:root{
  --bg:#f4f6fc; --bg2:#eef1fb; --card:#ffffff; --ink:#151a33; --muted:#5d6584; --line:#e3e7f3;
  --side:#121735; --side2:#1d1650; --sideInk:#cfd5f5;
  --brand:#6d28d9; --brand2:#ec4899; --ok:#16a34a; --okbg:#dcfce7; --bad:#dc2626; --badbg:#fee2e2;
  --gold:#f59e0b;
  --u1:#6366f1; --u2:#0d9488; --u3:#d97706; --u4:#db2777; --u5:#7c3aed;
  --u1s:#eef0ff; --u2s:#e0f7f4; --u3s:#fff4e0; --u4s:#fde7f1; --u5s:#f1eaff;
  --shadow:0 10px 30px -12px rgba(30,30,90,.18); --r:18px;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0d1022; --bg2:#13172e; --card:#181d38; --ink:#eef0ff; --muted:#a3abd0; --line:#2a3156;
    --side:#090c1c; --side2:#150f3a;
    --okbg:#0f3a24; --badbg:#3d1414;
    --u1s:#1f2250; --u2s:#0c2e2b; --u3s:#33240a; --u4s:#3a1428; --u5s:#271b4d;
    --shadow:0 10px 30px -12px rgba(0,0,0,.6);
  }
}
:root[data-theme="dark"]{
  --bg:#0d1022; --bg2:#13172e; --card:#181d38; --ink:#eef0ff; --muted:#a3abd0; --line:#2a3156;
  --side:#090c1c; --side2:#150f3a;
  --okbg:#0f3a24; --badbg:#3d1414;
  --u1s:#1f2250; --u2s:#0c2e2b; --u3s:#33240a; --u4s:#3a1428; --u5s:#271b4d;
  --shadow:0 10px 30px -12px rgba(0,0,0,.6);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font-family:"Plus Jakarta Sans",system-ui,sans-serif;background:var(--bg);color:var(--ink);font-size:15.5px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit}
h1,h2,h3,.disp{font-family:"Baloo 2","Plus Jakarta Sans",sans-serif;line-height:1.15;margin:0}
button{font:inherit;cursor:pointer}
input,select{font:inherit;color:inherit}
.app{display:flex;min-height:100vh}

/* sidebar */
.sidebar{width:262px;flex:0 0 262px;background:linear-gradient(180deg,var(--side),var(--side2));color:var(--sideInk);position:sticky;top:0;height:100vh;overflow-y:auto;display:flex;flex-direction:column;z-index:30}
.brand{display:flex;gap:12px;align-items:center;padding:20px 18px 14px;text-decoration:none;color:#fff}
.brand-logo{width:46px;height:46px;border-radius:14px;background:conic-gradient(from 200deg,#6366f1,#ec4899,#f59e0b,#14b8a6,#6366f1);display:grid;place-items:center;font-weight:800;font-family:"Baloo 2";font-size:20px;box-shadow:0 6px 18px rgba(236,72,153,.35)}
.brand-title{font-family:"Baloo 2";font-weight:800;font-size:18px;line-height:1.05}
.brand-sub{font-size:11px;opacity:.7;margin-top:3px}
.nav{padding:6px 10px 12px;display:flex;flex-direction:column;gap:2px}
.nav-label{font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;opacity:.5;margin:14px 10px 4px}
.nav a{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:12px;text-decoration:none;font-weight:600;font-size:14px;transition:.15s}
.nav a span{width:22px;text-align:center}
.nav a:hover{background:rgba(255,255,255,.07);color:#fff}
.nav a.on{background:linear-gradient(90deg,rgba(124,58,237,.9),rgba(236,72,153,.75));color:#fff;box-shadow:0 6px 16px rgba(124,58,237,.35)}
.badge{margin-left:auto;background:#ef4444;color:#fff;border-radius:999px;font-size:11px;padding:1px 7px}
.badge:empty{display:none}
.side-foot{margin-top:auto;padding:14px 16px 20px}
.xpbox{background:rgba(255,255,255,.06);border-radius:14px;padding:12px;font-size:13px}
.xpbar{height:8px;background:rgba(255,255,255,.12);border-radius:9px;margin:7px 0 4px;overflow:hidden}
.xpbar i{display:block;height:100%;width:0;background:linear-gradient(90deg,#f59e0b,#ec4899);border-radius:9px;transition:width .5s}
.backdrop{display:none}

/* main */
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:12px;padding:12px 24px;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.iconbtn{border:1px solid var(--line);background:var(--card);color:var(--ink);width:40px;height:40px;border-radius:12px;font-size:17px;flex:0 0 auto}
.menu{display:none}
.search{flex:1;position:relative;display:flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:0 14px;max-width:620px}
.search input{border:0;outline:0;background:transparent;padding:10px 0;width:100%}
.search-res{position:absolute;left:0;right:0;top:calc(100% + 6px);background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);max-height:60vh;overflow:auto;display:none}
.search-res.show{display:block}
.search-res a{display:block;padding:10px 14px;text-decoration:none;border-bottom:1px solid var(--line);font-size:14px}
.search-res a:hover{background:var(--bg2)}
.search-res small{color:var(--muted);display:block}
.top-stats{display:flex;gap:8px;margin-left:auto}
.pill{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:13.5px;white-space:nowrap}
.view{padding:26px 28px 70px;max-width:1180px;width:100%;margin:0 auto;animation:fade .35s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* generic */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:var(--shadow)}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.muted{color:var(--muted)}
.eyebrow{font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;font-weight:800;color:var(--brand)}
.h-sec{display:flex;align-items:end;justify-content:space-between;gap:12px;margin:28px 0 14px;flex-wrap:wrap}
.h-sec h2{font-size:26px}
.btn{border:0;border-radius:12px;padding:11px 18px;font-weight:700;background:var(--brand);color:#fff;display:inline-flex;gap:8px;align-items:center;text-decoration:none;transition:transform .12s, box-shadow .12s}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 18px -6px rgba(109,40,217,.5)}
.btn.grad{background:linear-gradient(90deg,#7c3aed,#ec4899)}
.btn.ghost{background:var(--card);color:var(--ink);border:1px solid var(--line)}
.btn.sm{padding:7px 12px;font-size:13.5px;border-radius:10px}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:6px 13px;font-size:13.5px;font-weight:600;color:var(--ink)}
.chip.on{background:var(--ink);color:var(--card);border-color:var(--ink)}
.tag{display:inline-block;font-size:11.5px;font-weight:700;border-radius:999px;padding:2px 9px;background:var(--bg2);color:var(--muted)}
.hl{background:linear-gradient(transparent 55%,rgba(245,158,11,.35) 55%);font-weight:700}
.u1{--uc:var(--u1);--us:var(--u1s)} .u2{--uc:var(--u2);--us:var(--u2s)} .u3{--uc:var(--u3);--us:var(--u3s)} .u4{--uc:var(--u4);--us:var(--u4s)} .u5{--uc:var(--u5);--us:var(--u5s)}

/* hero */
.hero{position:relative;overflow:hidden;border-radius:26px;padding:34px;color:#fff;background:radial-gradient(circle at 85% 20%,rgba(236,72,153,.55),transparent 45%),radial-gradient(circle at 10% 90%,rgba(20,184,166,.45),transparent 45%),linear-gradient(135deg,#1e1b4b,#4c1d95 55%,#6d28d9);box-shadow:var(--shadow)}
.hero h1{font-size:44px;margin:8px 0 10px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,#fde68a,#f9a8d4);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{max-width:600px;opacity:.92;font-size:16.5px}
.hero .eyebrow{color:#fde68a}
.hero-art{position:absolute;right:26px;bottom:18px;width:300px;opacity:.95}
.hero .btn.ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.25)}
.stat{display:flex;flex-direction:column;gap:2px}
.stat b{font-family:"Baloo 2";font-size:32px;line-height:1}
.stat span{color:var(--muted);font-size:13px}
.stat .ic{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;font-size:19px;margin-bottom:8px}

/* modes */
.mode{display:flex;flex-direction:column;gap:6px;text-decoration:none;border-radius:20px;padding:20px;color:#fff;min-height:150px;position:relative;overflow:hidden;transition:transform .15s}
.mode:hover{transform:translateY(-3px) rotate(-.4deg)}
.mode .big{font-size:34px}
.mode h3{font-size:21px}
.mode p{margin:0;opacity:.9;font-size:13.5px}
.mode::after{content:"";position:absolute;width:140px;height:140px;border-radius:50%;background:rgba(255,255,255,.12);right:-40px;top:-40px}

/* tema cards */
.tcard{position:relative;display:flex;flex-direction:column;gap:8px;text-decoration:none;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:var(--shadow);transition:transform .15s;overflow:hidden}
.tcard:hover{transform:translateY(-3px)}
.tcard::before{content:"";position:absolute;inset:0 0 auto 0;height:5px;background:var(--uc)}
.tcard .ico{width:48px;height:48px;border-radius:15px;background:var(--us);display:grid;place-items:center;font-size:25px}
.tcard h3{font-size:19px}
.tcard p{margin:0;color:var(--muted);font-size:13.5px}
.tcard .row{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:6px}
.ring{--p:0;width:42px;height:42px;border-radius:50%;background:conic-gradient(var(--uc) calc(var(--p)*1%),var(--bg2) 0);display:grid;place-items:center;font-size:11px;font-weight:800}
.ring i{width:32px;height:32px;border-radius:50%;background:var(--card);display:grid;place-items:center;font-style:normal}

/* ruta */
.unit{border-radius:22px;padding:22px;background:var(--us);border:1px solid color-mix(in srgb,var(--uc) 25%,transparent);margin-bottom:18px}
.unit-head{display:flex;gap:14px;align-items:center;margin-bottom:14px}
.unit-num{width:52px;height:52px;border-radius:16px;background:var(--uc);color:#fff;display:grid;place-items:center;font-family:"Baloo 2";font-size:24px;font-weight:800;flex:0 0 auto}
.timeline{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}

/* lesson */
.lhead{border-radius:26px;padding:28px;color:#fff;background:linear-gradient(135deg,var(--uc),color-mix(in srgb,var(--uc) 55%,#111));position:relative;overflow:hidden;box-shadow:var(--shadow)}
.lhead .bigico{position:absolute;right:24px;top:10px;font-size:110px;opacity:.25;transform:rotate(-8deg)}
.lhead h1{font-size:36px;margin:6px 0}
.lhead .frase{background:rgba(255,255,255,.16);border-radius:14px;padding:12px 14px;margin-top:14px;max-width:760px;font-size:15.5px}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin:18px 0;position:sticky;top:66px;z-index:5;background:var(--bg);padding:8px 0}
.tab{border:1px solid var(--line);background:var(--card);border-radius:12px;padding:8px 14px;font-weight:700;font-size:14px;color:var(--ink)}
.tab.on{background:var(--uc,var(--brand));color:#fff;border-color:transparent}
.sec{display:grid;grid-template-columns:52px 1fr;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:18px;margin-bottom:14px;box-shadow:var(--shadow)}
.sec .n{width:44px;height:44px;border-radius:14px;background:var(--us);color:var(--uc);font-family:"Baloo 2";font-weight:800;font-size:22px;display:grid;place-items:center}
.sec h3{font-size:20px;margin-bottom:6px}
.sec .txt ul{margin:6px 0;padding-left:20px}
.bubble{margin-top:12px;background:var(--bg2);border-radius:14px;padding:12px 14px;display:flex;gap:10px;font-size:14.5px}
.bubble b{white-space:nowrap}
.analogia{display:flex;gap:14px;align-items:flex-start;background:linear-gradient(90deg,var(--us),transparent);border-left:5px solid var(--uc);border-radius:14px;padding:14px 16px;margin-bottom:16px}
.analogia .e{font-size:28px}
.law{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;padding:14px;border-bottom:1px dashed var(--line)}
.law:last-child{border-bottom:0}
.law .lb{background:var(--uc);color:#fff;border-radius:10px;padding:5px 10px;font-weight:800;font-size:13px;white-space:nowrap}
.qa{border:1px solid var(--line);border-radius:14px;margin-bottom:10px;overflow:hidden;background:var(--card)}
.qa summary{list-style:none;cursor:pointer;padding:13px 16px;font-weight:700;display:flex;gap:10px}
.qa summary::-webkit-details-marker{display:none}
.qa summary::before{content:"➕";font-size:12px;margin-top:3px}
.qa[open] summary::before{content:"➖"}
.qa .ans{padding:0 16px 14px 38px;color:var(--ink)}
.list-ok li,.list-bad li{margin-bottom:8px}
.tipbox{border-radius:18px;padding:18px;background:linear-gradient(135deg,#fef3c7,#fce7f3);color:#3b2a06;display:flex;gap:12px;align-items:center;font-weight:600}
:root[data-theme="dark"] .tipbox{background:linear-gradient(135deg,#3b2a06,#3d1430);color:#fde68a}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .tipbox{background:linear-gradient(135deg,#3b2a06,#3d1430);color:#fde68a}}

/* diagrams */
.model{margin-bottom:18px}
.model h3{font-size:20px;margin-bottom:12px}
.flow{display:flex;gap:0;align-items:stretch;overflow-x:auto;padding:6px 2px 10px}
.flow .st{flex:1 0 150px;background:var(--card);border:2px solid var(--uc);border-radius:16px;padding:12px;position:relative;margin-right:30px;animation:pop .4s both}
.flow .st:last-child{margin-right:0}
.flow .st:not(:last-child)::after{content:"➜";position:absolute;right:-26px;top:50%;transform:translateY(-50%);color:var(--uc);font-size:20px}
.flow .st b{display:block;font-size:14.5px;margin-bottom:4px}
.flow .st small{color:var(--muted);font-size:12.5px;display:block}
.flow .k{width:26px;height:26px;border-radius:50%;background:var(--uc);color:#fff;display:grid;place-items:center;font-weight:800;font-size:13px;margin-bottom:6px}
@keyframes pop{from{opacity:0;transform:scale(.9)}to{opacity:1;transform:none}}
.cmp{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border-radius:16px;border:1px solid var(--line);font-size:14px}
.cmp th{background:var(--uc);color:#fff;padding:10px;text-align:left}
.cmp td{padding:10px;border-top:1px solid var(--line);vertical-align:top;background:var(--card)}
.cmp td:first-child{font-weight:700;background:var(--us)}
.tablewrap{overflow-x:auto}
.pyr{display:flex;flex-direction:column;align-items:center;gap:6px}
.pyr .lv{background:var(--uc);color:#fff;border-radius:12px;padding:10px 14px;text-align:center;animation:pop .4s both}
.pyr .lv small{display:block;opacity:.88;font-size:12.5px}
.mindmap svg{width:100%;height:auto;display:block}
.cyc svg{width:100%;max-width:560px;margin:0 auto;display:block}
.nodelist{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px;margin-top:12px}
.nodelist div{background:var(--bg2);border-radius:12px;padding:10px 12px;font-size:13.5px}
.nodelist b{color:var(--uc)}

/* quiz */
.qwrap{max-width:820px;margin:0 auto}
.qtop{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.progress{height:10px;background:var(--bg2);border-radius:9px;overflow:hidden;margin-bottom:18px}
.progress i{display:block;height:100%;background:linear-gradient(90deg,#7c3aed,#ec4899);transition:width .35s}
.qcard{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:var(--shadow)}
.qcard .qt{font-size:19px;font-weight:700;margin:10px 0 16px;line-height:1.45}
.opt{display:flex;gap:12px;align-items:flex-start;width:100%;text-align:left;border:2px solid var(--line);background:var(--card);color:var(--ink);border-radius:14px;padding:13px 14px;margin-bottom:10px;font-weight:600;transition:.15s}
.opt:hover:not(:disabled){border-color:var(--brand);transform:translateX(3px)}
.opt .l{width:28px;height:28px;flex:0 0 28px;border-radius:9px;background:var(--bg2);display:grid;place-items:center;font-weight:800;font-size:13px}
.opt.ok{border-color:var(--ok);background:var(--okbg)}
.opt.ok .l{background:var(--ok);color:#fff}
.opt.bad{border-color:var(--bad);background:var(--badbg);animation:shake .35s}
.opt.bad .l{background:var(--bad);color:#fff}
.opt.sel{border-color:var(--brand);background:var(--u5s)}
@keyframes shake{25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}
.feedback{border-radius:16px;padding:16px;margin-top:6px;animation:fade .3s}
.feedback.ok{background:var(--okbg)}
.feedback.bad{background:var(--badbg)}
.feedback h4{margin:0 0 6px;font-size:17px}
.feedback .ex{margin-top:8px;background:var(--card);border-radius:12px;padding:10px 12px;font-size:14px}
.qactions{display:flex;justify-content:space-between;gap:10px;margin-top:16px;align-items:center;flex-wrap:wrap}
.star{border:1px solid var(--line);background:var(--card);border-radius:10px;padding:6px 10px;color:var(--ink)}
.star.on{background:#fef3c7;border-color:#f59e0b;color:#92400e}
.result{text-align:center}
.result .score{font-family:"Baloo 2";font-size:64px;line-height:1}
.donut{width:180px;height:180px;margin:0 auto}

/* banco */
.bq{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;margin-bottom:12px}
.bq .meta{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px;align-items:center}
.bq .opts{margin:8px 0 0;padding-left:0;list-style:none}
.bq .opts li{padding:6px 10px;border-radius:10px;margin-bottom:4px;background:var(--bg2);font-size:14px}
.bq.show .opts li.c{background:var(--okbg);font-weight:700}
.bq .sol{display:none;margin-top:10px;font-size:14px;border-left:4px solid var(--ok);padding:6px 12px}
.bq.show .sol{display:block}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.filters select,.filters input,.field{border:1px solid var(--line);background:var(--card);border-radius:12px;padding:9px 12px}

/* flashcards */
.fc-stage{perspective:1200px;max-width:640px;margin:0 auto}
.fc{position:relative;height:300px;transform-style:preserve-3d;transition:transform .6s cubic-bezier(.3,1.4,.5,1);cursor:pointer}
.fc.flip{transform:rotateY(180deg)}
.fc .face{position:absolute;inset:0;backface-visibility:hidden;border-radius:24px;padding:28px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;box-shadow:var(--shadow);font-size:19px;font-weight:700}
.fc .front{background:linear-gradient(135deg,var(--uc),color-mix(in srgb,var(--uc) 50%,#000));color:#fff}
.fc .back{background:var(--card);border:2px solid var(--uc);transform:rotateY(180deg);font-weight:600;font-size:17px}
.fc small{position:absolute;bottom:14px;font-size:12px;opacity:.75;font-weight:600}

/* games */
.game-item{font-size:22px;font-weight:800;text-align:center;padding:30px 20px;border-radius:20px;background:var(--bg2);margin:10px 0 18px;animation:pop .35s}
.gbtns{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}
.gbtn{border:0;border-radius:16px;padding:16px;font-weight:800;color:#fff;font-size:16px;transition:transform .1s}
.gbtn:active{transform:scale(.97)}
.order-list{display:flex;flex-direction:column;gap:8px}
.order-item{display:flex;align-items:center;gap:10px;background:var(--card);border:2px solid var(--line);border-radius:14px;padding:11px 14px;font-weight:600}
.order-item .mv{margin-left:auto;display:flex;gap:4px}
.order-item.ok{border-color:var(--ok);background:var(--okbg)}
.order-item.bad{border-color:var(--bad);background:var(--badbg)}
.timer{font-family:"Baloo 2";font-size:28px;font-weight:800}

/* calculators */
.calc label{display:block;font-weight:700;font-size:13.5px;margin:10px 0 4px}
.calc input,.calc select{width:100%;border:1px solid var(--line);background:var(--bg);border-radius:12px;padding:10px 12px}
.calc .out{margin-top:14px;background:var(--bg2);border-radius:14px;padding:14px}
.calc .out .big{font-family:"Baloo 2";font-size:30px;font-weight:800;color:var(--brand)}
.rowx{display:grid;grid-template-columns:1fr 1fr auto;gap:8px;margin-bottom:8px}
.bars .bar{display:grid;grid-template-columns:110px 1fr 110px;gap:8px;align-items:center;margin:6px 0;font-size:13.5px}
.bars .bar i{display:block;height:16px;border-radius:8px;background:linear-gradient(90deg,#7c3aed,#ec4899);transition:width .5s}

/* glosario */
.gl{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.gl .card{padding:16px}
.gl h4{margin:0 0 4px;font-size:16px}
.az{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:14px}
.az button{border:1px solid var(--line);background:var(--card);border-radius:8px;width:32px;height:32px;font-weight:700;color:var(--ink)}
.az button.on{background:var(--brand);color:#fff}

/* toast & confetti */
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(120px);background:#111827;color:#fff;padding:12px 18px;border-radius:14px;font-weight:700;z-index:100;transition:transform .3s;box-shadow:var(--shadow)}
.toast.show{transform:translateX(-50%) translateY(0)}
#confetti{position:fixed;inset:0;pointer-events:none;z-index:99;width:100%;height:100%}
.empty{text-align:center;padding:50px 20px;color:var(--muted)}
.empty .e{font-size:54px}
.kpi{display:flex;gap:12px;align-items:center}
.chart svg{width:100%;height:auto;display:block}
.notice{font-size:12.5px;color:var(--muted);margin-top:8px}

/* responsive */
@media (max-width:1050px){.g4{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-art{display:none}}
@media (max-width:820px){
  .sidebar{position:fixed;left:0;top:0;transform:translateX(-100%);transition:transform .25s}
  .sidebar.open{transform:none}
  .backdrop.show{display:block;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:25}
  .menu{display:grid;place-items:center}
  .topbar{padding:10px 16px}
  .top-stats{display:none}
  .view{padding:18px 16px 60px}
  .g2,.g3,.g4{grid-template-columns:minmax(0,1fr)}
  .hero{padding:24px}
  .hero h1{font-size:32px}
  .lhead h1{font-size:28px}
  .lhead .bigico{font-size:70px}
  .sec{grid-template-columns:1fr}
  .tabs{top:60px}
  .flow{flex-direction:column}
  .flow .st{margin-right:0;margin-bottom:28px;flex:none}
  .flow .st:not(:last-child)::after{content:"⬇";right:50%;top:auto;bottom:-27px;transform:translateX(50%)}
  .bars .bar{grid-template-columns:80px 1fr 80px}
  .rowx{grid-template-columns:1fr 1fr}
}