:root{
  --bg:#f7f8fb;
  --panel:#ffffff;
  --ink:#142033;
  --muted:#607086;
  --line:#dbe3ee;
  --accent:#175c7a;
  --accent-2:#0e7b8f;
  --soft:#eaf5f8;
  --warn:#fff8e8;
  --wrap:1680px;
  --shadow:0 18px 50px rgba(19,38,65,.10);
  --radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;background:var(--bg);color:var(--ink);line-height:1.68;font-size:17px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{width:min(var(--wrap), calc(100% - 48px));margin-inline:auto}
.skip-link{position:absolute;left:-999px;top:auto;background:#fff;color:#000;padding:10px;z-index:99}.skip-link:focus{left:16px;top:16px}
.site-header{background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px 0}.brand,.footer-brand{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none}.brand small{display:block;color:var(--muted);font-size:.78rem;font-weight:500}.brand-mark{display:inline-grid;place-items:center;width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;font-weight:800;letter-spacing:.04em;box-shadow:0 10px 28px rgba(23,92,122,.22)}.brand-mark.small{width:34px;height:34px;border-radius:11px;font-size:.72rem}.site-nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:flex-end}.site-nav a{padding:9px 12px;border-radius:999px;color:var(--ink);font-size:.94rem}.site-nav a.active,.site-nav a:hover{background:var(--soft);text-decoration:none;color:var(--accent)}
.hero{padding:68px 0 36px;background:radial-gradient(circle at top left,#dff3f6,transparent 42%),linear-gradient(180deg,#fff,#f7f8fb)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(340px,.85fr);gap:28px;align-items:center}.eyebrow{margin:0 0 10px;color:var(--accent);font-weight:800;letter-spacing:.08em;text-transform:uppercase;font-size:.78rem}.hero h1,.page-hero h1,.article-card h1{font-size:clamp(2.15rem,4vw,4.7rem);line-height:1.02;margin:0 0 18px;letter-spacing:-.045em}.lead{font-size:clamp(1.08rem,1.3vw,1.35rem);color:#415168;max-width:1120px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.button{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:12px 18px;background:var(--accent);color:#fff;font-weight:800;text-decoration:none;box-shadow:0 14px 30px rgba(23,92,122,.22)}.button.secondary{background:#fff;color:var(--accent);border:1px solid var(--line)}.button:hover{text-decoration:none;transform:translateY(-1px)}
.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}.stat strong{display:block;font-size:1.8rem;line-height:1.1}.stat span{color:var(--muted);font-size:.95rem}.section{padding:42px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:22px}.section h2,.page-hero h1{margin-top:0}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.card,.content-card,.side-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.card{padding:22px;display:flex;flex-direction:column;min-height:100%}.card h3{margin:0 0 9px;font-size:1.18rem;line-height:1.25}.card p{margin:0 0 15px;color:var(--muted)}.card .meta{margin-top:auto;color:var(--muted);font-size:.88rem}.tag{display:inline-flex;align-self:flex-start;background:var(--soft);color:var(--accent);border-radius:999px;padding:4px 9px;font-size:.77rem;font-weight:800;margin-bottom:12px}.wide-panel{background:var(--panel);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);padding:30px}.columns{columns:2;column-gap:34px}.columns li{break-inside:avoid;margin-bottom:9px}.page-hero{padding:52px 0 18px}.simple-page{padding:30px 0 60px}.simple-page .content-card{padding:34px}.simple-page h2{margin-top:30px}.article-hero{padding:34px 0 66px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:24px;align-items:start}.article-card{padding:clamp(24px,4vw,54px)}.article-card h1{font-size:clamp(2rem,3.5vw,3.8rem)}.article-meta{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 28px}.article-meta span{background:var(--soft);border-radius:999px;padding:6px 10px;color:var(--accent);font-size:.86rem;font-weight:700}.article-section{padding-top:10px}.article-section h2{font-size:clamp(1.45rem,2vw,2rem);line-height:1.2;margin:28px 0 8px}.crumbs{font-size:.88rem;color:var(--muted);margin-top:0}.crumbs span{padding:0 5px}.side-card{position:sticky;top:94px;padding:22px}.side-card h2{font-size:1rem;margin:0 0 10px}.toc,.related-list{padding-left:18px;margin-top:0}.note-box,.source-box{background:var(--soft);border:1px solid #c8e7ee;border-radius:18px;padding:16px;margin-top:22px}.source-box{background:#fbfdff}.source-box h2{margin-top:0}.site-footer{background:#111d2b;color:#dce6f2;margin-top:40px;padding:42px 0 20px}.site-footer a{display:block;color:#e8f3ff;margin:.28rem 0}.site-footer p{color:#b6c4d6}.footer-grid{display:grid;grid-template-columns:1.3fr .5fr .5fr;gap:26px}.site-footer h2{font-size:1rem;margin-top:0;color:#fff}.copyright{border-top:1px solid rgba(255,255,255,.14);margin-top:28px;padding-top:18px;color:#b6c4d6;font-size:.92rem}.muted{color:var(--muted)}
.article-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.category-nav{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.category-nav a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 10px;color:var(--ink)}
@media (max-width:1100px){.hero-grid,.article-layout{grid-template-columns:1fr}.side-card{position:static}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.article-list{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:720px){.wrap{width:min(100% - 28px,var(--wrap))}.nav-wrap{align-items:flex-start;flex-direction:column}.site-nav{justify-content:flex-start}.hero{padding-top:42px}.grid,.article-list,.stat-grid,.footer-grid{grid-template-columns:1fr}.columns{columns:1}.wide-panel,.simple-page .content-card,.article-card{padding:22px}.brand small{display:none}}