:root{--bg:#f4f7fb;--surface:#fff;--ink:#122033;--muted:#64748b;--primary:#075985;--primary2:#0e7490;--border:#dbe4ee;--ok:#166534;--warn:#9a3412;--radius:18px;--shadow:0 14px 40px rgba(15,23,42,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Tahoma,"Segoe UI",Arial,sans-serif;line-height:1.75}a{color:var(--primary);text-decoration:none}.header{min-height:76px;background:rgba(255,255,255,.96);display:flex;align-items:center;gap:28px;padding:10px clamp(18px,5vw,76px);position:sticky;top:0;z-index:20;border-bottom:1px solid var(--border)}.brand img{width:160px;display:block}.header nav{display:flex;gap:22px;flex:1}.auth{display:flex;align-items:center;gap:12px}.auth form{margin:0}.link{border:0;background:none;color:var(--primary);font:inherit;cursor:pointer}.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:12px;padding:11px 20px;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;font:inherit;font-weight:700;cursor:pointer;box-shadow:0 7px 20px rgba(7,89,133,.18)}.btn.small{padding:7px 13px}.btn.ghost{background:#fff;color:var(--primary);border:1px solid var(--border);box-shadow:none}main{min-height:calc(100vh - 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