:root {
  --m9-ink: #17231f;
  --m9-green: #1f5a45;
  --m9-green-dark: #153e31;
  --m9-accent: #d7a93d;
  --m9-paper: #f7f4ed;
  --m9-line: #d9dfda;
  --m9-white: #ffffff;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--m9-ink);
  background: var(--m9-paper);
  font-family: Arial, "Helvetica Neue", sans-serif;
  font-size: 18px;
  line-height: 1.65;
}

a { color: var(--m9-green); }

img {
  display: block;
  width: 100%;
  height: auto;
}

.shell {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  background: var(--m9-green-dark);
  color: var(--m9-white);
  border-bottom: 4px solid var(--m9-accent);
}

.header-inner {
  min-height: 86px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--m9-white);
  text-decoration: none;
  font-weight: 700;
}

.brand img {
  width: 64px;
  height: 64px;
  object-fit: contain;
}

.header-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.header-nav a { color: var(--m9-white); text-decoration: none; }
.header-nav a:hover { text-decoration: underline; }

.button {
  display: inline-block;
  padding: 12px 20px;
  color: var(--m9-white);
  background: var(--m9-green);
  border-radius: 6px;
  text-decoration: none;
  font-weight: 700;
}

.button:hover { background: var(--m9-green-dark); }
.site-header .button { background: var(--m9-accent); color: #1d211f; }

.hero {
  padding: 70px 0 54px;
  background: linear-gradient(135deg, #e7eee9 0%, #f7f4ed 60%);
}

.breadcrumbs {
  margin-bottom: 18px;
  color: #53625c;
  font-size: 15px;
}

.breadcrumbs a { color: inherit; }

.eyebrow {
  margin: 0 0 12px;
  color: var(--m9-green);
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: 14px;
}

h1, h2, h3 {
  color: #15201c;
  line-height: 1.2;
}

h1 {
  max-width: 900px;
  margin: 0 0 24px;
  font-size: clamp(38px, 6vw, 68px);
  letter-spacing: -.035em;
}

h2 { margin-top: 48px; font-size: clamp(28px, 4vw, 40px); }
h3 { margin-top: 30px; font-size: 24px; }

.lead {
  max-width: 820px;
  margin: 0;
  color: #3d4b46;
  font-size: 22px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 24px;
  color: #53625c;
  font-size: 15px;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(240px, 1fr);
  gap: 48px;
  align-items: start;
  padding: 54px 0 76px;
}

.article-body {
  padding: 38px;
  background: var(--m9-white);
  border: 1px solid var(--m9-line);
  border-radius: 10px;
}

.article-body > :first-child { margin-top: 0; }
.article-body p { margin: 0 0 20px; }
.article-body li { margin-bottom: 9px; }

.article-body figure {
  margin: 32px 0;
}

.article-body figcaption {
  margin-top: 9px;
  color: #596660;
  font-size: 14px;
}

.callout {
  margin: 30px 0;
  padding: 24px 26px;
  background: #edf5f0;
  border-left: 5px solid var(--m9-green);
}

.checklist {
  padding: 24px 28px 20px 46px;
  background: #fbfaf6;
  border: 1px solid var(--m9-line);
  border-radius: 8px;
}

.comparison {
  width: 100%;
  margin: 26px 0;
  border-collapse: collapse;
  font-size: 16px;
}

.comparison th,
.comparison td {
  padding: 13px 14px;
  text-align: left;
  vertical-align: top;
  border: 1px solid var(--m9-line);
}

.comparison th { background: #e7eee9; }

.sidebar {
  position: sticky;
  top: 24px;
}

.side-card {
  margin-bottom: 20px;
  padding: 24px;
  background: var(--m9-white);
  border: 1px solid var(--m9-line);
  border-radius: 10px;
}

.side-card h2 { margin: 0 0 14px; font-size: 23px; }
.side-card ul { margin: 0; padding-left: 22px; }
.side-card p { margin: 0 0 16px; }

.cta {
  padding: 42px;
  color: var(--m9-white);
  background: var(--m9-green-dark);
  border-radius: 10px;
}

.cta h2 { margin: 0 0 16px; color: var(--m9-white); }
.cta a:not(.button) { color: var(--m9-white); }
.cta .button { background: var(--m9-accent); color: #1d211f; }

.faq details {
  padding: 18px 0;
  border-bottom: 1px solid var(--m9-line);
}

.faq summary { cursor: pointer; font-weight: 700; }
.faq details p { margin: 12px 0 0; }

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px;
  padding: 54px 0 76px;
}

.article-card {
  overflow: hidden;
  background: var(--m9-white);
  border: 1px solid var(--m9-line);
  border-radius: 10px;
}

.article-card img { aspect-ratio: 16 / 9; object-fit: cover; }
.article-card-body { padding: 26px; }
.article-card h2 { margin: 8px 0 14px; font-size: 28px; }
.article-card p { margin: 0 0 20px; }
.article-card time { color: #607069; font-size: 14px; }

.site-footer {
  padding: 36px 0;
  color: #dce7e1;
  background: #102e25;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
}

.site-footer a { color: var(--m9-white); }

@media (max-width: 850px) {
  body { font-size: 17px; }
  .header-inner { padding: 14px 0; align-items: flex-start; }
  .header-nav { justify-content: flex-end; gap: 12px; }
  .header-nav .button { display: none; }
  .content-grid { grid-template-columns: 1fr; gap: 24px; }
  .sidebar { position: static; }
}

@media (max-width: 620px) {
  .shell { width: min(100% - 24px, 1120px); }
  .brand span { display: none; }
  .header-nav { font-size: 15px; }
  .hero { padding: 48px 0 38px; }
  .lead { font-size: 19px; }
  .article-body { padding: 24px 20px; }
  .cards { grid-template-columns: 1fr; }
  .comparison { font-size: 14px; }
  .comparison th, .comparison td { padding: 9px 8px; }
  .cta { padding: 28px 22px; }
}