:root {
  --page-bg: #f4f5f8;
  --page-ink: #1d293c;
  --page-muted: #64748b;
  --page-soft: #eef2f7;
  --page-line: rgba(29, 41, 60, .12);
  --page-blue: #3975c6;
  --page-orange: #ef765f;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--page-ink);
  background: var(--page-bg);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
.content-shell { min-height: 100vh; display: flex; flex-direction: column; }
.content-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding: 22px 0;
}
.content-brand { display: inline-flex; align-items: center; gap: 9px; color: var(--page-ink); text-decoration: none; }
.content-brand img { width: 27px; height: 27px; }
.content-brand strong { font-size: 15px; letter-spacing: -.03em; }
.content-nav-links { display: flex; align-items: center; gap: 20px; color: var(--page-muted); font-size: 11px; }
.content-nav-links a { text-decoration: none; }
.content-nav-links a:hover, .content-nav-links a:focus-visible { color: var(--page-blue); }

.content-main { flex: 1; width: min(900px, calc(100% - 48px)); margin: 0 auto; padding: 68px 0 92px; }
.content-kicker { display: inline-block; color: var(--page-blue); font-size: 11px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.content-hero { max-width: 700px; margin-bottom: 38px; }
.content-hero h1 { margin: 12px 0 15px; font-size: clamp(35px, 6vw, 66px); line-height: 1.02; letter-spacing: -.065em; }
.content-hero p { max-width: 650px; margin: 0; color: var(--page-muted); font-size: 15px; line-height: 1.75; }
.content-layout { display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: 38px; align-items: start; }
.content-article { min-width: 0; }
.content-section { padding: 26px 0; border-top: 1px solid var(--page-line); }
.content-section:first-child { padding-top: 0; border-top: 0; }
.content-section h2 { margin: 0 0 12px; font-size: 22px; letter-spacing: -.04em; }
.content-section h3 { margin: 22px 0 7px; font-size: 14px; letter-spacing: -.02em; }
.content-section p, .content-section li { color: var(--page-muted); font-size: 13px; line-height: 1.8; }
.content-section p { margin: 0 0 13px; }
.content-section p:last-child { margin-bottom: 0; }
.content-section ul, .content-section ol { margin: 12px 0 0; padding-left: 21px; }
.content-section li + li { margin-top: 6px; }
.content-section strong { color: var(--page-ink); }
.fact-grid, .link-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 17px; }
.fact-card, .link-card { padding: 18px; border: 1px solid var(--page-line); border-radius: 16px; background: rgba(255,255,255,.66); }
.fact-card strong, .link-card strong { display: block; font-size: 13px; }
.fact-card p, .link-card p { margin: 7px 0 0; font-size: 11px; line-height: 1.65; }
.content-aside { position: sticky; top: 22px; padding: 18px; border: 1px solid var(--page-line); border-radius: 18px; background: rgba(255,255,255,.55); }
.content-aside strong { display: block; font-size: 12px; }
.content-aside nav { display: grid; gap: 10px; margin-top: 14px; }
.content-aside a { color: var(--page-muted); font-size: 11px; line-height: 1.4; text-decoration: none; }
.content-aside a:hover, .content-aside a:focus-visible { color: var(--page-blue); }
.callout { margin-top: 18px; padding: 18px 20px; border-left: 3px solid var(--page-orange); border-radius: 0 14px 14px 0; background: #fff8f4; }
.callout p { color: #76564e; }
.content-cta { display: inline-flex; align-items: center; gap: 8px; margin-top: 10px; padding: 11px 15px; color: white; border-radius: 999px; background: var(--page-ink); font-size: 11px; font-weight: 650; text-decoration: none; }
.content-cta:hover, .content-cta:focus-visible { background: var(--page-blue); }
.content-footer { width: min(1120px, calc(100% - 48px)); margin: 0 auto; padding: 25px 0 28px; border-top: 1px solid var(--page-line); }
.content-footer-top { display: grid; grid-template-columns: minmax(180px,1fr) auto; grid-template-rows: auto auto; align-items: start; gap: 14px 36px; }
.content-footer-brand { grid-column: 1; grid-row: 1 / span 2; max-width: 280px; }
.content-footer-brand strong { display: block; font-size: 13px; }
.content-footer-brand p { max-width: none; margin: 7px 0 0; color: var(--page-muted); font-size: 10px; line-height: 1.6; white-space: nowrap; }
.content-footer-links { grid-column: 2; grid-row: 1; display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 16px; padding-top: 1px; color: var(--page-muted); font-size: 10px; }
.content-footer-links a { text-decoration: none; }
.content-footer-links a:hover, .content-footer-links a:focus-visible { color: var(--page-blue); }
.content-footer-badge { grid-column: 2; grid-row: 2; display: block; justify-self: end; line-height: 0; }
.content-footer-badge img { display: block; width: 250px; max-width: calc(100vw - 48px); height: auto; }
.content-footer-badge:focus-visible { outline: 3px solid rgba(0,113,227,.45); outline-offset: 4px; border-radius: 4px; }
.content-footer-bottom { display: flex; align-items: center; justify-content: center; gap: 20px; margin-top: 22px; color: #8b98aa; font-size: 10px; text-align: center; }
.content-footer-bottom a { text-decoration: none; }
.content-footer-bottom a:hover, .content-footer-bottom a:focus-visible { color: var(--page-blue); }

@media (max-width: 720px) {
  .content-nav, .content-main, .content-footer { width: min(100% - 32px, 620px); }
  .content-nav { align-items: flex-start; padding: 17px 0; }
  .content-nav-links { gap: 10px; font-size: 10px; }
  .content-nav-links a:nth-child(n+3) { display: none; }
  .content-main { padding: 46px 0 64px; }
  .content-layout { grid-template-columns: 1fr; gap: 28px; }
  .content-aside { position: static; order: -1; }
  .content-aside nav { display: flex; flex-wrap: wrap; gap: 8px 14px; }
  .content-footer-top, .content-footer-bottom { display: grid; gap: 15px; }
  .content-footer-links { justify-content: flex-start; }
  .content-footer-badge { justify-self: start; }
  .fact-grid, .link-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .content-footer-top { grid-template-columns: 1fr; grid-template-rows: none; }
  .content-footer-brand, .content-footer-links, .content-footer-badge { grid-column: 1; grid-row: auto; }
}