:root{--bill-primary: #1d4ed8;--bill-primary-dark: #1e3a8a;--bill-accent: #f97316;--bill-bg: #f1f5f9;--bill-white: #ffffff;--bill-text: #0f172a;--bill-muted: #64748b;--bill-border: #e2e8f0;--bill-radius: 8px;--bill-font: "Segoe UI", system-ui, sans-serif;--bill-header-h: 64px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--bill-font);background:var(--bill-bg);color:var(--bill-text);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}a{color:var(--bill-primary);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto;display:block}.bill-topbar{background:var(--bill-white);border-bottom:1px solid var(--bill-border);font-size:.85rem}.bill-topbar-inner{max-width:1200px;margin:0 auto;padding:.5rem 1.5rem;display:flex;justify-content:flex-end;gap:1.25rem;align-items:center}.bill-topbar a{color:var(--bill-muted)}.bill-topbar a:hover{color:var(--bill-primary)}.bill-cart-count{background:var(--bill-accent);color:#fff;font-size:.7rem;padding:.1rem .4rem;border-radius:50px;margin-left:.25rem}.bill-header{background:var(--bill-white);border-bottom:1px solid var(--bill-border);position:sticky;top:0;z-index:100}.bill-header-inner{max-width:1200px;margin:0 auto;padding:0 1.5rem;height:var(--bill-header-h);display:flex;align-items:center;justify-content:space-between;gap:1rem}.bill-logo img{height:36px;width:auto}.bill-nav{display:flex;align-items:center;gap:.25rem;flex-wrap:wrap}.bill-nav>a,.bill-nav-dropdown>button{padding:.5rem .85rem;font-size:.9rem;font-weight:500;color:var(--bill-muted);border-radius:6px;transition:.2s;background:none;border:none;cursor:pointer;font-family:inherit;display:inline-flex;align-items:center;gap:.3rem}.bill-nav>a:hover,.bill-nav>a.active,.bill-nav-dropdown>button:hover{color:var(--bill-primary);background:#eff6ff}.bill-nav-dropdown{position:relative}.bill-nav-dropdown-panel{position:absolute;top:100%;left:0;min-width:200px;background:var(--bill-white);border:1px solid var(--bill-border);border-radius:var(--bill-radius);box-shadow:0 8px 24px #00000014;padding:.5rem;display:none;z-index:50}.bill-nav-dropdown.open .bill-nav-dropdown-panel{display:block}.bill-nav-dropdown-panel a{display:block;padding:.6rem .85rem;color:var(--bill-text);border-radius:4px;font-size:.88rem}.bill-nav-dropdown-panel a:hover{background:#eff6ff;text-decoration:none}.bill-main{flex:1}.bill-container{max-width:1200px;margin:0 auto;padding:2rem 1.5rem}.bill-hero{background:linear-gradient(135deg,#1e3a8a,#1d4ed8,#2563eb);color:#fff;padding:2.5rem 1.5rem;text-align:center}.bill-hero h1{font-size:clamp(1.5rem,3vw,2rem);margin-bottom:.5rem}.bill-hero p{opacity:.9;max-width:560px;margin:0 auto}.bill-card{background:var(--bill-white);border:1px solid var(--bill-border);border-radius:var(--bill-radius);padding:1.75rem;box-shadow:0 1px 3px #0000000a}.bill-card-title{font-size:1.1rem;font-weight:700;margin-bottom:1.25rem;padding-bottom:.75rem;border-bottom:1px solid var(--bill-border);color:var(--bill-primary-dark)}.bill-form{display:flex;flex-direction:column;gap:1rem}.bill-field label{display:block;font-size:.85rem;font-weight:600;margin-bottom:.35rem}.bill-field input,.bill-field select,.bill-field textarea{width:100%;padding:.75rem 1rem;border:1px solid var(--bill-border);border-radius:6px;font-size:.95rem;font-family:inherit}.bill-field input:focus,.bill-field select:focus,.bill-field textarea:focus{outline:none;border-color:var(--bill-primary);box-shadow:0 0 0 3px #1d4ed81f}.bill-checkbox{display:flex;align-items:center;gap:.5rem;font-size:.9rem}.bill-btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.5rem;border-radius:6px;font-weight:600;font-size:.95rem;border:none;cursor:pointer;font-family:inherit;transition:.2s}.bill-btn-primary{background:var(--bill-primary);color:#fff}.bill-btn-primary:hover{background:var(--bill-primary-dark)}.bill-btn-outline{background:#fff;border:1px solid var(--bill-border);color:var(--bill-text)}.bill-btn-outline:hover{border-color:var(--bill-primary);color:var(--bill-primary)}.bill-btn-block{width:100%}.bill-btn-accent{background:var(--bill-accent);color:#fff}.bill-btn-accent:hover{background:#ea580c}.bill-alert{padding:.85rem 1rem;border-radius:6px;font-size:.9rem;margin-bottom:1rem}.bill-alert-error{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca}.bill-alert-ok{background:#ecfdf5;color:#047857;border:1px solid #a7f3d0}.bill-auth-layout{display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:start;max-width:900px;margin:0 auto}.bill-auth-side{padding:2rem;background:linear-gradient(145deg,#eff6ff,#fff);border-radius:var(--bill-radius);border:1px solid var(--bill-border)}.bill-auth-side h2{font-size:1.35rem;color:var(--bill-primary-dark);margin-bottom:.75rem}.bill-auth-side p{color:var(--bill-muted);font-size:.95rem}.bill-auth-links{margin-top:1.25rem;font-size:.9rem;color:var(--bill-muted)}.bill-auth-links a{font-weight:600}.bill-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}.bill-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem}.bill-product-card{background:var(--bill-white);border:1px solid var(--bill-border);border-radius:var(--bill-radius);padding:1.5rem;text-align:center;transition:.2s}.bill-product-card:hover{border-color:var(--bill-primary);box-shadow:0 4px 16px #1d4ed81a}.bill-product-card h3{font-size:1.1rem;margin-bottom:.5rem;color:var(--bill-primary-dark)}.bill-product-card .price{font-size:1.75rem;font-weight:800;color:var(--bill-primary);margin:.75rem 0}.bill-product-card .price small{font-size:.85rem;font-weight:400;color:var(--bill-muted)}.bill-table{width:100%;border-collapse:collapse}.bill-table th,.bill-table td{padding:.85rem 1rem;text-align:left;border-bottom:1px solid var(--bill-border)}.bill-table th{font-size:.8rem;text-transform:uppercase;letter-spacing:.05em;color:var(--bill-muted);background:#f8fafc}.bill-table .total-row td{font-weight:700;font-size:1.05rem}.bill-footer{background:#0f172a;color:#94a3b8;margin-top:auto}.bill-footer-cta{background:linear-gradient(135deg,var(--bill-primary),#2563eb);padding:2.5rem 1.5rem;text-align:center;color:#fff}.bill-footer-cta h2{font-size:1.5rem;margin-bottom:.5rem}.bill-footer-cta p{opacity:.9;margin-bottom:1.25rem}.bill-footer-grid{max-width:1200px;margin:0 auto;padding:2.5rem 1.5rem;display:grid;grid-template-columns:1.2fr repeat(3,1fr);gap:2rem}.bill-footer-grid h5{color:#fff;font-size:.9rem;margin-bottom:1rem}.bill-footer-grid ul{list-style:none}.bill-footer-grid li{margin-bottom:.5rem}.bill-footer-grid a{color:#94a3b8;font-size:.88rem}.bill-footer-grid a:hover{color:#fff}.bill-footer-bottom{border-top:1px solid #1e293b;padding:1rem 1.5rem;text-align:center;font-size:.82rem}.bill-status-item{display:flex;align-items:center;justify-content:space-between;padding:1rem;border-bottom:1px solid var(--bill-border)}.bill-status-dot{width:10px;height:10px;border-radius:50%;background:#10b981;display:inline-block;margin-right:.5rem}.bill-menu-toggle{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer}@media(max-width:768px){.bill-auth-layout,.bill-grid-2,.bill-grid-3,.bill-footer-grid{grid-template-columns:1fr}.bill-nav{display:none;position:fixed;top:calc(var(--bill-header-h) + 36px);left:0;right:0;bottom:0;background:#fff;flex-direction:column;padding:1rem;overflow-y:auto}.bill-nav.open{display:flex}.bill-menu-toggle{display:block}.bill-nav-dropdown-panel{position:static;box-shadow:none;border:none;padding-left:1rem}}