.responsible-note p, .responsible p { margin: 0; }
.responsible-note p + p, .responsible p + p { margin-top: 8px; color: var(--muted); font-size: .95rem; }
.site-footer { padding-block: 32px; border-top: 1px solid var(--line); background: var(--surface); }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 20px 32px; }
.footer-brand { margin: 0; font-weight: 750; }
.footer-description { max-width: 520px; margin: 6px 0 0; color: var(--muted); font-size: .9rem; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.footer-nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: .9rem; }

@media (max-width: 900px) {
  .header-inner { flex-direction: column; align-items: flex-start; gap: 12px; }
  .site-nav { width: 100%; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { padding: 24px; }
  .reading-grid { grid-template-columns: 1fr; }
  .guide-aside { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .container { width: calc(100% - 32px); }
  .header-inner { padding-block: 14px; }
  .site-nav { gap: 4px; }
  .site-nav a { padding-inline: 8px; font-size: .88rem; }
  .site-nav .nav-app { margin-left: 0; }
  .hero { padding-top: 40px; padding-bottom: 32px; }
  .guide-hero { padding-top: 24px; }
  .hero .lead { font-size: 1.06rem; }
  .hero-actions { align-items: stretch; }
  .hero-actions .button { width: 100%; }
  .start-panel { grid-template-columns: 1fr; gap: 20px; padding: 24px; }
  .article { padding: 24px 20px; }
  .article h2 { font-size: 1.35rem; }
  .guide-aside { grid-template-columns: 1fr; }
  .responsible-note, .responsible { padding: 20px; }
  .footer-inner { flex-direction: column; gap: 16px; }
  main { padding-bottom: 40px; }
}

@media (forced-colors: active) {
  .button { border: 2px solid ButtonText; }
  a:focus-visible { outline-color: Highlight; }
}