:root{
  --accent:#4F46E5; --accent-dark:#4338CA; --bg:#F8FAFC; --card:#fff;
  --text:#111827; --muted:#6B7280; --border:#E5E7EB; --ok:#059669;
  --warn:#B45309; --bad:#DC2626; --radius:12px;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Inter,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}
.skip{position:absolute;left:-9999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:99}
.topbar{display:flex;align-items:center;gap:12px;padding:10px 18px;background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}
.brand{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--text);font-weight:800;font-size:1.25rem}
.brand-mark{display:inline-flex;width:32px;height:32px;border-radius:9px;background:var(--accent);color:#fff;align-items:center;justify-content:center;font-weight:900}
.topnav{margin-left:auto;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.topnav a{text-decoration:none;color:var(--text);font-weight:500}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--border);border-radius:8px;padding:6px 10px;font-size:1.1rem}
.container{max-width:1080px;margin:0 auto;padding:20px 16px 60px}
.footer{text-align:center;color:var(--muted);padding:24px;font-size:.9rem}
h1{font-size:1.6rem;margin:.4em 0}h2{font-size:1.15rem}h3{font-size:1rem}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;margin-bottom:16px;box-shadow:0 1px 2px rgba(16,24,40,.04)}
.page-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.btn{display:inline-block;border:1px solid var(--border);background:#fff;color:var(--text);border-radius:9px;padding:9px 14px;text-decoration:none;cursor:pointer;font-weight:600;font-size:.92rem}
.btn:hover{border-color:var(--accent)}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark)}
.btn-ghost{background:transparent}
.btn-danger{border-color:#FECACA;color:var(--bad)}
.btn-accent{background:#059669;border-color:#059669;color:#fff}
.btn-lg{padding:12px 20px;font-size:1rem}
.btn-sm{padding:4px 8px;font-size:.8rem}
.btn-block{width:100%;margin-top:8px}
.inline{display:inline}
.grid{display:grid;gap:14px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}
.stats{grid-template-columns:repeat(6,1fr)}
.stat{text-align:center}.stat-label{display:block;color:var(--muted);font-size:.82rem}.stat strong{font-size:1.4rem}
.ok{color:var(--ok)}.warn{color:var(--warn)}.bad{color:var(--bad)}
.table{width:100%;border-collapse:collapse;font-size:.93rem}
.table th{text-align:left;color:var(--muted);font-weight:600;padding:8px;border-bottom:1px solid var(--border)}
.table td{padding:9px 8px;border-bottom:1px solid var(--border);vertical-align:top}
.table .r{text-align:right}.table-wrap{overflow-x:auto;padding:0}.table-wrap .table{min-width:640px}.table-wrap .empty{padding:24px}
.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:.78rem;font-weight:700;background:#EEF2FF;color:var(--accent)}
.badge-paid,.badge-accepted{background:#D1FAE5;color:#065F46}
.badge-sent{background:#DBEAFE;color:#1E40AF}
.badge-overdue{background:#FEE2E2;color:#991B1B}
.badge-partially-paid{background:#FEF3C7;color:#92400E}
.badge-cancelled,.badge-rejected,.badge-expired{background:#F3F4F6;color:#4B5563}
.badge-draft{background:#F3F4F6;color:#4B5563}
label{display:block;margin:10px 0;font-weight:600}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=date],input[type=tel],input[type=search],select,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:9px;font-size:.95rem;background:#fff;color:var(--text);font-weight:400}
input:focus,select:focus,textarea:focus,button:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
.form-card{max-width:860px}.form-row{display:flex;gap:10px;align-items:center;margin-top:14px;flex-wrap:wrap}
.searchbar{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap}.searchbar input{flex:1;min-width:200px}.searchbar select{max-width:200px}
.flash-wrap{max-width:1080px;margin:0 auto;padding:10px 16px 0}
.flash{border-radius:9px;padding:10px 14px;margin-bottom:8px}
.flash-success{background:#D1FAE5;color:#065F46}.flash-error{background:#FEE2E2;color:#991B1B}
.empty{text-align:center;padding:28px;color:var(--muted)}
.auth-wrap{display:flex;justify-content:center}.auth-card{max-width:420px;width:100%}
.muted{color:var(--muted)}.small{font-size:.82rem}
.dl{display:grid;grid-template-columns:140px 1fr;gap:6px 12px}.dl dt{color:var(--muted)}.dl dd{margin:0;overflow-wrap:anywhere}
.linklist{list-style:none;padding:0;margin:0}.linklist li{padding:6px 0;border-bottom:1px dashed var(--border)}
.totals{display:flex;gap:18px;flex-wrap:wrap;margin:14px 0;background:#F9FAFB}.totals .grand{font-size:1.1rem;color:var(--accent)}
.payform label{margin:6px 0}
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:center;padding:24px 0}
.hero h1{font-size:2.4rem;line-height:1.15;margin:0}.tagline{color:var(--accent)}
.lede{font-size:1.1rem;color:#374151}
.cta-row{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}
.demo-link{font-size:.9rem}
.hero-card{display:grid;gap:12px}
.preview-doc{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:14px}
.preview-head{display:flex;justify-content:space-between;font-weight:700;margin-bottom:8px}
.preview-row{display:flex;justify-content:space-between}
.preview-bar{background:#EEF2FF;border-radius:99px;height:8px;margin:10px 0}.preview-bar i{display:block;height:8px;border-radius:99px;background:var(--accent)}
.preview-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:.85rem}
.benefits,.how{padding:20px 0}
.steps{list-style:none;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.steps li{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:14px;display:grid;gap:4px}
.steps span{color:var(--muted);font-size:.9rem}
@media(max-width:900px){.stats{grid-template-columns:repeat(3,1fr)}.grid-3{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:repeat(2,1fr)}.hero{grid-template-columns:1fr}}
@media(max-width:640px){
  .grid-2,.grid-3{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .nav-toggle{display:block}
  .topnav{display:none;width:100%;flex-direction:column;align-items:stretch;padding:10px 0}
  .topnav.open{display:flex}
  .page-head{flex-direction:column;align-items:stretch}
  .dl{grid-template-columns:110px 1fr}
  h1{font-size:1.35rem}.hero h1{font-size:1.9rem}
}
@media print{.topbar,.footer,.actions,.searchbar,.flash-wrap{display:none!important}.container{max-width:none}}