:root{--navy:#10233f;--blue:#1f5f99;--cyan:#eaf5fb;--gold:#d89b2b;--text:#253247;--muted:#667085;--line:#dfe7ef;--bg:#f6f8fb;--white:#fff;--green:#176b54}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--text);background:var(--bg);line-height:1.75}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}.topbar{background:#0b1b30;color:#dce8f2;font-size:13px;padding:8px 0}.wrap{width:min(1180px,92%);margin:auto}.topbar .wrap,.header .wrap{display:flex;align-items:center;justify-content:space-between;gap:18px}.header{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.brand{display:flex;align-items:center;gap:12px;padding:16px 0}.brand-mark{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--navy),var(--blue));display:grid;place-items:center;color:white;font-weight:800}.brand b{font-size:19px;color:var(--navy)}.brand small{display:block;color:var(--muted)}nav a{margin-left:20px;font-weight:700;color:var(--navy)}.hero{background:linear-gradient(120deg,#0f2848,#1d6398);color:white;padding:76px 0 66px}.hero .eyebrow{font-size:13px;letter-spacing:.14em;text-transform:uppercase;font-weight:800;color:#bde2f7}.hero h1{font-size:clamp(36px,5vw,62px);line-height:1.08;margin:14px 0 18px;max-width:950px}.hero p{font-size:19px;max-width:860px;color:#e8f3fa}.hero-meta{display:flex;gap:18px;flex-wrap:wrap;margin-top:28px;font-size:14px}.layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:34px;margin:40px auto}.article,.sidebar-card{background:var(--white);border:1px solid var(--line);border-radius:18px;box-shadow:0 10px 30px rgba(16,35,63,.06)}.article{padding:42px}.article h2{font-size:31px;line-height:1.25;color:var(--navy);margin:44px 0 14px}.article h3{font-size:22px;color:#184d78;margin:28px 0 10px}.article p{margin:12px 0}.lead{font-size:20px;color:#344054}.toc{background:#f2f8fc;border-left:5px solid var(--blue);padding:22px 24px;border-radius:12px;margin:28px 0}.toc strong{color:var(--navy);font-size:18px}.toc ol{margin:10px 0 0;padding-left:20px}.note{background:#fff8e8;border:1px solid #f2d28e;border-radius:12px;padding:18px 20px;margin:24px 0}.expert{background:#edf7f3;border-left:5px solid var(--green);padding:20px;border-radius:12px;margin:24px 0}.specs{width:100%;border-collapse:collapse;margin:22px 0}.specs th,.specs td{border:1px solid var(--line);padding:13px;text-align:left}.specs th{background:#eef5fa;color:var(--navy)}.checklist{padding-left:22px}.checklist li{margin:8px 0}.sidebar{position:relative}.sidebar-card{padding:24px;margin-bottom:22px;position:sticky;top:95px}.sidebar-card h3{margin-top:0;color:var(--navy)}.sidebar-card a{display:block;padding:8px 0;border-bottom:1px dashed var(--line)}.cta{background:linear-gradient(135deg,#10233f,#1f5f99);color:white;border-radius:18px;padding:30px;margin-top:36px}.cta h2{color:white;margin-top:0}.cta a{display:inline-block;background:white;color:var(--navy);font-weight:800;padding:12px 18px;border-radius:10px;margin-top:8px}.related{border-top:1px solid var(--line);margin-top:34px;padding-top:22px}.faq details{border:1px solid var(--line);border-radius:10px;padding:14px 16px;margin:10px 0}.faq summary{font-weight:800;color:var(--navy);cursor:pointer}.footer{background:#0b1b30;color:#cbd7e3;padding:36px 0;margin-top:50px}.footer a{color:white}.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:20px}.article-header h1{font-size:42px;line-height:1.15;color:var(--navy);margin:8px 0 16px}.article-header .meta{font-size:14px;color:var(--muted)}@media(max-width:900px){.layout{grid-template-columns:1fr}.sidebar-card{position:static}.header .wrap{align-items:flex-start}.header nav{display:none}.article{padding:26px}.hero{padding:54px 0}.article-header h1{font-size:34px}}