:root{
  --primary:#1565C0;
  --primary-strong:#0B74DE;
  --primary-dark:#123A63;
  --primary-container:#D6E9FF;
  --on-primary:#FFFFFF;
  --secondary:#52606D;
  --success:#2E7D32;
  --success-soft:#E8F5E9;
  --danger:#D32F2F;
  --danger-soft:#FFF0F0;
  --warning:#F9A825;
  --background:#F8FBFF;
  --surface:#FFFFFF;
  --surface-variant:#EEF4FB;
  --text:#17212B;
  --muted:#52606D;
  --line:#DCE6F0;
  --shadow:0 16px 44px rgba(21,101,192,.10);
  --radius-xl:28px;
  --radius-lg:20px;
  --radius-md:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Arial,Tahoma,sans-serif;
  background:var(--background);
  color:var(--text);
  line-height:1.75
}
a{color:var(--primary);text-decoration:none}
img{max-width:100%}
.container{width:min(1140px,92%);margin:auto}
header{
  position:sticky;top:0;z-index:30;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line)
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:13px 0}
.brand{display:flex;align-items:center;gap:12px;font-weight:900;color:var(--primary-dark)}
.brand img{width:52px;height:52px;border-radius:16px;object-fit:cover;box-shadow:0 8px 24px rgba(21,101,192,.16)}
nav{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
nav a{color:var(--text);font-weight:700}
.hero{
  padding:78px 0;
  background:
    radial-gradient(circle at 80% 20%,rgba(54,214,122,.13),transparent 28%),
    linear-gradient(180deg,#FFFFFF 0%,#F4F9FF 100%)
}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.badge{display:inline-flex;align-items:center;gap:8px;background:var(--success-soft);color:var(--success);padding:7px 13px;border-radius:999px;font-weight:800}
h1{font-size:clamp(38px,6vw,68px);line-height:1.08;margin:18px 0;color:var(--primary-dark)}
h2{font-size:clamp(28px,4vw,43px);line-height:1.25;margin:0 0 18px;color:var(--primary-dark)}
h3{color:var(--primary-dark)}
.lead{font-size:20px;color:var(--muted)}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 20px;border-radius:var(--radius-md);font-weight:800;border:0;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:#fff;box-shadow:0 10px 26px rgba(21,101,192,.22)}
.btn-light{background:#fff;border:1px solid var(--line);color:var(--text)}
.btn-danger{background:var(--danger);color:#fff}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.section{padding:70px 0}
.icon-tile{width:54px;height:54px;border-radius:17px;display:grid;place-items:center;background:var(--primary-container);color:var(--primary);font-size:28px}
.app-showcase{position:relative;padding:28px;border-radius:32px;background:#fff;box-shadow:0 22px 70px rgba(18,58,99,.16)}
.app-showcase:before{content:"";position:absolute;inset:-18px;background:rgba(54,214,122,.13);border-radius:50%;z-index:-1;filter:blur(26px)}
.app-showcase img{display:block;margin:auto;max-height:450px;border-radius:28px}
.mock-screen{background:var(--surface-variant);border:1px solid var(--line);border-radius:22px;padding:20px}
.emergency{background:var(--danger-soft);border:1px solid #FFCDD2;border-radius:18px;padding:18px;color:#8E0000}
.steps{counter-reset:step}
.step{position:relative;padding-right:62px}
.step:before{counter-increment:step;content:counter(step);position:absolute;right:0;top:0;width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:var(--primary);color:#fff;font-weight:900}
.notice{padding:14px 16px;border-radius:14px;background:#FFF8E1;border:1px solid #FFE082}
footer{background:#123A63;color:#EAF3FC;padding:40px 0;margin-top:42px}
footer a{color:#fff}
.form{display:grid;gap:14px}
input,textarea,select{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:12px;font:inherit;background:#fff}
textarea{min-height:150px}
.account-shell{display:grid;grid-template-columns:260px 1fr;gap:22px;align-items:start}
.sidebar{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:var(--shadow);position:sticky;top:92px}
.sidebar a{display:block;padding:11px 12px;border-radius:12px;color:var(--text);font-weight:700}
.sidebar a:hover,.sidebar a.active{background:var(--primary-container);color:var(--primary-dark)}
.stat{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}
.stat .value{font-size:30px;font-weight:900;color:var(--primary-dark)}
.table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line)}
table{width:100%;border-collapse:collapse;background:#fff}
th,td{padding:13px;border-bottom:1px solid var(--line);text-align:right;white-space:nowrap}
.status{display:inline-flex;padding:5px 10px;border-radius:999px;font-size:13px;font-weight:800}
.status-active{background:var(--success-soft);color:var(--success)}
.status-off{background:#F1F5F9;color:#64748B}
.alert{padding:12px 14px;border-radius:12px;background:var(--success-soft);border:1px solid #A5D6A7}
.alert.error{background:#FFEBEE;border-color:#EF9A9A;color:#8E0000}
@media(max-width:900px){
  .hero-grid,.grid-3,.grid-4,.account-shell{grid-template-columns:1fr}
  .sidebar{position:static}
  nav{display:none}
}