:root{
  --primary:#4f46e5;
  --primary-dark:#4338ca;
  --primary-light:#eef2ff;
  --success:#16a34a;
  --danger:#dc2626;
  --warning:#d97706;
  --text:#1f2937;
  --muted:#6b7280;
  --border:#e5e7eb;
  --bg:#f7f8fa;
  --card:#ffffff;
  --radius:12px;
  --shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.04);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);line-height:1.6}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1140px;margin:0 auto;padding:0 20px}
.text-muted{color:var(--muted)}
.text-success{color:var(--success)}
.text-danger{color:var(--danger)}
.text-warning{color:var(--warning)}

/* Navbar */
.navbar{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}
.navbar .inner{max-width:1140px;margin:0 auto;padding:0 20px;height:60px;display:flex;align-items:center;justify-content:space-between}
.brand{font-weight:700;font-size:20px;color:var(--primary);display:flex;align-items:center;gap:8px}
.brand .dot{width:10px;height:10px;border-radius:50%;background:var(--primary)}
.nav-links{display:flex;gap:22px;align-items:center}
.nav-links a{color:var(--text);font-size:14px}
.nav-links a:hover{color:var(--primary);text-decoration:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:.15s}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);text-decoration:none}
.btn-outline{background:#fff;border-color:var(--border);color:var(--text)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);text-decoration:none}
.btn-danger{background:var(--danger);color:#fff}
.btn-sm{padding:5px 12px;font-size:13px}
.btn-block{width:100%}

/* Hero */
.hero{background:linear-gradient(135deg,#4f46e5,#7c3aed);color:#fff;padding:80px 0 90px}
.hero h1{font-size:42px;line-height:1.2;margin:0 0 18px;font-weight:800}
.hero p{font-size:18px;opacity:.92;max-width:620px;margin:0 0 28px}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap}

/* Sections */
.section{padding:64px 0}
.section h2{font-size:28px;text-align:center;margin:0 0 12px}
.section .sub{text-align:center;color:var(--muted);margin:0 0 40px}
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:860px){.grid-3,.grid-4,.grid-2{grid-template-columns:1fr}}

.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.card h3{margin:0 0 10px;font-size:18px}
.feature .ico{width:46px;height:46px;border-radius:10px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;margin-bottom:14px}

/* Steps */
.steps{counter-reset:step}
.step{display:flex;gap:16px;margin-bottom:18px}
.step .num{counter-increment:step;flex:0 0 36px;width:36px;height:36px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.step .num::before{content:counter(step)}

/* Tables */
.table-wrap{overflow-x:auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--border)}
th{background:#f9fafb;font-weight:600;color:var(--muted);white-space:nowrap}
tr:last-child td{border-bottom:none}
tbody tr:hover{background:#fafbff}

/* Forms */
.form-card{max-width:520px;margin:40px auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.form-row{margin-bottom:16px}
label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}
input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit;background:#fff}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.help{font-size:12px;color:var(--muted);margin-top:4px}
.page{padding:40px 0}
.page-title{font-size:24px;margin:0 0 4px}
.page-sub{color:var(--muted);margin:0 0 24px}

/* Badges */
.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:600}
.badge-success{background:#dcfce7;color:#166534}
.badge-danger{background:#fee2e2;color:#991b1b}
.badge-warning{background:#fef3c7;color:#92400e}
.badge-info{background:var(--primary-light);color:var(--primary-dark)}
.badge-muted{background:#f3f4f6;color:#4b5563}

/* Alerts */
.alert{padding:12px 16px;border-radius:8px;margin-bottom:18px;font-size:14px}
.alert-success{background:#dcfce7;color:#166534;border:1px solid #bbf7d0}
.alert-error{background:#fee2e2;color:#991b1b;border:1px solid #fecaca}
.alert-info{background:#dbeafe;color:#1e40af;border:1px solid #bfdbfe}

/* Stats */
.stat{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.stat .label{font-size:13px;color:var(--muted)}
.stat .value{font-size:26px;font-weight:700;margin-top:6px}

/* Sidebar layout for dashboards */
.wrap{display:flex;gap:24px;align-items:flex-start}
.sidebar{flex:0 0 210px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:14px;position:sticky;top:80px}
.sidebar a{display:block;padding:9px 12px;border-radius:8px;color:var(--text);font-size:14px;margin-bottom:4px}
.sidebar a:hover{background:var(--primary-light);text-decoration:none}
.sidebar a.active{background:var(--primary);color:#fff}
.content{flex:1;min-width:0}
@media(max-width:860px){.wrap{flex-direction:column}.sidebar{position:static;width:100%}}

/* Code */
pre{background:#0f172a;color:#e2e8f0;padding:16px;border-radius:8px;overflow:auto;font-size:13px;line-height:1.5}
code{font-family:"SF Mono",Consolas,Monaco,monospace}
.inline-code{background:#f1f5f9;padding:1px 6px;border-radius:4px;font-size:13px}

/* Footer */
.footer{background:#0f172a;color:#cbd5e1;padding:40px 0;margin-top:40px;font-size:14px}
.footer a{color:#cbd5e1}
.footer .cols{display:flex;gap:40px;flex-wrap:wrap}
.footer h4{color:#fff;font-size:15px;margin:0 0 12px}

.qr-box{text-align:center}
.qr-box img{max-width:260px;width:100%;border:1px solid var(--border);border-radius:8px;padding:8px;background:#fff}

.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px;align-items:center}
.toolbar .grow{flex:1}
.flash{margin-bottom:16px}
.mt-20{margin-top:20px}
.text-right{text-align:right}
.flex{display:flex;gap:10px;align-items:center}