:root{
  --blue:#1E6FD9; --blue-d:#1557ad; --orange:#FF5E2E; --green:#27B45F; --ink:#1A1818;
  --muted:#6B7280; --line:#E6E8EC; --bg:#F5F7FB; --card:#fff; --radius:16px;
  --shadow:0 1px 2px rgba(16,24,40,.04), 0 8px 24px rgba(16,24,40,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg); color:var(--ink); line-height:1.5; -webkit-font-smoothing:antialiased;
  font-size:16px;
}
a{color:var(--blue); text-decoration:none}
a:hover{text-decoration:underline}
h1{font-size:clamp(28px,5vw,44px); line-height:1.1; letter-spacing:-.02em; margin:0 0 12px}
h2{font-size:clamp(20px,3vw,26px); letter-spacing:-.01em; margin:28px 0 12px}
h3{font-size:17px; margin:0 0 10px; letter-spacing:-.01em}
p{margin:0 0 12px}
.muted{color:var(--muted)}
.fine{font-size:12.5px; color:var(--muted); line-height:1.45}
.center{text-align:center}

/* top bar */
.top{
  position:sticky; top:0; z-index:20; display:flex; align-items:center; gap:10px;
  padding:12px 18px; background:rgba(255,255,255,.92); backdrop-filter:saturate(1.6) blur(10px);
  border-bottom:1px solid var(--line);
}
.brand img{display:block}
.spacer{flex:1}
.nav{display:flex; gap:4px}
.nav-a{
  font-size:13.5px; font-weight:600; color:var(--muted); padding:7px 12px; border-radius:999px;
}
.nav-a:hover{background:#eef2f9; text-decoration:none}
.nav-a.is-on{background:var(--blue); color:#fff}

.wrap{max-width:1060px; margin:0 auto; padding:26px 18px 60px}

/* hero */
.hero{display:grid; grid-template-columns:1.25fr .9fr; gap:26px; align-items:start; margin-bottom:10px}
.kicker{
  display:inline-block; font-size:12px; font-weight:700; letter-spacing:.06em; text-transform:uppercase;
  color:var(--blue); background:rgba(30,111,217,.09); padding:5px 10px; border-radius:999px; margin-bottom:14px;
}
.lede{font-size:17px; color:#3d434d; max-width:56ch}
.hero-stats{display:flex; gap:10px; flex-wrap:wrap; margin-top:18px}
.hero-stats div{
  background:var(--card); border:1px solid var(--line); border-radius:14px; padding:10px 14px; min-width:104px;
}
.hero-stats b{display:block; font-size:20px; letter-spacing:-.02em}
.hero-stats span{font-size:11.5px; color:var(--muted); text-transform:uppercase; letter-spacing:.05em}

/* cards */
.card{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius);
  padding:18px; box-shadow:var(--shadow); margin-bottom:16px;
}
.card.join h2{margin-top:0}
.card.note{background:#fffaf3; border-color:#ffe2c4; font-size:14px}
.grid2{display:grid; grid-template-columns:1fr 1fr; gap:16px; align-items:start}
.two{display:grid; grid-template-columns:1fr 1fr; gap:28px; margin-top:28px}
.band{background:#0f1a2b; color:#fff; border-radius:22px; margin:34px 0; padding:34px 26px}
.band h2{color:#fff; margin-top:0}
.band .steps li{color:#cfd8e6}
.band .steps b{color:#fff}
.steps{margin:0; padding-left:20px}
.steps li{margin-bottom:10px}

/* forms */
.field{display:block; margin-bottom:12px}
.field span{display:block; font-size:12.5px; font-weight:600; color:var(--muted); margin-bottom:6px}
input[type=text],input[type=email],input[type=number],input:not([type]){
  width:100%; padding:12px 14px; border:1px solid var(--line); border-radius:12px; font-size:16px;
  background:#fbfcfe; color:var(--ink); outline:none;
}
input:focus{border-color:var(--blue); box-shadow:0 0 0 3px rgba(30,111,217,.13); background:#fff}
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  border:0; border-radius:12px; padding:12px 18px; font-size:15px; font-weight:650;
  cursor:pointer; font-family:inherit; transition:transform .06s ease, background .15s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--blue); color:#fff}
.btn-primary:hover{background:var(--blue-d); text-decoration:none}
.btn-ghost{background:#eef2f9; color:var(--ink)}
.btn-ghost:hover{background:#e3e9f4; text-decoration:none}
.btn-danger{background:#fff1ee; color:#c0341a}
.btn-danger:hover{background:#ffe2db; text-decoration:none}
.btn-block{display:flex; width:100%; margin-top:10px}
.mt{margin-top:12px}
.inline-form{display:block}
.quick{display:flex; gap:8px; flex-wrap:wrap; margin-top:12px}
.chip{
  border:1px solid var(--line); background:#fff; border-radius:999px; padding:8px 14px;
  font-size:13.5px; font-weight:600; color:var(--ink); cursor:pointer; font-family:inherit;
}
.chip:hover{border-color:#c9d3e4; background:#f7f9fd}
.miles-form{display:flex; gap:8px}
.miles-in{flex:1}

/* alerts */
.alert{
  background:#fff4f0; border:1px solid #ffd8c8; color:#9a3412; border-radius:12px;
  padding:11px 14px; font-size:14px; margin-bottom:16px;
}
.alert.ok{background:#f0fbf4; border-color:#c6ecd4; color:#14663a}

/* rows + tables */
.row{display:flex; justify-content:space-between; gap:14px; padding:9px 0; border-bottom:1px dashed var(--line); font-size:14.5px}
.row:last-child{border-bottom:0}
.row span{color:var(--muted)}
.row b{font-variant-numeric:tabular-nums}
.row.total{border-top:2px solid var(--line); border-bottom:0; font-weight:700; padding-top:11px}
.tbl{width:100%; border-collapse:collapse; font-size:13.5px; margin-top:6px}
.tbl th{text-align:left; font-size:11.5px; text-transform:uppercase; letter-spacing:.05em; color:var(--muted); padding:6px 8px; border-bottom:1px solid var(--line); font-weight:700}
.tbl td{padding:8px; border-bottom:1px solid #f1f3f7; vertical-align:top}
.tbl tr:last-child td{border-bottom:0}
.num{text-align:right; font-variant-numeric:tabular-nums}
.pos{color:var(--green)}
.neg{color:#c0341a}
.feed{list-style:none; margin:0; padding:0}
.feed li{font-size:14px; padding:10px 0; border-bottom:1px solid #f1f3f7}
.feed li:last-child{border-bottom:0}
.feed .when{display:block; font-size:11.5px; color:var(--muted); margin-bottom:2px}

/* dashboard */
.dash-head{display:flex; justify-content:space-between; align-items:center; gap:16px; margin-bottom:16px}
.dash-head h1{margin:0; font-size:26px}
.badge{font-size:12px; font-weight:700; padding:6px 12px; border-radius:999px}
.badge.ok{background:#eafaf0; color:#14663a}
.badge.off{background:#f2f3f5; color:var(--muted)}
.card.big{padding:20px}
.big-top{display:flex; justify-content:space-between; gap:16px; margin-bottom:14px}
.big-top .right{text-align:right}
.lbl{display:block; font-size:11.5px; text-transform:uppercase; letter-spacing:.06em; color:var(--muted); margin-bottom:4px}
.big-num{font-size:clamp(24px,4vw,34px); letter-spacing:-.02em; font-variant-numeric:tabular-nums}
.bar{height:8px; background:#eef1f6; border-radius:999px; overflow:hidden; margin-top:8px}
.bar i{display:block; height:100%; background:linear-gradient(90deg,var(--blue),#4f92ea); border-radius:999px}
.bar.big-bar{height:12px}
.big-foot{display:flex; justify-content:space-between; gap:12px; margin-top:10px; font-size:13px; color:var(--muted)}

/* ladder */
.ladder{display:grid; grid-template-columns:repeat(auto-fill,minmax(150px,1fr)); gap:10px}
.lvl{background:#fff; border:1px solid var(--line); border-radius:14px; padding:13px}
.lvl.is-now{border-color:var(--blue); box-shadow:0 0 0 3px rgba(30,111,217,.10)}
.lvl.is-full{background:#f7f8fa; color:var(--muted)}
.lvl.is-open{border-style:dashed}
.lvl-h{display:flex; justify-content:space-between; align-items:center; gap:6px; margin-bottom:6px}
.lvl-n{font-size:11.5px; font-weight:700; text-transform:uppercase; letter-spacing:.05em; color:var(--muted)}
.lvl-fee{font-size:22px; font-weight:750; letter-spacing:-.02em}
.lvl-meta{font-size:12.5px; color:var(--muted)}
.lvl-left{font-size:11.5px; color:var(--blue); font-weight:650; margin-top:5px}
.pill{font-size:10px; font-weight:800; letter-spacing:.05em; text-transform:uppercase; padding:3px 7px; border-radius:999px}
.pill-blue{background:rgba(30,111,217,.12); color:var(--blue)}
.pill-grey{background:#e9ebef; color:#6b7280}

.foot{max-width:1060px; margin:0 auto; padding:26px 18px 60px; border-top:1px solid var(--line); color:var(--muted); font-size:12.5px}
.foot img{opacity:.75; margin-bottom:10px}

@media (max-width:860px){
  .hero{grid-template-columns:1fr}
  .two{grid-template-columns:1fr; gap:22px}
  .grid2{grid-template-columns:1fr}
  .top{padding:10px 14px}
  .top-nav{overflow-x:auto; -webkit-overflow-scrolling:touch; max-width:58vw}
  .nav-a{padding:6px 10px; font-size:13px; white-space:nowrap}
  .wrap{padding:20px 14px 50px}
  .dash-head h1{font-size:23px}
}
@media (max-width:420px){
  .hero-stats div{min-width:88px; padding:9px 11px}
  .big-num{font-size:26px}
}

/* PWA install */
.install-btn{
  border:1px solid rgba(30,111,217,.3); background:rgba(30,111,217,.08); color:var(--blue);
  font-size:12.5px; font-weight:750; padding:7px 13px; border-radius:999px; cursor:pointer;
  font-family:inherit; white-space:nowrap;
}
.install-btn:hover{background:rgba(30,111,217,.14)}
.ios-hint{
  position:fixed; left:50%; bottom:18px; transform:translateX(-50%); z-index:50;
  max-width:min(92vw,420px); background:#0f1a2b; color:#fff; font-size:13.5px; line-height:1.45;
  padding:12px 16px; border-radius:14px; box-shadow:0 12px 30px rgba(15,26,43,.3);
}
@media (display-mode: standalone){
  .top{padding-top:14px}
}

/* --- accounts: header chip + sign-in view --- */
.who-form { margin: 0; }
.who {
  background: #EEF3FB; border: 1px solid #D5E1F2; color: #1A1818;
  font: inherit; font-size: 12.5px; font-weight: 600; cursor: pointer;
  border-radius: 999px; padding: 6px 12px; display: inline-flex; align-items: center; gap: 6px;
}
.who:hover { background: #E2EBFA; }
.who-role { background: #1E6FD9; color: #fff; font-size: 10px; text-transform: uppercase; letter-spacing: .06em; border-radius: 999px; padding: 2px 6px; }
.who-out { color: #1E6FD9; font-weight: 700; }
.narrow { max-width: 460px; }
.err { color: #C0331B; font-weight: 700; }

/* live device session */
#tracker .trk-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 12px 0 10px;
}
#tracker .trk-stats > div {
  background: #F5F7FB;
  border-radius: 12px;
  padding: 10px 8px;
  text-align: center;
}
#tracker .trk-stats .lbl {
  display: block;
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: #6B7280;
}
#tracker .trk-stats b {
  display: block;
  font-size: 22px;
  line-height: 1.2;
  color: #1A1818;
  font-variant-numeric: tabular-nums;
}
.trk-status {
  font-size: 13px;
  font-weight: 600;
  color: #6B7280;
  padding: 8px 10px;
  border-radius: 10px;
  background: #F5F7FB;
  margin-bottom: 10px;
}
.trk-status.live {
  color: #0F7A3D;
  background: #E6F7EE;
  box-shadow: inset 0 0 0 1px #27B45F33;
}
#tracker .btn + .btn { margin-top: 8px; }
.trk-log {
  margin-top: 10px;
  max-height: 120px;
  overflow-y: auto;
  font-size: 12px;
  line-height: 1.5;
  color: #6B7280;
  border-top: 1px dashed #E5E7EB;
  padding-top: 8px;
}
.trk-log:empty { display: none; }

.trk-diag {
  font-size: 12px;
  line-height: 1.45;
  color: #9AA9C0;
  margin: 6px 0 2px;
  font-variant-numeric: tabular-nums;
}
.trk-diag .bad { color: #FFB4A2; }