*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.7;color:#18212f;background:#f7f8fb}a{color:inherit}.container{width:min(1120px,92%);margin:auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid #e7eaf0}.header-inner{min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{text-decoration:none;font-size:1.35rem;font-weight:850;letter-spacing:-.03em}.brand span{color:#111827}.brand small{color:#64748b}.nav{display:flex;align-items:center;gap:5px;flex-wrap:wrap}.nav a{padding:8px 10px;text-decoration:none;color:#4b5563;font-size:.92rem;border-radius:9px}.nav a:hover{background:#f1f5f9;color:#111827}.menu-toggle{display:none;border:0;background:#111827;color:white;border-radius:9px;padding:9px 12px;font-size:1.1rem}.hero{padding:72px 0 54px;background:linear-gradient(135deg,#eef2ff 0%,#fff 55%,#f0fdf4 100%);border-bottom:1px solid #e8ebf0}.eyebrow{font-size:.75rem;font-weight:800;letter-spacing:.12em;color:#64748b;margin:0 0 12px}.hero h1{font-size:clamp(2rem,5vw,3.6rem);line-height:1.08;letter-spacing:-.045em;max-width:850px;margin:0 0 18px}.lead{font-size:1.1rem;color:#526071;max-width:780px;margin:0}.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:36px;padding:48px 0}.article{min-width:0}.content-section{background:white;border:1px solid #e7eaf0;border-radius:16px;padding:27px 29px;margin-bottom:20px;box-shadow:0 4px 20px rgba(15,23,42,.035)}.content-section h2{font-size:1.45rem;line-height:1.25;margin:0 0 10px;letter-spacing:-.02em}.content-section p{margin:0;color:#4b5563}.sidebar{position:relative}.card{background:white;border:1px solid #e7eaf0;border-radius:16px;padding:21px;margin-bottom:18px;position:sticky;top:92px}.card h3{margin:0 0 10px;font-size:1rem}.card a{display:block;text-decoration:none;color:#475569;padding:6px 0}.card a:hover{color:#111827}.card.note{position:static;background:#f8fafc}.card.note p{font-size:.9rem;color:#64748b;margin:0}footer{background:#111827;color:#d1d5db;margin-top:20px;padding:42px 0 18px}.footer-grid{display:grid;grid-template-columns:2fr 1fr;gap:40px}.footer-grid strong{color:white}.footer-grid p{color:#9ca3af;max-width:500px}.footer-grid a{display:block;text-decoration:none;color:#cbd5e1;padding:3px 0}.footer-grid a:hover{color:white}.copyright{border-top:1px solid #263142;margin-top:30px;padding-top:16px;color:#94a3b8;font-size:.85rem}@media(max-width:850px){.menu-toggle{display:block}.nav{display:none;position:absolute;left:4%;right:4%;top:65px;background:white;border:1px solid #e5e7eb;border-radius:14px;padding:10px;box-shadow:0 15px 35px rgba(0,0,0,.1)}.nav.open{display:block}.nav a{display:block}.layout{grid-template-columns:1fr}.sidebar{order:2}.card{position:static}.hero{padding:52px 0 42px}}@media(max-width:560px){.container{width:min(94%,1120px)}.hero h1{font-size:2.15rem}.lead{font-size:1rem}.content-section{padding:21px 20px}.content-section h2{font-size:1.25rem}.footer-grid{grid-template-columns:1fr}.header-inner{min-height:62px}}
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