:root {
  --ink: #0b1728;
  --muted: #53647a;
  --line: #d9e2ec;
  --paper: #ffffff;
  --soft: #eef6ff;
  --accent: #0877d1;
  --accent-dark: #07579a;
  --signal: #f1b928;
  --max: 980px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: #f4f7fb;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0;
}
a { color: var(--accent-dark); }
a:focus-visible { outline: 3px solid rgba(8,119,209,.28); outline-offset: 3px; }
.skip-link { position: fixed; left: 12px; top: -80px; z-index: 100; background: var(--ink); color: #fff; padding: 10px 14px; }
.skip-link:focus { top: 12px; }
.site-header { background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); }
.nav { width: min(var(--max), calc(100% - 32px)); min-height: 68px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 800; text-decoration: none; }
.brand-mark { width: 36px; height: 36px; display: grid; place-items: center; background: #086fc1; color: #fff; border-radius: 8px; }
.nav-links { display: flex; align-items: center; gap: 16px; font-weight: 700; }
.lang-link { padding: 7px 10px; border: 1px solid var(--line); background: #fff; text-decoration: none; }
.hero { background: #07182c; color: #fff; border-bottom: 4px solid var(--signal); }
.hero-inner { width: min(var(--max), calc(100% - 32px)); margin: auto; padding: 62px 0 54px; }
.breadcrumbs { color: #b9c8d9; font-size: .92rem; margin-bottom: 26px; }
.breadcrumbs a { color: inherit; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 18px; color: #8dd4ff; font-size: .84rem; font-weight: 800; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 8px; height: 8px; background: var(--signal); border-radius: 50%; }
h1 { max-width: 850px; margin: 0; font-size: clamp(2.2rem, 5.8vw, 4.2rem); line-height: 1.1; letter-spacing: 0; }
.hero-copy { max-width: 760px; margin: 22px 0 0; color: #d8e3ef; font-size: 1.12rem; }
.outcome { width: min(var(--max), calc(100% - 32px)); margin: -24px auto 0; position: relative; display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); background: var(--paper); border: 1px solid var(--line); box-shadow: 0 14px 34px rgba(7,24,44,.12); }
.outcome div { padding: 22px 24px; }
.outcome div + div { border-left: 1px solid var(--line); }
.outcome strong { display: block; margin-bottom: 4px; font-size: 1.05rem; }
.outcome span { color: var(--muted); }
main { width: min(var(--max), calc(100% - 32px)); margin: 48px auto 72px; }
.article-section { padding: 36px 0; border-bottom: 1px solid var(--line); }
.article-section:last-child { border-bottom: 0; }
h2 { margin: 0 0 18px; font-size: clamp(1.55rem, 3vw, 2.15rem); line-height: 1.25; }
h3 { margin: 26px 0 8px; font-size: 1.15rem; }
p { max-width: 780px; }
.lead { font-size: 1.08rem; }
.comparison { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); }
.comparison th, .comparison td { padding: 15px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.comparison th { background: #eaf3fc; }
.comparison tr:last-child td { border-bottom: 0; }
.finding { margin: 26px 0; padding: 20px 22px; border-left: 4px solid var(--accent); background: var(--soft); font-weight: 700; }
.steps { margin: 22px 0 0; padding: 0; counter-reset: steps; list-style: none; }
.steps li { position: relative; padding: 0 0 26px 54px; counter-increment: steps; }
.steps li::before { content: counter(steps); position: absolute; left: 0; top: 0; width: 34px; height: 34px; display: grid; place-items: center; background: var(--ink); color: #fff; font-weight: 800; border-radius: 50%; }
.steps li + li::after { content: ""; position: absolute; left: 16px; top: -26px; height: 26px; border-left: 1px solid #9fb2c7; }
code { font-family: Consolas, "SFMono-Regular", monospace; }
.path { display: block; max-width: 100%; margin: 12px 0; padding: 14px 16px; overflow-x: auto; background: #07182c; color: #dff3ff; border-radius: 6px; white-space: nowrap; }
.note { padding: 20px 22px; background: #fff9e7; border: 1px solid #eed68f; }
.source-note { color: var(--muted); font-size: .94rem; }
.article-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.button { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; padding: 10px 18px; border: 1px solid var(--ink); background: var(--ink); color: #fff; font-weight: 800; text-decoration: none; }
.button.secondary { background: #fff; color: var(--ink); }
.footer { border-top: 1px solid var(--line); background: #fff; }
.footer-inner { width: min(var(--max), calc(100% - 32px)); min-height: 76px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 16px; color: var(--muted); }
@media (max-width: 680px) {
  .nav { min-height: 62px; }
  .nav-links > a:first-child { display: none; }
  .hero-inner { padding: 42px 0 44px; }
  h1 { font-size: 2.35rem; }
  .hero-copy { font-size: 1rem; }
  .outcome { grid-template-columns: 1fr; }
  .outcome div + div { border-left: 0; border-top: 1px solid var(--line); }
  main { margin-top: 34px; }
  .article-section { padding: 30px 0; }
  .comparison { display: block; overflow-x: auto; }
  .comparison th, .comparison td { min-width: 150px; }
  .footer-inner { padding: 18px 0; align-items: flex-start; flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }