:root{--bg:#f7fbfc;--ink:#12242f;--muted:#526876;--primary:#075985;--accent:#0f766e;--line:#cfe1e8;--surface:#fff;--radius:8px;--shadow:0 18px 48px rgba(7,89,133,.12)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,Segoe UI,Arial,sans-serif;font-size:16px;line-height:1.6}a{color:var(--primary);text-underline-offset:.18em}:focus-visible{outline:3px solid rgba(15,118,110,.45);outline-offset:3px}.site-header{position:sticky;top:0;z-index:20;background:rgba(247,251,252,.93);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.nav-shell{width:min(1160px,calc(100% - 32px));min-height:68px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;text-decoration:none}.brand-mark{width:38px;height:38px;display:grid;place-items:center;color:#fff;background:var(--primary);border-radius:var(--radius);font-size:13px}.nav-links,.site-footer nav{display:flex;flex-wrap:wrap;gap:16px;font-weight:800}.nav-links a{text-decoration:none}.hero,.tool-grid,.article-layout,.site-footer,.ad-slot{width:min(1160px,calc(100% - 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32px));margin:auto;padding:clamp(48px,8vw,92px) 0}.simple-page h1,.article-page h1{max-width:13ch;margin-bottom:18px}.article-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:28px}.article-card{display:block;min-height:180px;padding:20px;text-decoration:none;color:var(--ink)}.article-card span{color:var(--primary);font-size:.75rem;font-weight:900;text-transform:uppercase;letter-spacing:.06em}.article-card h2{margin:8px 0;font-size:1.2rem}.source-box{display:grid;gap:8px;margin-top:36px;padding:20px}.button{min-height:48px;display:inline-flex;align-items:center;justify-content:center;width:100%;max-width:320px;margin-top:12px;color:#fff;background:var(--accent);border-radius:var(--radius);font-weight:900;text-decoration:none}@media(max-width:900px){.hero,.tool-grid,.article-layout{grid-template-columns:1fr}.car-visual{min-height:320px}.result-panel{order:2}.article-card-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:680px){.nav-shell{align-items:flex-start;flex-direction:column;padding:12px 0}.nav-links{width:100%;overflow-x:auto}.calculator,.article-card-grid{grid-template-columns:1fr}h1{max-width:11ch}}