:root {
  --ink: #111c31;
  --muted: #657086;
  --line: #ccd2da;
  --paper: #fbfaf7;
  --white: #fff;
  --green: #1f6b59;
  --green-soft: #e3f1ec;
  --violet: #7051e8;
  --violet-soft: #eee9ff;
  --coral: #ff9f76;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.68;
}
a { color: inherit; }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 1rem; top: 1rem; z-index: 10; padding: .7rem 1rem; background: #fff; }
.content-shell { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }
.content-header {
  position: sticky; top: 0; z-index: 5;
  background: rgba(251,250,247,.92); border-bottom: 1px solid rgba(17,28,49,.12);
  backdrop-filter: blur(16px);
}
.content-header-inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.content-brand { display: inline-flex; align-items: center; text-decoration: none; font-size: 1.35rem; font-weight: 800; letter-spacing: -.04em; }
.content-brand img { width: 38px; height: 38px; object-fit: contain; margin-right: 1px; }
.content-brand span { color: var(--violet); }
.content-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; font-size: .91rem; font-weight: 650; }
.content-nav a { text-decoration: none; }
.content-nav a:hover, .content-nav a:focus { color: var(--green); }
.content-nav .content-cta { padding: .58rem .95rem; color: #fff; background: var(--ink); border-radius: 999px; }
.article-hero { padding: clamp(68px, 10vw, 124px) 0 68px; border-bottom: 1px solid var(--line); }
.breadcrumbs { margin: 0 0 28px; color: var(--muted); font-size: .82rem; font-weight: 650; }
.breadcrumbs a { text-decoration: none; }
.eyebrow { margin: 0 0 16px; color: var(--green); font-size: .78rem; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.article-hero h1 { max-width: 950px; margin: 0; font-size: clamp(2.35rem, 6vw, 5rem); line-height: 1.01; letter-spacing: -.062em; }
.article-hero .lede { max-width: 780px; margin: 28px 0 0; color: var(--muted); font-size: clamp(1.08rem, 2vw, 1.32rem); }
.article-meta { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 28px; color: var(--muted); font-size: .82rem; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 290px; gap: clamp(50px, 8vw, 108px); padding-block: 72px 96px; }
.article-body { min-width: 0; }
.article-body h2 { margin: 74px 0 18px; font-size: clamp(1.75rem, 3vw, 2.65rem); line-height: 1.13; letter-spacing: -.045em; }
.article-body h2:first-child { margin-top: 0; }
.article-body h3 { margin: 34px 0 10px; font-size: 1.28rem; line-height: 1.25; }
.article-body p, .article-body li { color: #384258; font-size: 1.02rem; }
.article-body strong { color: var(--ink); }
.article-body ul, .article-body ol { padding-left: 1.35rem; }
.article-body li + li { margin-top: .62rem; }
.article-aside { align-self: start; position: sticky; top: 108px; }
.toc, .proof-card { padding: 24px; background: var(--white); border: 1px solid var(--line); border-radius: 22px; box-shadow: 0 18px 50px rgba(17,28,49,.05); }
.toc p { margin: 0 0 13px; font-size: .72rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--green); }
.toc a { display: block; padding: 7px 0; color: var(--muted); font-size: .88rem; font-weight: 650; line-height: 1.35; text-decoration: none; }
.toc a:hover { color: var(--ink); }
.proof-card { margin-top: 18px; background: var(--ink); color: #fff; border-color: var(--ink); }
.proof-card strong { display: block; font-size: 1.08rem; }
.proof-card p { margin: 8px 0 0; color: #cbd2df; font-size: .86rem; }
.callout { margin: 36px 0; padding: 28px 30px; background: linear-gradient(135deg, var(--green-soft), #f3f0ff); border: 1px solid #b8cdc7; border-radius: 24px; }
.callout h3 { margin-top: 0; }
.comparison { width: 100%; margin: 32px 0; border-collapse: separate; border-spacing: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.comparison th, .comparison td { padding: 17px 18px; text-align: left; vertical-align: top; border-bottom: 1px solid #e1e4e9; }
.comparison th { background: #f1f2f3; color: var(--ink); font-size: .85rem; }
.comparison td { color: #455065; font-size: .92rem; }
.comparison tr:last-child td { border-bottom: 0; }
.step-grid, .guide-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; margin: 28px 0; }
.step-card, .guide-card { padding: 26px; background: #fff; border: 1px solid var(--line); border-radius: 22px; }
.step-card span { display: grid; place-items: center; width: 35px; height: 35px; border-radius: 12px; background: var(--violet-soft); color: var(--violet); font-weight: 800; }
.step-card h3, .guide-card h2 { margin: 18px 0 8px; font-size: 1.18rem; }
.step-card p, .guide-card p { margin: 0; color: var(--muted); font-size: .92rem; }
.guide-hero { padding: clamp(72px, 10vw, 120px) 0 52px; }
.guide-hero h1 { margin: 0; max-width: 860px; font-size: clamp(2.5rem, 6vw, 5.2rem); line-height: 1; letter-spacing: -.065em; }
.guide-hero .lede { max-width: 720px; margin-top: 26px; color: var(--muted); font-size: 1.18rem; }
.guide-grid { grid-template-columns: repeat(3, minmax(0,1fr)); padding-bottom: 100px; }
.guide-card { display: flex; flex-direction: column; min-height: 310px; text-decoration: none; transition: transform .2s ease, border-color .2s ease; }
.guide-card:hover { transform: translateY(-4px); border-color: #8f98a5; }
.guide-card .tag { color: var(--green); font-size: .72rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.guide-card h2 { font-size: 1.48rem; line-height: 1.15; }
.guide-card .arrow { margin-top: auto; padding-top: 24px; color: var(--ink); font-weight: 750; }
.faq { margin-top: 68px; }
.faq details { border-top: 1px solid var(--line); padding: 19px 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; color: var(--ink); font-size: 1.02rem; font-weight: 750; }
.faq details p { margin-bottom: 4px; }
.article-cta { margin-top: 76px; padding: 38px; border-radius: 28px; background: var(--ink); color: #fff; }
.article-cta h2 { margin: 0; color: #fff; }
.article-cta p { color: #ccd3df; }
.article-cta a { display: inline-flex; margin-top: 12px; padding: .76rem 1.1rem; border-radius: 999px; background: #fff; color: var(--ink); font-weight: 750; text-decoration: none; }
.content-footer { padding: 34px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: .84rem; }
.content-footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px 28px; }
.content-footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
.content-footer a { text-decoration: none; }

@media (max-width: 820px) {
  .content-header-inner { align-items: flex-start; padding-block: 16px; }
  .content-nav { justify-content: flex-end; gap: 10px 15px; }
  .article-layout { grid-template-columns: 1fr; }
  .article-aside { position: static; order: -1; }
  .toc a { display: inline-block; margin-right: 14px; }
  .guide-grid { grid-template-columns: 1fr; }
}
@media (max-width: 580px) {
  .content-shell { width: min(100% - 28px, 1120px); }
  .content-header-inner { display: block; }
  .content-nav { justify-content: flex-start; margin-top: 10px; font-size: .82rem; }
  .article-hero { padding-top: 55px; }
  .step-grid { grid-template-columns: 1fr; }
  .comparison { display: block; overflow-x: auto; }
}