:root{
  --cyan:#00B7FF; --cyan2:#19e3ff; --blue:#2563eb; --gold:#F5B84C;
  --grad:linear-gradient(135deg,#19e3ff,#00B7FF 45%,#2563eb);
  --r:18px;
}
[data-theme="dark"]{
  --bg:#0B1220; --panel:#0e1730; --card:rgba(19,29,54,.66); --solid:#121d38;
  --line:rgba(0,183,255,.16); --line2:rgba(148,178,255,.09);
  --tx:#EAF2FF; --tx2:#93a7cc; --tx3:#5d7098;
  --chip:rgba(13,22,44,.85); --glow:0 0 30px rgba(0,183,255,.07);
  --shadow:0 24px 60px rgba(2,6,18,.55); --nav:#0c1428;
}
[data-theme="light"]{
  --bg:#eef3fa; --panel:#ffffff; --card:rgba(255,255,255,.9); --solid:#ffffff;
  --line:rgba(0,140,220,.18); --line2:rgba(11,18,32,.08);
  --tx:#0B1220; --tx2:#44577c; --tx3:#8296b8;
  --chip:#f2f7fd; --glow:0 0 34px rgba(0,183,255,.10);
  --shadow:0 18px 44px rgba(15,35,80,.10); --nav:#ffffff;
}
[data-theme="lowstim"]{
  --bg:#13161d; --panel:#171b23; --card:#1a1f29; --solid:#1a1f29;
  --line:rgba(255,255,255,.09); --line2:rgba(255,255,255,.06);
  --tx:#d9dee7; --tx2:#9aa4b5; --tx3:#6a7486;
  --chip:#20252f; --glow:none; --shadow:none; --nav:#171b23;
  --cyan:#8fb6cf; --cyan2:#8fb6cf; --blue:#63799a;
  --grad:linear-gradient(135deg,#7ea9c6,#63799a);
}
[data-theme="lowstim"] *{animation:none!important;transition:none!important}
[data-theme="lowstim"] #net{display:none}
[data-theme="eye"]{
  --bg:#1a1712; --panel:#1f1b15; --card:#242019; --solid:#242019;
  --line:rgba(240,200,126,.16); --line2:rgba(255,235,200,.09);
  --tx:#f6ecd9; --tx2:#cdc1a6; --tx3:#968a70;
  --chip:#282318; --glow:none; --shadow:none; --nav:#1f1b15;
  --cyan:#e8b45a; --cyan2:#f0c87e; --blue:#b98a3e; --gold:#f0c87e;
  --grad:linear-gradient(135deg,#f0c87e,#d99a3e);
}
[data-theme="eye"] #net{display:none}
[data-theme="eye"] body,[data-theme="eye"]{font-size:17px}
[data-theme="eye"] .vign{background:none}

*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{background:var(--bg);color:var(--tx);font-family:'Inter',system-ui,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
#net{position:fixed;inset:0;z-index:0;opacity:.22}
.vign{position:fixed;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(1100px 600px at 80% -15%,rgba(0,183,255,.06),transparent 62%),
             radial-gradient(800px 600px at -5% 115%,rgba(37,99,235,.05),transparent 60%)}
[data-theme="light"] .vign{background:radial-gradient(1100px 600px at 80% -15%,rgba(0,183,255,.10),transparent 62%)}
svg.i{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}

/* top bar (onboarding) */
.obtop{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;max-width:1180px;margin:0 auto;padding:22px 24px 0}
.brand{display:flex;align-items:center;gap:10px;font-size:1.35rem}
.brand img{width:40px;height:40px;filter:drop-shadow(0 0 6px rgba(0,183,255,.3))}
.wm{display:inline-flex;align-items:baseline;letter-spacing:-.045em;font-weight:800;position:relative}
.wm i{font-style:normal;font-weight:400;color:var(--tx2);letter-spacing:-.02em;margin-right:1px}
.wm b{font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-left:1px}
.wm u{width:5px;height:5px;border-radius:50%;background:var(--cyan);margin-left:5px;align-self:center;box-shadow:0 0 7px var(--cyan),0 0 1px var(--cyan);text-decoration:none}
.wm::after{content:"";position:absolute;left:0;bottom:-5px;width:34%;height:2px;background:var(--grad);border-radius:2px;opacity:.85}
.modes{position:relative;display:flex;gap:5px;align-items:center}
.modes .tgl,.modes .dots{display:flex;align-items:center;justify-content:center;gap:7px;border:1px solid var(--line2);background:var(--chip);color:var(--tx2);width:40px;height:40px;border-radius:12px;cursor:pointer;transition:.2s;flex:none}
.modes .tgl:hover,.modes .dots:hover{color:var(--tx);border-color:var(--line)}
.modes svg.i{width:16px;height:16px}
.modes .menu{position:absolute;top:48px;right:0;min-width:190px;background:var(--solid);border:1px solid var(--line2);border-radius:14px;padding:7px;box-shadow:var(--shadow);display:none;flex-direction:column;gap:2px;z-index:40}
.modes .menu.open{display:flex}
.modes .menu button{display:flex;align-items:center;gap:10px;border:0;background:transparent;color:var(--tx2);padding:10px 12px;border-radius:10px;cursor:pointer;font:600 .82rem 'Inter';text-align:left;transition:.15s}
.modes .menu button:hover{background:var(--chip);color:var(--tx)}
.modes .menu button.on{color:#fff;background:var(--grad)}

/* onboarding */
.stage{position:relative;z-index:2;max-width:600px;margin:4.5vh auto 40px;padding:0 20px}
.card{background:var(--card);backdrop-filter:blur(18px);border:1px solid var(--line);border-radius:26px;padding:36px;box-shadow:var(--shadow)}
.dots{display:flex;gap:7px;margin:0 0 26px}
.dots i{height:4px;flex:1;background:var(--line2);border-radius:9px;position:relative}
.dots i.on::after{content:"";position:absolute;inset:0;background:var(--grad);border-radius:9px}
.heroBrain{display:flex;justify-content:center;margin:2px 0 20px}
.heroBrain img{width:132px;filter:drop-shadow(0 0 26px rgba(0,183,255,.65)) drop-shadow(0 0 70px rgba(0,183,255,.28));animation:float 5.5s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
h1{font-size:2rem;line-height:1.16;font-weight:800;letter-spacing:-.035em;text-align:center}
h1 .hl{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.sub{color:var(--tx2);margin:13px auto 26px;font-size:1rem;line-height:1.6;text-align:center;max-width:44ch}
.stepno{display:block;text-align:center;color:var(--cyan);font:700 .72rem 'Inter';letter-spacing:.18em;text-transform:uppercase;margin-bottom:12px}
.opts{display:flex;flex-direction:column;gap:11px}
.opt{display:flex;align-items:center;gap:15px;background:var(--chip);border:1.5px solid var(--line2);border-radius:15px;padding:15px 17px;cursor:pointer;transition:border-color .18s, box-shadow .18s;font-size:.97rem;font-weight:500}
.opt:hover{border-color:var(--cyan)}
.opt.sel{border-color:var(--cyan);box-shadow:var(--glow), inset 0 0 0 100vmax rgba(0,183,255,.05)}
.opt .oi{width:38px;height:38px;border-radius:11px;background:rgba(0,183,255,.10);border:1px solid var(--line);display:grid;place-items:center;color:var(--cyan);flex:none}
.opt small{display:block;color:var(--tx2);font-size:.82rem;font-weight:400;margin-top:3px;line-height:1.4}
.tk{margin-left:auto;width:22px;height:22px;border-radius:50%;border:2px solid var(--tx3);display:grid;place-items:center;flex:none;transition:.15s}
.opt.sel .tk{background:var(--grad);border-color:transparent}
.opt.sel .tk::after{content:"";width:12px;height:12px;background:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="white" stroke-width="3.4" stroke-linecap="round" stroke-linejoin="round"><path d="M4 12.5l4.5 4.5L20 6.5"/></svg>') center/contain no-repeat}
.note{display:flex;gap:11px;align-items:flex-start;font-size:.83rem;color:var(--tx2);background:var(--chip);border:1px solid var(--line2);border-radius:13px;padding:13px 15px;margin-top:18px;line-height:1.5}
.note svg.i{width:17px;height:17px;color:var(--cyan);margin-top:1px}
.row{display:flex;gap:12px;margin-top:26px}
.btn{border:0;border-radius:14px;padding:16px 22px;font:700 .98rem 'Inter';cursor:pointer;transition:transform .15s, box-shadow .2s}
.btn.primary{flex:1;background:var(--grad);color:#fff;box-shadow:0 10px 30px rgba(0,183,255,.30)}
.btn.primary:hover{transform:translateY(-1px);box-shadow:0 14px 36px rgba(0,183,255,.38)}
.btn.ghost{background:transparent;color:var(--tx2);border:1.5px solid var(--line2)}
input[type=text],input[type=email],input[type=password],textarea{width:100%;background:var(--chip);border:1.5px solid var(--line2);border-radius:14px;color:var(--tx);padding:16px;font:500 1rem 'Inter';outline:0;transition:border-color .2s}
input:focus,textarea:focus{border-color:var(--cyan)}
textarea{min-height:140px;resize:vertical;line-height:1.6}
.trio{display:grid;grid-template-columns:1fr;gap:10px;margin:24px 0 4px}
@media(min-width:560px){.trio{grid-template-columns:1fr 1fr 1fr}}
.trio .t{background:var(--chip);border:1px solid var(--line2);border-radius:14px;padding:15px;text-align:center}
.trio .t svg.i{color:var(--cyan);margin-bottom:8px;width:22px;height:22px}
.trio .t b{display:block;font-size:.88rem;margin-bottom:3px}
.trio .t span{color:var(--tx2);font-size:.78rem;line-height:1.4}
.fade{animation:up .45s cubic-bezier(.2,.7,.3,1)}
@keyframes up{from{opacity:0;transform:translateY(16px)}to{opacity:1}}

/* ready screen */
.readyGrid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:22px 0 4px}
.readyGrid .rg{background:var(--chip);border:1px solid var(--line2);border-radius:14px;padding:14px;font-size:.85rem}
.readyGrid .rg svg.i{color:var(--cyan);width:17px;height:17px;margin-bottom:7px}
.readyGrid .rg b{display:block;font-size:.9rem}
.readyGrid .rg span{color:var(--tx2);font-size:.78rem}

/* app shell */
.app{position:relative;z-index:2;display:none;min-height:100vh}
.side{position:fixed;z-index:5;top:0;left:0;bottom:0;width:232px;background:var(--nav);border-right:1px solid var(--line2);padding:22px 14px;display:flex;flex-direction:column;gap:4px}
.side .brand{font-size:1.15rem;margin:0 8px 22px}
.side .brand img{width:34px;height:34px}
.nav{display:flex;flex-direction:column;gap:3px}
.nav a{display:flex;align-items:center;gap:12px;color:var(--tx2);text-decoration:none;font:600 .9rem 'Inter';padding:11px 13px;border-radius:12px;cursor:pointer;transition:.15s;border:1px solid transparent}
.nav a:hover{color:var(--tx);background:var(--chip)}
.nav a.on{color:#fff;background:linear-gradient(90deg,rgba(0,183,255,.22),rgba(37,99,235,.12));border:1px solid var(--line)}
[data-theme="light"] .nav a.on{color:var(--blue)}
.side .foot{font-size:.72rem;color:var(--tx3);padding:0 8px;line-height:1.5}
.side .prof{margin-top:auto;display:flex;align-items:center;gap:11px;background:var(--chip);border:1px solid var(--line2);border-radius:14px;padding:11px 12px;margin-bottom:10px}
.side .prof .pav{width:36px;height:36px;border-radius:50%;background:var(--grad);display:grid;place-items:center;color:#fff;font:700 .95rem 'Inter';flex:none}
.side .prof b{display:block;font-size:.85rem}
.side .prof span{font-size:.7rem;color:var(--gold);font-weight:600}
.main{margin-left:232px;padding:26px 34px 46px;max-width:none;width:auto}
.top{display:flex;align-items:center;gap:16px;margin-bottom:24px;flex-wrap:wrap}
.top h2{font-size:1.55rem;font-weight:800;letter-spacing:-.03em}
.top p{color:var(--tx2);font-size:.9rem;margin-top:3px}
.top .modes{margin-left:auto}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:16px}
@media(min-width:1500px){.main{padding:30px 44px 50px}}
.w{background:var(--card);backdrop-filter:blur(16px);border:1px solid var(--line2);border-radius:var(--r);padding:21px;box-shadow:var(--shadow);position:relative;grid-column:span 4;min-width:0}
.w.span6{grid-column:span 6}.w.span12{grid-column:span 12}
@media(max-width:1020px){.w,.w.span6{grid-column:span 6}}
@media(max-width:680px){.w,.w.span6,.w.span12{grid-column:span 12}}
.w h3{display:flex;align-items:center;gap:9px;font:700 .74rem 'Inter';text-transform:uppercase;letter-spacing:.13em;color:var(--tx2);margin-bottom:14px}
.w h3 svg.i{width:16px;height:16px;color:var(--cyan)}
.why{position:absolute;top:16px;right:16px;font:600 .66rem 'Inter';color:var(--tx3);border:1px solid var(--line2);border-radius:99px;padding:3px 9px;cursor:help}
.big{font-size:2rem;font-weight:800;letter-spacing:-.03em}
.muted{color:var(--tx2);font-size:.88rem;line-height:1.55}
.w ul{list-style:none}
.w li{display:flex;gap:10px;align-items:center;padding:9px 0;border-bottom:1px solid var(--line2);font-size:.9rem}
.w li:last-child{border:0}
.dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);flex:none;box-shadow:0 0 8px rgba(0,183,255,.7)}
.nowW{grid-column:span 12;display:flex;align-items:center;gap:24px;flex-wrap:wrap;
  background:linear-gradient(115deg,rgba(0,183,255,.14),rgba(37,99,235,.08) 60%),var(--card);overflow:hidden}
.nowW::after{content:"";position:absolute;right:-40px;top:-60px;width:230px;height:230px;background:url(brain.png) center/contain no-repeat;opacity:.10;pointer-events:none}
.nowW .btn{flex:0 0 auto}
.pill{display:inline-block;font:600 .72rem 'Inter';color:var(--cyan);border:1px solid var(--line);padding:4px 11px;border-radius:99px;margin-top:10px}
.bars{display:flex;align-items:flex-end;gap:6px;height:52px;margin-top:8px}
.bars i{flex:1;background:var(--grad);border-radius:4px 4px 0 0;opacity:.85}
.bottomnav{display:none}
@media(max-width:860px){
  .side{display:none}
  .main{margin-left:0;padding:20px 16px 90px}
  .bottomnav{display:flex;position:fixed;z-index:6;bottom:0;left:0;right:0;background:var(--nav);border-top:1px solid var(--line2);padding:9px 6px calc(9px + env(safe-area-inset-bottom))}
  .bottomnav a{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;color:var(--tx3);font:600 .64rem 'Inter';text-decoration:none;cursor:pointer}
  .bottomnav a.on{color:var(--cyan)}
  .bottomnav svg.i{width:21px;height:21px}
}
body.focus .grid > .w:not(.nowW){display:none}
body.focus .top p{visibility:hidden}

.autherr{color:#ff7d90;font-size:.85rem;min-height:20px;margin-top:10px}
.signin{margin-top:16px;font-size:.85rem;color:var(--tx3)}
.signin a{color:var(--cyan);cursor:pointer;font-weight:600}