:root{color-scheme:dark;--bg:#061522;--panel:#0e2b40;--line:#2a596d;--ink:#ecf7ff;--muted:#abc5d4;--cyan:#7ce7f6}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 Inter,Arial,sans-serif}a{color:var(--cyan)}a:focus-visible{outline:3px solid #fff;outline-offset:4px}.wrap{max-width:1150px;margin:auto;padding:0 24px}.skip{position:absolute;top:-200px}.skip:focus{top:6px}.nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.nav nav{display:flex;gap:20px;flex-wrap:wrap}.nav nav a{font-size:13px;font-weight:800;text-decoration:none}.logo{font-weight:900;color:#fff;text-decoration:none;letter-spacing:.14em}.logo span{color:#062231;background:var(--cyan);border-radius:5px;padding:5px 8px}header{border-bottom:1px solid var(--line)}.crumb{padding-top:16px;color:var(--muted);font-size:12px}.crumb a{color:var(--muted)}.hero{padding:54px 0 65px;background:linear-gradient(125deg,#10384e,#061522 75%);border-bottom:1px solid var(--line)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(260px,.7fr);gap:55px;align-items:center}.tag{font-size:11px;letter-spacing:.16em;color:var(--cyan);font-weight:900}.hero h1{font-size:clamp(2.5rem,5vw,4.1rem);line-height:1.08;letter-spacing:-.035em;margin:14px 0 20px}.lead{font-size:1.16rem;max-width:700px;color:#cbdfea}.actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0}.btn{display:inline-flex;justify-content:center;align-items:center;padding:13px 18px;border-radius:9px;text-align:center;text-decoration:none;font-weight:850;line-height:1.35}.primary{background:var(--cyan);color:#052432}.outline{border:1px solid #73a5b8;color:#f3fbff}.trust{color:#b6d2df;font-size:12px}.hero-card{padding:29px;background:#0d2b40;border:1px solid #35778e;border-radius:14px}.hero-card h2{font-size:25px;line-height:1.3}.hero-card p{color:#b8d7e5}.metric{border-top:1px solid var(--line);font-size:27px;font-weight:900;padding:10px 0}.metric span{font-size:13px;font-weight:600;color:var(--muted)}.layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:55px;padding-top:30px;padding-bottom:60px}.chapter{padding:33px 0;border-bottom:1px solid var(--line)}.chapter-no{font-family:monospace;color:var(--cyan);font-weight:900;font-size:12px}.chapter h2{font-size:clamp(1.55rem,2.5vw,2rem);line-height:1.2;margin:12px 0 20px}.chapter p{color:#c9dce8;max-width:770px}.offers{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:25px}.offers a,.related a{display:flex;flex-direction:column;gap:6px;background:var(--panel);border:1px solid var(--line);border-radius:11px;padding:18px;text-decoration:none;color:#fff}.offers a:hover,.related a:hover{border-color:var(--cyan)}.offers small{color:var(--cyan);font-size:10px;letter-spacing:.1em}.offers strong{font-size:24px}.offers span,.related span{font-size:12px;color:var(--muted)}.sidebar-inner{position:sticky;top:20px;background:#0d283b;padding:22px;border:1px solid var(--line);border-radius:12px}.sidebar-inner p{color:var(--muted)}.sidebar-inner .btn{width:100%}.fine{font-size:12px}.references{padding:26px 0;color:var(--muted);font-size:13px}.references h2{font-size:23px;color:#fff}.related{padding:50px 0;background:#0b2739}.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.foot{display:flex;gap:20px;flex-wrap:wrap;align-items:center;padding-top:24px;padding-bottom:24px;font-size:12px;color:var(--muted)}.foot a{color:var(--muted)}@media(max-width:850px){.hero-grid,.layout{grid-template-columns:1fr}.sidebar{display:none}.hero{padding:38px 0}.offers{grid-template-columns:1fr 1fr}}@media(max-width:590px){.wrap{padding-left:16px;padding-right:16px}.nav{flex-direction:column;align-items:flex-start;padding-top:14px;padding-bottom:14px}.nav nav{gap:12px}.nav nav a{font-size:12px}.hero h1{font-size:2.35rem}.lead{font-size:1rem}.actions{flex-direction:column}.actions .btn{width:100%}.offers,.related-grid{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}