:root{
  --bg:#070b16; --bg2:#0c1322; --card:#101a2e; --card2:#0e1729; --line:#1c2940;
  --txt:#e6ecf7; --muted:#8b96b0; --accent:#00e5c7; --accent2:#2fa9ff;
  --danger:#ff6b6b; --warn:#ffcc66; --radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--txt);
  font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,system-ui,sans-serif;
  line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)} .small{font-size:13px} .center{text-align:center}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px;word-break:break-all}
.grad{background:linear-gradient(100deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:12px;padding:13px 22px;font-size:15px;
  font-weight:700;cursor:pointer;transition:.15s;white-space:nowrap}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn.sm{padding:9px 16px;font-size:14px}
.btn.full{width:100%}
.btn.accent{background:linear-gradient(100deg,var(--accent),var(--accent2));color:#04121b;
  box-shadow:0 8px 24px rgba(0,229,199,.25)}
.btn.ghost{background:var(--bg2);color:var(--txt);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--accent)}
.btn:disabled{opacity:.55;cursor:default;transform:none}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(7,11,22,.82);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--txt)}
.brand:hover{text-decoration:none}
.brand-mark{width:30px;height:30px;display:block}
.brand-name{font-weight:800;font-size:17px;letter-spacing:-.3px}
.brand-name b{color:var(--accent);font-weight:800}
.nav-links{display:flex;gap:22px;margin-left:14px;flex:1}
.nav-links a{color:var(--muted);font-size:14.5px;font-weight:600}
.nav-links a:hover{color:var(--txt);text-decoration:none}
.nav-cta{display:flex;gap:10px}

/* hero */
.hero{position:relative;overflow:hidden;padding:84px 0 64px;text-align:center}
.hero-glow{position:absolute;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(700px 360px at 50% -8%,rgba(0,229,199,.16),transparent 60%),
             radial-gradient(600px 320px at 80% 10%,rgba(47,169,255,.12),transparent 60%)}
.hero-in{position:relative;z-index:1}
.hero-logo{width:120px;height:120px;border-radius:50%;margin-bottom:18px;
  box-shadow:0 0 60px rgba(0,229,199,.25);border:1px solid var(--line)}
.badge{display:inline-block;font-size:13px;color:var(--muted);background:var(--bg2);
  border:1px solid var(--line);border-radius:999px;padding:6px 14px;margin-bottom:22px}
.hero h1{font-size:clamp(34px,6vw,58px);line-height:1.05;letter-spacing:-1.5px;margin:0 0 18px;font-weight:850}
.lead{max-width:640px;margin:0 auto 28px;color:#c4cee2;font-size:17px}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-note{margin-top:22px;color:var(--muted);font-size:14px}

/* sections */
.section{padding:64px 0}
.section.alt{background:linear-gradient(180deg,var(--bg2),transparent)}
.sec-title{font-size:clamp(26px,4vw,36px);text-align:center;margin:0 0 8px;letter-spacing:-.6px;font-weight:800}
.sec-title.left{text-align:left}
.sec-sub{text-align:center;color:var(--muted);max-width:600px;margin:0 auto 34px}
.sec-sub.left{text-align:left;margin-left:0}
.grid{display:grid;gap:18px}
.features{grid-template-columns:repeat(3,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.feat .fi{font-size:30px;margin-bottom:10px}
.feat h3{margin:0 0 6px;font-size:18px}
.feat p{margin:0;color:var(--muted);font-size:14.5px}

/* plans */
.plans{grid-template-columns:repeat(3,1fr)}
.plan{display:flex;flex-direction:column;position:relative}
.plan.popular{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent) inset}
.plan .tag{position:absolute;top:-11px;left:22px;background:var(--accent);color:#04121b;
  font-size:11px;font-weight:800;padding:3px 10px;border-radius:999px}
.plan h3{margin:0 0 4px;font-size:19px}
.plan .price{font-size:32px;font-weight:850;margin:8px 0 2px}
.plan .price s{font-size:17px;color:var(--muted);font-weight:500;margin-left:8px}
.plan .per{color:var(--muted);font-size:13px}
.plan ul{list-style:none;padding:0;margin:16px 0 18px;flex:1}
.plan li{padding:6px 0;color:#cdd6e8;font-size:14.5px;display:flex;gap:8px;align-items:center}
.plan li::before{content:"✓";color:var(--accent);font-weight:800}

/* download */
.dl{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.dl-btns{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:18px}
.dl-links{display:flex;gap:18px;flex-wrap:wrap}
.dl-links a{color:var(--muted);font-size:14px}
.dl-phone{display:grid;place-items:center;padding:28px;background:var(--card2)}
.phone-screen{width:180px;height:300px;border-radius:28px;border:1px solid var(--line);
  background:radial-gradient(120px 120px at 50% 34%,rgba(0,229,199,.18),var(--bg));
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px}
.phone-mark{width:40px;height:40px}
.phone-btn{width:96px;height:96px;border-radius:50%;border:3px solid var(--accent);
  display:grid;place-items:center;font-size:42px;color:var(--accent);
  box-shadow:0 0 40px rgba(0,229,199,.35)}
.phone-status{color:var(--accent);font-weight:700;font-size:14px}

/* cabinet */
.cab{padding:40px 0 70px;min-height:60vh}
.auth{max-width:420px;margin:30px auto}
.auth-tabs{display:flex;gap:8px;margin-bottom:18px}
.auth-tab{flex:1;background:var(--bg2);border:1px solid var(--line);color:var(--muted);
  padding:10px;border-radius:10px;font-weight:700;cursor:pointer}
.auth-tab.active{color:#04121b;background:linear-gradient(100deg,var(--accent),var(--accent2));border-color:transparent}
.auth-err{background:rgba(255,107,107,.12);border:1px solid rgba(255,107,107,.4);
  color:#ffb4b4;border-radius:10px;padding:10px 12px;margin-bottom:12px;font-size:14px}
.inp{width:100%;background:var(--bg2);border:1px solid var(--line);border-radius:11px;
  color:var(--txt);padding:13px 14px;font-size:15px;margin-bottom:12px;outline:none}
.inp:focus{border-color:var(--accent)}
textarea.inp{resize:vertical}
.cab-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:24px}
.cab-head h2{margin:2px 0 0;font-size:24px}
.cab-grid{grid-template-columns:1fr 1fr}
.cab-sec{margin:34px 0 14px;font-size:20px}
.sub .row{display:flex;justify-content:space-between;align-items:center;padding:7px 0}
.sub .big{font-size:22px;font-weight:800}
.pill{font-size:12px;font-weight:800;padding:4px 11px;border-radius:999px}
.pill.ok{background:rgba(0,229,199,.16);color:var(--accent)}
.pill.no{background:rgba(255,107,107,.16);color:#ffb4b4}
.bar{height:7px;border-radius:5px;background:var(--bg2);overflow:hidden;margin:8px 0}
.bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2))}
.dev-list{display:flex;flex-direction:column;gap:10px}
.dev{display:flex;align-items:center;gap:12px;background:var(--card);border:1px solid var(--line);
  border-radius:12px;padding:12px 14px}
.dev .x{margin-left:auto;color:var(--danger);background:none;border:none;cursor:pointer;font-size:18px}

/* footer */
.foot{border-top:1px solid var(--line);padding:26px 0;color:var(--muted);font-size:14px}
.foot-in{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.foot-links{display:flex;gap:18px}
.foot-links a{color:var(--muted)}

/* toast */
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:12px 18px;font-size:14px;z-index:100;box-shadow:0 10px 30px rgba(0,0,0,.5)}

@media(max-width:820px){
  .features,.plans,.cab-grid,.dl{grid-template-columns:1fr}
  .nav-links{display:none}
}