:root{--brand:#2d78b7;--brand-deep:#244f79;--ink:#27384a;--muted:#5f6f7f;--line:#dce5ee;--soft:#f4f7fb;--white:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:#fff;line-height:1.68}
a{color:var(--brand);text-decoration:none}.wrap{width:min(1120px,calc(100% - 40px));margin:auto}
.site-head{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:12px 0}
.site-logo{width:285px;max-height:90px;object-fit:contain}.back{font-weight:700}
.article-hero{padding:66px 0 42px;background:linear-gradient(135deg,#f8fbfe,#e9f2fa)}.kicker{display:inline-block;font-size:12px;letter-spacing:.11em;font-weight:800;color:var(--brand-deep);background:#fff;border:1px solid var(--line);padding:7px 11px;border-radius:999px}
.article-hero h1{font-size:clamp(34px,5vw,58px);line-height:1.08;max-width:900px;margin:18px 0 14px}.subtitle{font-size:21px;line-height:1.45;color:var(--muted);max-width:920px}.status{margin-top:24px;font-size:13px;font-weight:700;color:#6e7e8e}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 260px;gap:54px;padding:54px 0 80px}.article-body p{font-size:17px;margin:0 0 19px}.article-body h2{font-size:29px;line-height:1.22;margin:44px 0 18px;color:var(--brand-deep)}
.article-body .lead{font-size:20px;font-weight:700;color:#34495d;margin-bottom:28px}.jfbox{background:var(--soft);border-left:5px solid var(--brand);padding:22px 24px;margin:34px 0;border-radius:0 14px 14px 0;font-weight:700}
.source{background:var(--soft);border-radius:14px;padding:16px 18px;margin:12px 0;font-size:15px}.source a{word-break:break-word}.note{background:#fff8e8;border:1px solid #efdca9;border-radius:14px;padding:16px 18px;margin-top:18px;font-size:14px}
.side{position:relative;top:auto;height:max-content;align-self:start}.sidebox{border:1px solid var(--line);border-radius:18px;padding:22px;background:#fff;box-shadow:0 10px 28px rgba(40,58,82,.06)}.sidebox h3{margin-top:0}
.btn{display:block;text-align:center;background:var(--brand);color:#fff;padding:12px 15px;border-radius:9px;font-weight:800;margin-top:12px}.btn.secondary{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.checklist{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0 30px}.checkitem{background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:14px;font-size:14px}.checkitem b{display:block;color:var(--brand-deep);margin-bottom:4px}
footer{background:#eef3f8;padding:28px 0;color:#68798a;font-size:13px}@media(max-width:860px){.site-head .wrap{align-items:flex-start}.site-logo{width:220px}.article-layout{grid-template-columns:1fr;gap:28px}.side{position:static}.checklist{grid-template-columns:1fr}}

.article-body h3{font-size:22px;line-height:1.28;margin:30px 0 12px;color:var(--brand-deep)}
.article-body .references{padding-left:22px;margin:12px 0 24px}
.article-body .references li{margin:10px 0;color:var(--muted)}
.article-body .references a{font-weight:700;word-break:break-word}

.article-body ul{padding-left:24px;margin:0 0 24px}.article-body li{margin:7px 0}.series-links{border-top:1px solid var(--line);margin-top:20px;padding-top:18px}.series-links h3{font-size:16px;color:var(--brand-deep);margin:0 0 10px}.series-links a{display:block;margin:8px 0;font-size:14px;font-weight:700}.compare-table-wrap{overflow-x:auto;margin:20px 0 30px}.compare-table{width:100%;border-collapse:collapse;font-size:14px}.compare-table th,.compare-table td{border:1px solid var(--line);padding:12px;text-align:left;vertical-align:top}.compare-table th{background:var(--soft);color:var(--brand-deep)}