:root{
  --bg:#0a0c10; --panel:#151a22; --panel2:#1b2230;
  --line:rgba(255,255,255,.07);
  --text:#eef1f5; --dim:#9aa5b1; --faint:#6e7885;
  --blue:#3d7bff; --blue-deep:#16346e;
  --yellow:#f2c53d; --red:#e22b2b; --grey:#a7b0bc;
  --font:"Segoe UI",system-ui,-apple-system,Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--bg);color:var(--text);font-family:var(--font);font-size:15px;line-height:1.55}
body{background:
  radial-gradient(900px 420px at 85% -10%, rgba(61,123,255,.14), transparent 60%),
  radial-gradient(700px 380px at -10% 30%, rgba(242,197,61,.07), transparent 55%),
  var(--bg);min-height:100vh}
::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:#232a36;border-radius:8px}
a{color:var(--blue)}

#splash{position:fixed;inset:0;z-index:500;background:#0a0c10;display:flex;flex-direction:column;gap:16px;align-items:center;justify-content:center;font-size:13px;letter-spacing:4px;color:var(--dim);transition:opacity .35s}
#splash.hide{opacity:0;pointer-events:none}
.spinner{width:46px;height:46px;border-radius:50%;border:3px solid #232a36;border-top-color:var(--blue);border-right-color:var(--yellow);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.topbar{position:sticky;top:0;z-index:100;display:flex;align-items:center;gap:22px;padding:14px 26px;
  background:rgba(10,12,16,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.brand{font-size:19px;font-weight:800;letter-spacing:1px;display:flex;align-items:center;gap:10px}
.mark{width:12px;height:12px;border-radius:50%;background:conic-gradient(var(--blue),var(--yellow),var(--red),var(--blue))}
.topbar nav{display:flex;gap:4px;flex:1;overflow-x:auto}
.navbtn{background:none;border:0;color:var(--dim);font:inherit;font-size:14px;padding:9px 16px;border-radius:999px;cursor:pointer;white-space:nowrap;transition:.2s}
.navbtn:hover{color:var(--text);background:rgba(255,255,255,.05)}
.navbtn.active{background:linear-gradient(180deg,var(--blue-deep),#10203f);color:#fff;box-shadow:inset 0 0 0 1px rgba(61,123,255,.5)}

.tab{display:none;padding:28px clamp(16px,4vw,54px) 60px;max-width:1280px;margin:0 auto;animation:fade .3s}
.tab.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1}}

.sec-head{display:flex;align-items:center;gap:10px;font-size:12px;letter-spacing:3px;color:var(--dim);font-weight:600;margin:26px 0 16px}
.tick{width:26px;height:3px;border-radius:2px;background:var(--yellow)}

.hero{padding:56px 0 30px;max-width:860px}
.hero-kicker{font-size:11px;letter-spacing:4px;color:var(--blue);font-weight:700;margin-bottom:16px}
.hero h1{font-size:clamp(30px,5vw,54px);line-height:1.06;font-weight:800;letter-spacing:-1px;margin-bottom:18px}
.hero p{color:var(--dim);font-size:17px;max-width:640px}
.hero-cta{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}

button{font:inherit;border:1px solid var(--line);background:var(--panel);color:var(--text);padding:11px 20px;border-radius:999px;cursor:pointer;transition:.18s;white-space:nowrap}
button:hover{border-color:var(--blue);transform:translateY(-1px)}
button.primary{background:linear-gradient(180deg,#2c62d6,#1d3f94);border-color:transparent;box-shadow:0 10px 26px -12px rgba(61,123,255,.7)}
button.primary:hover{filter:brightness(1.1)}
button:disabled{opacity:.45;cursor:default;transform:none}

.panel{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:20px;padding:20px;box-shadow:0 22px 46px -24px rgba(0,0,0,.65)}
.card-title{font-size:11px;letter-spacing:2.5px;color:var(--dim);font-weight:700;margin-bottom:12px}
.dim{color:var(--dim)}.faint{color:var(--faint)}

.stat-strip{display:flex;gap:14px;flex-wrap:wrap;margin:10px 0 8px}
.stat{flex:1;min-width:130px;background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:18px;padding:18px 20px}
.stat b{display:block;font-size:30px;font-weight:800;letter-spacing:-1px;color:var(--blue)}
.stat span{font-size:12px;color:var(--faint);letter-spacing:1px;text-transform:uppercase}

.how-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.how-step{background:rgba(255,255,255,.025);border:1px solid var(--line);border-radius:18px;padding:20px}
.how-step b{font-size:26px;color:var(--yellow);font-weight:800}
.mod-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.mod{border-radius:18px;padding:22px;cursor:pointer;border:1px solid var(--line);background:linear-gradient(180deg,var(--panel2),var(--panel));transition:.2s}
.mod:hover{transform:translateY(-3px)}
.mod b{font-size:16px;display:block;margin-bottom:6px}
.mod p{color:var(--dim);font-size:13.5px}
.mod.blue{border-top:3px solid var(--blue)}.mod.yellow{border-top:3px solid var(--yellow)}
.mod.red{border-top:3px solid var(--red)}.mod.grey{border-top:3px solid var(--grey)}
.foot{margin-top:44px;padding-top:18px;border-top:1px solid var(--line);color:var(--faint);font-size:12.5px;text-align:center}

.live-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(300px,.9fr);gap:18px;align-items:start}
.stage{display:flex;flex-direction:column;gap:14px}
.video-shell{position:relative;border-radius:24px;overflow:hidden;background:#000;border:1px solid var(--line);
  box-shadow:0 30px 70px -30px rgba(0,0,0,.9)}
.video-shell::before{content:"";position:absolute;inset:0;border-radius:24px;padding:2px;pointer-events:none;
  background:linear-gradient(120deg,rgba(61,123,255,.5),transparent 40%,transparent 60%,rgba(242,197,61,.4));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude}
video,#overlay{width:100%;display:block;aspect-ratio:16/9;object-fit:contain;background:#000}
#overlay{position:absolute;inset:0}
.badge{position:absolute;top:12px;left:12px;background:rgba(10,12,16,.75);border:1px solid var(--line);border-radius:999px;
  padding:5px 12px;font-size:11px;letter-spacing:2px;color:var(--dim)}
.badge.on{color:#7ee0a3;border-color:rgba(126,224,163,.4)}

.controls{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
select,input[type=date],input[type=time],input[type=text]{
  background:var(--panel);border:1px solid var(--line);color:var(--text);font:inherit;font-size:14px;
  padding:10px 14px;border-radius:999px;outline:none;transition:.2s;max-width:250px}
select:focus,input:focus{border-color:var(--blue)}
.filebtn{display:inline-block;padding:11px 20px;border:1px solid var(--line);border-radius:999px;cursor:pointer;color:var(--text);background:var(--panel);transition:.18s}
.filebtn:hover{border-color:var(--blue);transform:translateY(-1px)}
.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:12px}
.row label{font-size:12px;color:var(--faint);display:flex;flex-direction:column;gap:4px}

.side{display:flex;flex-direction:column;gap:14px}
.status-line{display:flex;align-items:center;gap:10px;font-weight:600;margin-bottom:4px}
.dot{width:10px;height:10px;border-radius:50%;background:var(--faint)}
.dot.on{background:#7ee0a3;box-shadow:0 0 12px rgba(126,224,163,.7)}
.dot.warn{background:var(--yellow);box-shadow:0 0 12px rgba(242,197,61,.7)}
.dot.alert{background:var(--red);box-shadow:0 0 12px rgba(226,43,43,.8)}

.prob{display:grid;grid-template-columns:62px 1fr 44px;align-items:center;gap:10px;font-size:12px;margin:9px 0;color:var(--dim)}
.prob b{font-size:13px;color:var(--text);text-align:right}
.bar{height:8px;border-radius:99px;background:rgba(255,255,255,.06);overflow:hidden}
.bar i{display:block;height:100%;width:0;border-radius:99px;transition:width .5s ease;background:var(--blue)}
#probWet .bar i{background:var(--red)}#probDamp .bar i{background:var(--grey)}
#probDrying .bar i{background:var(--yellow)}#probDry .bar i{background:var(--blue)}

.gauge{height:12px;border-radius:99px;background:rgba(255,255,255,.06);overflow:hidden}
.gauge-fill{height:100%;width:0;border-radius:99px;background:linear-gradient(90deg,var(--blue),var(--yellow) 60%,var(--red));transition:width .5s ease}
.gauge-num{display:flex;align-items:baseline;gap:8px;margin-top:8px}
.gauge-num b{font-size:30px;letter-spacing:-1px}

.rec p{line-height:1.55;margin:6px 0 12px;font-size:14.5px}
#recButtons{display:flex;gap:10px}

.grid2{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:18px;margin-top:18px}
.chart-panel .chart-wrap{height:260px;position:relative}
.table-wrap{max-height:240px;overflow:auto;border:1px solid var(--line);border-radius:14px}
table{width:100%;border-collapse:collapse;font-size:13px}
th{position:sticky;top:0;background:var(--panel2);color:var(--faint);text-align:left;padding:8px 12px;font-size:11px;letter-spacing:1px}
td{padding:8px 12px;border-top:1px solid var(--line)}
.mini{max-height:180px;overflow:auto;display:flex;flex-direction:column;gap:6px;font-size:13px}
.mini div{background:rgba(255,255,255,.03);border-radius:10px;padding:7px 10px;border-left:3px solid var(--blue)}
.mini div.warn{border-left-color:var(--yellow)}.mini div.alert{border-left-color:var(--red)}
.session-strip{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.session-strip span{background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:14px;padding:8px 16px;font-size:12.5px;color:var(--dim)}
.session-strip b{color:var(--text);font-weight:700}

.wx-bar{display:flex;gap:12px;align-items:center;margin-bottom:18px;flex-wrap:wrap}
.wx-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.wx-card{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:20px;padding:18px;transition:.2s}
.wx-card:hover{transform:translateY(-2px);border-color:rgba(61,123,255,.4)}
.wx-card h3{font-size:15px;margin-bottom:2px}
.wx-card .loc{font-size:12px;color:var(--faint);margin-bottom:10px}
.wx-now{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.wx-now .icon{font-size:30px}
.wx-now b{font-size:24px}
.wx-stats{display:flex;gap:14px;font-size:12px;color:var(--dim);flex-wrap:wrap;margin-bottom:10px}
.wx-past{display:flex;gap:6px;margin-top:10px}
.wx-past div{flex:1;text-align:center;font-size:10.5px;color:var(--faint);background:rgba(255,255,255,.03);border-radius:10px;padding:6px 2px}
.wx-past b{display:block;font-size:13px;color:var(--text)}

#waveform{width:100%;background:#0d1014;border-radius:16px}
.pill{display:inline-block;font-size:11px;letter-spacing:1px;border-radius:999px;padding:3px 10px;margin-right:6px}
.pill.blue{background:rgba(61,123,255,.18);color:#9dbfff}
.pill.yellow{background:rgba(242,197,61,.16);color:#ffe08a}
.pill.red{background:rgba(226,43,43,.16);color:#ff9d9d}
.pill.grey{background:rgba(167,176,188,.16);color:#cdd4dc}

.tire-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.tire-item{display:grid;grid-template-columns:130px 1fr;gap:18px;background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:18px;padding:20px;align-items:start}
.tire-name{font-size:17px;font-weight:800;letter-spacing:1px}
.tire-tag{display:inline-block;width:44px;height:8px;border-radius:99px;margin-bottom:8px}
.tire-item p{color:var(--dim);font-size:14px}

.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.g-item{background:var(--panel);border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:.2s}
.g-item:hover{transform:translateY(-2px)}
.g-item img{width:100%;display:block;aspect-ratio:16/9;object-fit:cover;background:#000}
.g-item .g-meta{padding:10px 12px;font-size:12px;color:var(--dim);line-height:1.5}
.g-item .g-meta b{color:var(--text)}
.g-empty{grid-column:1/-1;text-align:center;color:var(--faint);padding:60px 0;border:1px dashed var(--line);border-radius:18px}

#toasts{position:fixed;bottom:22px;right:22px;z-index:400;display:flex;flex-direction:column;gap:10px}
.toast{background:#171c25;border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:14px;padding:12px 18px;font-size:13.5px;box-shadow:0 16px 36px -16px rgba(0,0,0,.8);animation:slide .3s}
.toast.warn{border-left-color:var(--yellow)}.toast.alert{border-left-color:var(--red)}
@keyframes slide{from{opacity:0;transform:translateX(20px)}to{opacity:1}}

@media(max-width:900px){
  .live-grid,.grid2{grid-template-columns:1fr}
  .tire-item{grid-template-columns:1fr}
  .topbar{flex-wrap:wrap}
}

/* racing motifs */
.flag{height:8px;border-radius:4px;background:
  conic-gradient(#fff 25%,#0a0c10 0 50%,#fff 0 75%,#0a0c10 0) 0 0/16px 16px;opacity:.85}
.topbar{position:relative}
.topbar::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;
  background:linear-gradient(90deg,var(--blue) 0 25%,var(--yellow) 0 50%,var(--red) 0 75%,var(--grey) 0 100%)}
.sec-head::before{content:"🏁 "}
/* translucent hero car */
.hero{position:relative}
.hero-car{position:absolute;right:-4%;top:6%;width:min(640px,70vw);opacity:.10;
  pointer-events:none;z-index:0;filter:grayscale(1) contrast(1.1)}
.hero>*{position:relative;z-index:1}
/* fusion panel */
.fusion-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin-bottom:12px}
.fusion-cell{background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:14px;padding:10px 12px;font-size:12.5px}
.fusion-cell span{display:block;font-size:10px;letter-spacing:1.5px;margin-bottom:4px;text-transform:uppercase}
.fusion-cell b{font-size:13.5px;color:var(--text)}
.verdict{font-size:15px;line-height:1.6;margin:8px 0 10px}
.actions{margin:0;padding-left:18px}
.actions li{font-size:13.5px;color:var(--dim);margin:4px 0}