:root {
  color-scheme: light;
  --brand-600:#6240F0; --brand-700:#5030D8; --brand-500:#7557F4;
  --neutral-0:#FFFFFF; --neutral-25:#FCFCFD; --neutral-50:#F8F8FA;
  --neutral-600:#5C5C68; --neutral-900:#111116;
  --color-bg-canvas:var(--neutral-25);
  --color-bg-surface:var(--neutral-0);
  --color-bg-subtle:var(--neutral-50);
  --color-text-primary:var(--neutral-900);
  --color-text-secondary:var(--neutral-600);
  --color-border-default:#E2E2E8;
  --color-action-primary:var(--brand-600);
  --color-action-primary-hover:var(--brand-700);
  --color-focus:var(--brand-500);
  --paper:var(--color-bg-canvas);
  --surface:var(--color-bg-surface);
  --ink:var(--color-text-primary);
  --muted:var(--color-text-secondary);
  --primary:var(--color-action-primary);
  --primary-hover:var(--color-action-primary-hover);
  --line:var(--color-border-default);
  --soft:var(--color-bg-subtle);
  --ring:var(--color-focus);
}
* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { margin:0; background:var(--color-bg-canvas); color:var(--color-text-primary); font:16px/1.6 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif; }
a { color:inherit; }
a:focus-visible,input:focus-visible { outline:3px solid var(--color-focus); outline-offset:3px; }
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }
.skip-link { position:absolute; left:16px; top:-80px; z-index:100; padding:10px 14px; border-radius:10px; background:var(--ink); color:#fff; }
.skip-link:focus { top:12px; }
.article-header { width:calc(100% - 96px); height:120px; margin:auto; display:flex; align-items:flex-end; gap:32px; padding:32px 0; }
.article-brand { flex:none; display:flex; align-items:center; gap:12px; text-decoration:none; }
.article-brand > img { width:56px; height:56px; }
.article-brand-copy { display:grid; gap:2px; color:#5c669d; }
.article-brand-copy img { width:148px; height:34px; }
.article-brand-copy small { font-size:14px; line-height:16px; letter-spacing:.08px; white-space:nowrap; }
.article-header nav { margin-left:auto; display:flex; align-items:center; gap:48px; overflow:auto; }
.article-header nav a { flex:none; padding:13px 0 10px; border-bottom:3px solid transparent; font-size:20px; line-height:24px; text-decoration:none; white-space:nowrap; }
.article-header nav a[aria-current="page"] { border-color:#5457fa; color:var(--primary); }
.article-city { flex:none; display:flex; align-items:center; gap:16px; min-height:56px; padding:15px 20px; border:1px solid rgba(84,87,250,.1); border-radius:48px; background:#fff; color:#5c669d; }
.article-city img { width:24px; height:24px; }
.article-shell { width:min(1180px,calc(100% - 48px)); margin:0 auto; padding:36px 0 80px; }
.breadcrumbs { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:30px; color:var(--muted); font-size:14px; }
.breadcrumbs > * + *::before { content:"/"; margin-right:8px; color:#a5aabd; }
.breadcrumbs a { text-decoration:none; }
.eyebrow { margin:0 0 10px; color:var(--primary); font-size:13px; font-weight:750; letter-spacing:.08em; text-transform:uppercase; }
h1 { max-width:960px; margin:0; font-size:clamp(40px,6vw,72px); line-height:1.03; letter-spacing:-2.6px; }
h2 { margin:0; font-size:30px; line-height:1.2; letter-spacing:-.6px; }
h3 { margin:0; font-size:20px; line-height:1.3; }
p { margin:0; }
.lede { max-width:820px; margin-top:24px; color:#4f586f; font-size:20px; }
.article-actions { display:flex; flex-wrap:wrap; gap:12px; margin-top:28px; }
.button-link { display:inline-flex; align-items:center; min-height:48px; padding:11px 18px; border:1px solid var(--primary); border-radius:12px; color:var(--primary); font-weight:700; text-decoration:none; }
.button-link.primary { background:var(--primary); color:#fff; }
.topic-nav { display:flex; gap:9px; margin:40px 0 0; padding:0 0 8px; overflow-x:auto; list-style:none; scrollbar-width:thin; }
.topic-nav a { display:block; padding:9px 13px; border:1px solid var(--line); border-radius:999px; background:#fff; color:#383f5b; font-size:14px; text-decoration:none; white-space:nowrap; }
.topic-nav a[aria-current="page"] { border-color:var(--primary); background:#ededff; color:var(--primary); font-weight:700; }
.article-layout { display:grid; grid-template-columns:minmax(0,1fr) 280px; gap:64px; margin-top:54px; align-items:start; }
.article-content { min-width:0; }
.article-content > section { margin-top:54px; }
.article-content > section:first-child { margin-top:0; }
.article-content section > p { margin-top:16px; color:#424b64; }
.article-aside { position:sticky; top:24px; display:grid; gap:24px; }
.toc,.boundary { padding:22px; border:1px solid var(--line); border-radius:16px; background:#fff; }
.toc strong,.boundary strong { display:block; margin-bottom:10px; }
.toc a { display:block; padding:6px 0; color:var(--primary); text-decoration:none; }
.boundary p { color:#535c73; font-size:14px; }
.checklist { display:grid; gap:10px; margin:20px 0 0; padding:0; list-style:none; }
.checklist li { position:relative; padding-left:28px; color:#424b64; }
.checklist li::before { content:""; position:absolute; left:0; top:.35em; width:16px; height:16px; border:2px solid #7077b9; border-radius:4px; }
.situation-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px; margin-top:22px; }
.situation-link { display:flex; flex-direction:column; gap:8px; min-height:126px; padding:18px; border:1px solid var(--line); border-radius:15px; background:#fff; text-decoration:none; }
.situation-link:hover { border-color:#b9bddd; box-shadow:0 8px 22px rgba(18,25,121,.06); }
.situation-link small { color:#68718d; }
.situation-link strong { font-size:17px; line-height:1.35; }
.situation-link span { margin-top:auto; color:var(--primary); font-size:14px; font-weight:700; }
.adjacent-grid,.article-index-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; margin-top:22px; }
.adjacent-card,.article-index-card { display:grid; gap:10px; padding:22px; border:1px solid var(--line); border-radius:16px; background:#fff; text-decoration:none; }
.adjacent-card span,.article-index-card p { color:var(--muted); }
.faq-list { display:grid; gap:12px; margin-top:22px; }
.faq-list details { padding:18px 20px; border:1px solid var(--line); border-radius:14px; background:#fff; }
.faq-list summary { font-weight:700; cursor:pointer; }
.faq-list p { margin-top:12px; color:#4f586f; }
.article-pager { display:flex; justify-content:space-between; gap:20px; margin-top:58px; padding-top:24px; border-top:1px solid var(--line); }
.article-pager a { color:var(--primary); font-weight:700; text-decoration:none; }
.article-search { display:grid; grid-template-columns:28px minmax(0,1fr); gap:12px; align-items:center; max-width:760px; margin-top:30px; padding:13px 18px; border:1px solid #d2d5e2; border-radius:16px; background:#fff; }
.article-search img { width:24px; height:24px; }
.article-search input { min-width:0; min-height:42px; padding:0; border:0; outline:0; background:transparent; color:var(--ink); font:500 17px/1.3 inherit; }
.search-status { margin-top:12px; color:var(--muted); font-size:14px; }
.article-index-grid { grid-template-columns:repeat(3,minmax(0,1fr)); margin-top:34px; }
.article-index-card { min-height:220px; }
.article-index-card small { color:var(--primary); font-weight:700; }
.article-index-card strong { font-size:20px; line-height:1.3; }
.article-index-card span { margin-top:auto; color:var(--primary); font-weight:700; }
.article-index-card[hidden] { display:none; }
.article-footer { width:min(1180px,calc(100% - 48px)); margin:auto; padding:30px 0 40px; border-top:1px solid var(--line); color:var(--muted); font-size:14px; }
.article-footer nav { display:flex; flex-wrap:wrap; gap:14px 20px; margin-top:12px; }
.article-footer a { text-decoration:none; }
@media (max-width:1180px) {
  .article-header { width:calc(100% - 48px); height:auto; flex-wrap:wrap; align-items:center; padding:22px 0 12px; }
  .article-header nav { order:3; width:100%; margin:0; padding-bottom:5px; }
  .article-city { margin-left:auto; }
  .article-layout { grid-template-columns:1fr; gap:36px; }
  .article-aside { position:static; grid-template-columns:repeat(2,minmax(0,1fr)); }
  .article-index-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (max-width:700px) {
  .article-header,.article-shell,.article-footer { width:calc(100% - 32px); }
  .article-header { gap:12px; }
  .article-brand { gap:8px; }
  .article-brand > img { width:44px; height:44px; }
  .article-brand-copy img { width:105px; height:auto; }
  .article-brand-copy small { max-width:105px; font-size:9px; line-height:11px; white-space:normal; }
  .article-city { max-width:150px; gap:7px; min-height:44px; padding:9px 12px; font-size:13px; overflow:hidden; }
  .article-city span { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
  .article-city img { width:20px; height:20px; }
  .article-header nav { gap:24px; }
  .article-header nav a { font-size:15px; }
  .article-shell { padding-top:24px; }
  h1 { font-size:40px; letter-spacing:-1.6px; }
  .lede { font-size:18px; }
  .article-layout { margin-top:40px; }
  .article-aside,.situation-grid,.adjacent-grid,.article-index-grid { grid-template-columns:1fr; }
  .article-pager { align-items:flex-start; flex-direction:column; }
}