/* Chartos — design system. Light, editorial, hairline borders, one accent. */
:root{
  --paper:#F7F5F1; --paper-2:#EFEBE3;
  --surface:#FFFFFF; --surface-2:#FBF9F5;
  --ink:#141C2E; --ink-2:#3B4658; --muted:#6B7688; --faint:#98A1B0;
  --line:rgba(20,28,46,.11); --line-2:rgba(20,28,46,.18); --line-3:rgba(20,28,46,.3);
  --brand:#2F4BD6; --brand-2:#5B78F0; --brand-dk:#2439A8; --brand-soft:rgba(47,75,214,.09);
  --accent:#0E7A57; --accent-2:#149469; --accent-soft:rgba(14,122,87,.10);
  --down:#C0483C; --down-soft:rgba(192,72,60,.10);
  --blue:#2B4BC7; --sand:#B5822C; --violet:#6D4AC7; --teal:#12786E; --plum:#9A3D77; --slate:#3E5C8A;
  --cream:#FBF3E4; --sky:#EAF0FF; --mint:#E6F4EE;
  --r-sm:8px; --r:12px; --r-lg:16px; --r-xl:24px; --r-2xl:32px;
  --sh-1:0 1px 2px rgba(20,28,46,.06);
  --sh-2:0 1px 2px rgba(20,28,46,.05),0 12px 26px -18px rgba(20,28,46,.4);
  --sh-3:0 2px 4px rgba(20,28,46,.04),0 30px 60px -30px rgba(20,28,46,.5);
  --sans:'Inter','SF Pro Text',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --sidebar:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);
  font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden;
  font-feature-settings:'cv05' 1,'ss01' 1;
}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.032em;line-height:1.08}
h1{font-size:clamp(40px,6.1vw,74px);letter-spacing:-.045em}
h2{font-size:clamp(26px,3.6vw,44px);letter-spacing:-.038em}
h3{font-size:18px;letter-spacing:-.022em}
p{margin:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input{font:inherit}
::selection{background:rgba(47,75,214,.16)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.ic{width:1em;height:1em;flex:none;display:block}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.muted{color:var(--muted)}.faint{color:var(--faint)}
.hide{display:none!important}

/* ---------- atoms ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  padding:11px 18px;border-radius:10px;font-weight:520;font-size:14.5px;letter-spacing:-.01em;
  border:1px solid transparent;white-space:nowrap;
  transition:background .18s,border-color .18s,color .18s,transform .18s,box-shadow .18s;
}
.btn .ic{width:15px;height:15px}
.btn:active{transform:translateY(1px)}
.btn-primary{background:linear-gradient(180deg,var(--brand-2),var(--brand));color:#fff;box-shadow:0 1px 2px rgba(20,28,46,.14),0 10px 22px -14px rgba(47,75,214,.9)}
.btn-primary:hover{background:linear-gradient(180deg,var(--brand),var(--brand-dk));box-shadow:0 2px 4px rgba(20,28,46,.14),0 14px 26px -14px rgba(47,75,214,1)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#0D1424}
.btn-ghost{border-color:var(--line-2);background:var(--surface);color:var(--ink);box-shadow:var(--sh-1)}
.btn-ghost:hover{border-color:var(--line-3);background:var(--surface-2)}
.btn-quiet{color:var(--muted);padding:10px 12px}
.btn-quiet:hover{color:var(--ink)}
.btn-lg{padding:14px 24px;font-size:15.5px;border-radius:11px}
.btn-block{width:100%}
.btn-invert{background:#fff;color:var(--brand)}
.btn-invert:hover{background:#f2f1ee}
.btn[disabled]{opacity:.4;pointer-events:none}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1)}
.pad{padding:22px}
.chip{
  display:inline-flex;align-items:center;gap:7px;padding:5px 11px;border-radius:99px;
  border:1px solid var(--line);background:var(--surface);font-size:12.5px;color:var(--muted);
  box-shadow:var(--sh-1);
}
.chip .ic{width:13px;height:13px;color:var(--ink)}
.chip .pip{width:6px;height:6px;border-radius:50%;background:var(--down)}
.tag{font-size:11px;font-weight:600;letter-spacing:.13em;text-transform:uppercase;color:var(--faint)}
.disclaimer{font-size:11.5px;color:var(--faint);line-height:1.55}
.up{color:var(--accent)}.dn{color:var(--down)}
.ic-box{--tint:var(--ink);--tint-bg:var(--surface-2);--tint-br:var(--line)}
.t1{--tint:#2F4BD6;--tint-bg:rgba(47,75,214,.10);--tint-br:rgba(47,75,214,.2)}
.t2{--tint:#0E7A57;--tint-bg:rgba(14,122,87,.11);--tint-br:rgba(14,122,87,.2)}
.t3{--tint:#B5822C;--tint-bg:rgba(181,130,44,.13);--tint-br:rgba(181,130,44,.24)}
.t4{--tint:#6D4AC7;--tint-bg:rgba(109,74,199,.11);--tint-br:rgba(109,74,199,.2)}
.t5{--tint:#12786E;--tint-bg:rgba(18,120,110,.11);--tint-br:rgba(18,120,110,.2)}
.t6{--tint:#C0483C;--tint-bg:rgba(192,72,60,.10);--tint-br:rgba(192,72,60,.2)}
.t7{--tint:#9A3D77;--tint-bg:rgba(154,61,119,.10);--tint-br:rgba(154,61,119,.2)}
.t8{--tint:#3E5C8A;--tint-bg:rgba(62,92,138,.12);--tint-br:rgba(62,92,138,.22)}

/* ---------- chart component ---------- */
.cachart{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.cachart-head{display:flex;align-items:center;gap:10px;padding:10px 13px;border-bottom:1px solid var(--line);flex-wrap:wrap;background:var(--surface-2)}
.cachart-sym{display:flex;align-items:center;gap:8px;font-size:12.5px;font-weight:560;letter-spacing:-.01em}
.cachart-sym .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.cachart-tf{font-family:var(--mono);font-size:10.5px;color:var(--muted);border:1px solid var(--line);border-radius:5px;padding:1px 5px;background:var(--surface)}
.cachart-legend{display:flex;gap:10px;margin-left:auto}
.cachart-legend .lg{font-family:var(--mono);font-size:10.5px;color:var(--c);display:flex;align-items:center;gap:5px}
.cachart-legend .lg::before{content:'';width:11px;height:2px;background:var(--c);border-radius:2px}
.cachart-toolbar{display:flex;align-items:center;gap:5px;width:100%;order:3;padding-top:9px;border-top:1px solid var(--line)}
.cachart-pill{font-family:var(--mono);font-size:11px;padding:3px 9px;border-radius:6px;border:1px solid transparent;color:var(--muted)}
.cachart-pill:hover{border-color:var(--line)}
.cachart-pill.is-on{background:var(--brand-soft);border-color:rgba(47,75,214,.28);color:var(--brand)}
.cachart-hint{margin-left:auto;font-size:10.5px;color:var(--faint)}
.cachart-canvas-wrap{position:relative;background:var(--surface)}
.cachart canvas{display:block;cursor:crosshair;touch-action:pan-y}
.cachart-tip{
  position:absolute;width:154px;background:#fff;border:1px solid var(--line-2);
  border-radius:10px;padding:9px 10px;pointer-events:none;z-index:4;box-shadow:var(--sh-2);
}
.tt-t{font-size:10.5px;color:var(--muted);margin-bottom:5px}
.tt-g{display:grid;grid-template-columns:auto 1fr auto 1fr;gap:2px 7px;font-family:var(--mono);font-size:11px}
.tt-g span{color:var(--faint)}
.tt-g b{font-weight:500;text-align:right}
.tt-f{margin-top:6px;font-family:var(--mono);font-size:10.5px}
.tt-f.up{color:var(--accent)}.tt-f.dn{color:var(--down)}

/* ---------- landing ---------- */
.wrap{max-width:1160px;margin:0 auto;padding:0 28px;position:relative}
.nav{position:sticky;top:0;z-index:50;background:rgba(247,245,241,.84);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:14px;height:66px}
.logo{display:flex;align-items:center;gap:9px;font-weight:600;letter-spacing:-.03em;font-size:17px}
.logo-mark{width:24px;height:24px;flex:none;display:block}
.nav-links{display:flex;gap:24px;margin-left:34px;font-size:14px;color:var(--muted)}
.nav-links a:hover{color:var(--ink)}
.nav-cta{margin-left:auto;display:flex;gap:8px;align-items:center}
section.sec{padding:104px 0}
section.sec.tinted{background:linear-gradient(180deg,rgba(234,240,255,.55),rgba(251,243,228,.45));border-block:1px solid var(--line)}
.sec-head h2 em{font-style:normal;color:var(--brand)}
.sec-head{max-width:640px;margin:0 auto 48px;text-align:center}
.sec-head .tag{display:block;margin-bottom:14px}
.sec-head p{color:var(--muted);margin-top:16px;font-size:17px;line-height:1.55}
.hero{padding:34px 0 0;text-align:center}
.hero-stage{
  border-radius:36px;padding:74px 30px 0;overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-2);
  background:
    radial-gradient(900px 420px at 50% -8%,rgba(91,120,240,.20),transparent 62%),
    radial-gradient(720px 420px at 88% 16%,rgba(14,122,87,.11),transparent 58%),
    radial-gradient(620px 360px at 8% 30%,rgba(181,130,44,.10),transparent 62%),
    linear-gradient(180deg,#FFFFFF,#FCFAF6);
}
.hero .chip{margin-bottom:24px;background:rgba(255,255,255,.86)}
.hero h1 .l2{color:var(--muted);display:block}
.hero-sub{max-width:600px;margin:24px auto 0;color:var(--muted);font-size:17.5px;line-height:1.55}
.hero-cta{display:flex;gap:10px;justify-content:center;margin-top:30px;flex-wrap:wrap}
.hero-note{margin-top:18px;font-size:12.5px;color:var(--faint)}
.hero-frame{
  margin:52px auto -14px;max-width:960px;background:var(--surface);border:1px solid var(--line);
  border-top-left-radius:22px;border-top-right-radius:22px;box-shadow:var(--sh-3);padding:8px 8px 0;
}
.frame-bar{display:flex;align-items:center;gap:6px;padding:8px 10px 12px}
.frame-bar .d{width:9px;height:9px;border-radius:50%;background:var(--line-2)}
.frame-bar .u{
  margin:0 auto;font-family:var(--mono);font-size:10.5px;color:var(--faint);
  border:1px solid var(--line);border-radius:99px;padding:3px 14px;background:var(--surface-2);
}
.frame-bar .d:first-child{background:#E4A2A2}
.frame-bar .d:nth-child(2){background:#E6C89A}
.frame-bar .d:nth-child(3){background:#A9CFB4}
.hero-stats{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.grid{display:grid;gap:16px}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.step{padding:28px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg)}
.step .n{font-family:var(--mono);font-size:11.5px;color:var(--faint);margin-bottom:22px}
.step h3{margin-bottom:9px}
.step p{color:var(--muted);font-size:14.5px}
.path-card{
  padding:22px;display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  transition:border-color .2s,box-shadow .2s,transform .2s;
}
.path-card:hover{border-color:var(--line-2);box-shadow:var(--sh-2);transform:translateY(-2px)}
.path-card .ic-box{width:36px;height:36px;border-radius:10px;border:1px solid var(--tint-br);display:grid;place-items:center;margin-bottom:16px;color:var(--tint);background:var(--tint-bg)}
.path-card .ic-box .ic{width:18px;height:18px}
.path-card h3{font-size:15.5px;margin-bottom:6px}
.path-card p{color:var(--muted);font-size:13.5px;line-height:1.5}
.path-card .meta{margin-top:16px;font-size:11px;color:var(--faint);font-family:var(--mono);letter-spacing:.02em}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
ul.feature-list{padding:0;margin:26px 0 0;display:flex;flex-direction:column;gap:13px}
.feature-list li{display:flex;gap:11px;color:var(--muted);font-size:15px;list-style:none;line-height:1.5}
.feature-list li b{color:var(--ink);font-weight:560}
.feature-list .tick{color:var(--accent);width:15px;height:15px;margin-top:4px;flex:none}
.lb-row{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:11px}
.lb-row+.lb-row{margin-top:2px}
.lb-row .rk{font-family:var(--mono);font-size:12px;color:var(--faint);width:24px}
.lb-row .av{
  width:30px;height:30px;border-radius:50%;display:grid;place-items:center;flex:none;
  background:var(--surface-2);border:1px solid var(--line);font-size:11px;font-weight:600;letter-spacing:.02em;color:var(--ink-2);
}
.lb-row .nm{font-weight:520;font-size:14.5px}
.lb-row .cc{font-family:var(--mono);font-size:10.5px;color:var(--faint);margin-left:6px}
.lb-row .xp{margin-left:auto;font-family:var(--mono);font-size:12.5px;color:var(--muted)}
.lb-row.me{background:var(--brand-soft);box-shadow:inset 0 0 0 1px rgba(47,75,214,.22)}
.lb-row.me .nm,.lb-row.me .xp{color:var(--brand)}
.lb-row.me .av{background:linear-gradient(160deg,var(--brand-2),var(--brand));color:#fff;border-color:transparent}
.band{
  background:radial-gradient(700px 320px at 50% 0%,rgba(91,120,240,.36),transparent 70%),
             linear-gradient(180deg,#1B2540,#111827);
  color:#fff;border-radius:var(--r-2xl);padding:84px 40px;text-align:center;box-shadow:var(--sh-3);
}
.band h2{color:#fff}
.band p{color:rgba(255,255,255,.62)}
.band .chip{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);color:rgba(255,255,255,.8)}
.foot{border-top:1px solid var(--line);padding:40px 0 56px;color:var(--faint);font-size:13px}
.foot-in{display:flex;gap:24px;align-items:flex-start;flex-wrap:wrap;justify-content:space-between}

/* ---------- app shell ---------- */
.app{display:none;min-height:100vh}
.app.on{display:block}
body.in-app .site{display:none}
body.in-app{background:var(--paper)}
.side{
  position:fixed;inset:0 auto 0 0;width:var(--sidebar);z-index:40;
  background:var(--surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:20px 14px;
}
.side .logo{margin:2px 8px 26px}
.nav-item{
  display:flex;align-items:center;gap:11px;padding:9px 11px;border-radius:9px;
  color:var(--muted);font-size:14px;font-weight:500;transition:background .15s,color .15s;margin-bottom:1px;
}
.nav-item .ic{width:17px;height:17px}
.nav-item:hover{background:var(--surface-2);color:var(--ink)}
.nav-item.on{background:var(--brand-soft);color:var(--brand);font-weight:560}
.nav-item .badge{margin-left:auto;width:6px;height:6px;border-radius:50%;background:var(--down)}
.side-foot{margin-top:auto;padding:14px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line)}
.side-foot .lv{display:flex;align-items:baseline;justify-content:space-between}
.side-foot .lvn{font-weight:600;font-size:14px;letter-spacing:-.02em}
.side-foot .lv .mono{font-size:12px;color:var(--muted)}
.bar{height:5px;border-radius:99px;background:var(--paper-2);overflow:hidden;margin:10px 0 8px}
.bar>i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--brand),var(--accent-2));transition:width .7s cubic-bezier(.2,.9,.3,1)}
.side-foot .st{display:flex;align-items:center;font-size:11.5px;color:var(--faint);font-family:var(--mono)}
.side-foot .st .fl{display:flex;align-items:center;gap:4px;margin-left:auto;color:var(--ink-2)}
.side-foot .st .ic{width:12px;height:12px}
.main{margin-left:var(--sidebar);padding:34px 40px 96px;max-width:1240px}
.topbar{display:flex;align-items:flex-end;gap:18px;flex-wrap:wrap;margin-bottom:28px}
.topbar h2{font-size:30px}
.topbar .sub{color:var(--muted);font-size:14.5px;margin-top:7px}
.stat-row{display:flex;gap:6px;margin-left:auto;flex-wrap:wrap;align-items:center}
.stat{
  display:flex;align-items:center;gap:7px;padding:8px 13px;border-radius:9px;
  border:1px solid var(--line);background:var(--surface);font-size:13px;color:var(--muted);
}
.stat .ic{width:14px;height:14px;color:var(--ink)}
.stat b{font-weight:560;color:var(--ink);font-variant-numeric:tabular-nums}
.stat.fire .ic{color:var(--down)}
.stat.xp .ic{color:var(--accent)}
.mobile-nav{display:none}
.mtop{display:none}

/* ---------- dashboard ---------- */
.hero-panel{padding:26px;display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:center;margin-bottom:16px}
.lvl-big{display:flex;align-items:center;gap:15px;margin:18px 0 8px}
.lvl-ring{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;flex:none;background:conic-gradient(from -90deg,var(--brand),var(--accent-2) calc(var(--p)*1%),var(--paper-2) 0)}
.lvl-ring i{width:48px;height:48px;border-radius:50%;background:var(--surface);display:grid;place-items:center;font-style:normal;font-weight:600;font-size:17px}
.mini-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:24px 0 0}
.mini{padding:16px;border-radius:12px;border:1px solid var(--line);background:var(--surface-2)}
.mini .v{font-size:22px;font-weight:600;letter-spacing:-.03em}
.mini .k{font-size:11px;color:var(--faint);margin-top:4px;text-transform:uppercase;letter-spacing:.08em}
.next-card{display:flex;align-items:center;gap:16px;padding:18px 20px;transition:border-color .2s,box-shadow .2s}
a.next-card:hover{border-color:var(--line-2);box-shadow:var(--sh-2)}
.next-card .ic-box{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(160deg,var(--brand-2),var(--brand));color:#fff;flex:none;box-shadow:0 8px 18px -10px rgba(47,75,214,.9)}
.next-card .ic-box .ic{width:16px;height:16px}
.sec-title{display:flex;align-items:baseline;gap:12px;margin:38px 0 14px}
.sec-title h3{font-size:15px}
.sec-title a{margin-left:auto;font-size:13px;color:var(--muted)}
.sec-title a:hover{color:var(--ink)}

/* ---------- learning path ---------- */
.path-wrap{max-width:700px}
.lvl-head{display:flex;align-items:center;gap:14px;margin:40px 0 18px}
.lvl-head .n{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;color:var(--faint);text-transform:uppercase}
.lvl-head h3{font-size:19px}
.lvl-head .ln{flex:1;height:1px;background:var(--line)}
.lvl-head .pc{font-family:var(--mono);font-size:11.5px;color:var(--faint)}
.node{display:flex;gap:16px;align-items:stretch}
.node-rail{display:flex;flex-direction:column;align-items:center;width:36px;flex:none}
.node-dot{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;flex:none;
  border:1px solid var(--line-2);background:var(--surface);color:var(--faint);
}
.node-dot .ic{width:15px;height:15px}
.node-dot .pip{width:7px;height:7px;border-radius:50%;background:currentColor}
.node-line{flex:1;width:1px;background:var(--line);min-height:12px}
.node.done .node-dot{background:var(--accent-soft);border-color:rgba(15,107,79,.3);color:var(--accent)}
.node.cur .node-dot{background:linear-gradient(160deg,var(--brand-2),var(--brand));border-color:transparent;color:#fff;box-shadow:0 0 0 4px rgba(47,75,214,.14)}
.node.lock .node-dot{background:var(--paper-2);border-color:transparent;color:var(--faint)}
.node-body{flex:1;padding-bottom:10px}
.node-card{
  display:flex;align-items:center;gap:14px;padding:15px 18px;border-radius:13px;border:1px solid var(--line);
  background:var(--surface);width:100%;text-align:left;transition:border-color .18s,box-shadow .18s,transform .18s;
}
a .node-card:hover{border-color:var(--line-2);box-shadow:var(--sh-2);transform:translateX(2px)}
.node.cur .node-card{border-color:var(--line-2);box-shadow:var(--sh-2)}
.node.lock .node-card{background:transparent;box-shadow:none;border-style:dashed;opacity:.62}
.node-card .tt{font-weight:560;font-size:14.5px;letter-spacing:-.015em}
.node-card .ds{color:var(--muted);font-size:13px;margin-top:3px}
.node-card .rt{margin-left:auto;text-align:right;flex:none}
.node-card .rt .xp{font-family:var(--mono);font-size:11.5px;color:var(--ink-2)}
.node-card .rt .mn{font-size:10.5px;color:var(--faint);margin-top:2px}

/* ---------- lesson / quiz ---------- */
.lesson{max-width:760px}
.lesson-top{display:flex;align-items:center;gap:14px;margin-bottom:22px}
.lesson-top .x{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;border:1px solid var(--line);color:var(--muted);flex:none;background:var(--surface)}
.lesson-top .x:hover{color:var(--ink);border-color:var(--line-2)}
.lesson-top .x .ic{width:14px;height:14px}
.pbar{flex:1;height:5px;border-radius:99px;background:var(--paper-2);overflow:hidden}
.pbar>i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--accent-2));border-radius:99px;transition:width .4s cubic-bezier(.2,.9,.3,1)}
.slide{animation:slide-in .32s cubic-bezier(.2,.9,.3,1) both}
@keyframes slide-in{from{opacity:0;transform:translateY(9px)}}
.card-txt h3{margin-bottom:11px;font-size:21px}
.card-txt p{color:var(--ink-2);font-size:16px;line-height:1.62}
.card-list{list-style:none;padding:0;margin:16px 0 0;display:flex;flex-direction:column;gap:11px}
.card-list li{display:flex;gap:11px;color:var(--ink-2);font-size:15px;line-height:1.55}
.card-list li::before{content:'';width:5px;height:5px;border-radius:50%;background:var(--accent);margin-top:9px;flex:none}
.note{display:flex;gap:12px;padding:15px 17px;border-radius:12px;margin-top:18px;background:var(--sky);border:1px solid var(--line);font-size:14.5px;color:var(--ink-2);line-height:1.55}
.note::before{content:'';width:2px;border-radius:2px;background:var(--brand);flex:none;align-self:stretch}
.cap{font-size:12.5px;color:var(--faint);margin-top:12px;text-align:center}
.q-head{font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--faint);margin-bottom:14px;font-weight:600}
.q-title{font-size:20px;font-weight:560;line-height:1.35;margin-bottom:20px;letter-spacing:-.024em}
.opts{display:flex;flex-direction:column;gap:9px}
.opt{
  display:flex;align-items:center;gap:13px;padding:15px 17px;border-radius:12px;text-align:left;
  border:1px solid var(--line);background:var(--surface);font-size:15px;width:100%;color:var(--ink-2);
  transition:border-color .16s,background .16s,transform .16s,box-shadow .16s;
}
.opt:hover:not(.locked){border-color:var(--line-3);box-shadow:var(--sh-1);transform:translateX(2px);color:var(--ink)}
.opt .k{width:24px;height:24px;border-radius:7px;display:grid;place-items:center;flex:none;border:1px solid var(--line);font-family:var(--mono);font-size:11px;color:var(--muted)}
.opt.sel{border-color:var(--brand);background:var(--brand-soft)}
.opt.right{border-color:rgba(15,107,79,.45);background:var(--accent-soft);color:var(--ink)}
.opt.right .k{background:var(--accent);color:#fff;border-color:transparent}
.opt.wrong{border-color:rgba(176,70,60,.4);background:var(--down-soft)}
.opt.wrong .k{background:var(--down);color:#fff;border-color:transparent}
.opt.locked{cursor:default}
.verdict{margin-top:18px;padding:17px 19px;border-radius:13px;border:1px solid var(--line);background:var(--surface-2);animation:slide-in .28s both}
.verdict.ok{background:var(--accent-soft);border-color:rgba(15,107,79,.24)}
.verdict.no{background:var(--down-soft);border-color:rgba(176,70,60,.22)}
.verdict .vt{font-weight:600;font-size:15px;display:flex;align-items:center;gap:8px;margin-bottom:7px;letter-spacing:-.02em}
.verdict .vt .ic{width:16px;height:16px}
.verdict.ok .vt{color:var(--accent)}
.verdict.no .vt{color:var(--down)}
.verdict p{color:var(--ink-2);font-size:14.5px;line-height:1.6}
.verdict .xp-pop{margin-left:auto;font-family:var(--mono);font-size:12.5px;color:inherit;opacity:.75}
.lesson-foot{display:flex;align-items:center;gap:12px;margin-top:24px}
.lesson-foot .sp{margin-left:auto}
.done-wrap{text-align:center;padding:52px 26px;animation:slide-in .35s both}
.done-wrap .badge-ic{width:60px;height:60px;border-radius:50%;display:grid;place-items:center;margin:0 auto 20px;background:linear-gradient(160deg,var(--brand-2),var(--brand));color:#fff;box-shadow:0 14px 30px -16px rgba(47,75,214,.95);animation:pop .45s cubic-bezier(.2,1.35,.4,1) both}
.done-wrap .badge-ic .ic{width:24px;height:24px}
@keyframes pop{from{transform:scale(.5);opacity:0}}
.xp-total{font-family:var(--mono);font-size:30px;color:var(--brand);margin:18px 0 4px;font-weight:500;letter-spacing:-.03em}

/* ---------- challenge ---------- */
.chal-head{display:flex;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.scene{padding:15px 18px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line);font-size:15px;margin-bottom:18px;color:var(--ink-2);line-height:1.55}
.bhs{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.bhs .opt{align-items:flex-start;flex-direction:column;gap:10px;padding:18px 16px;font-weight:520;font-size:14.5px;line-height:1.4}
.bhs .sig{width:9px;height:9px;border-radius:50%;background:var(--faint)}
.bhs .opt:nth-child(1) .sig{background:var(--accent)}
.bhs .opt:nth-child(2) .sig{background:var(--sand)}
.bhs .opt:nth-child(3) .sig{background:var(--down)}
.diff{font-family:var(--mono);font-size:10.5px;padding:3px 9px;border-radius:6px;border:1px solid var(--line);color:var(--muted);text-transform:uppercase;letter-spacing:.06em}

/* ---------- leaderboard / achievements / profile ---------- */
.tabs{display:inline-flex;gap:3px;padding:3px;border-radius:10px;background:var(--paper-2);margin-bottom:18px;flex-wrap:wrap}
.tab{padding:7px 15px;border-radius:8px;font-size:13.5px;color:var(--muted);font-weight:520}
.tab.on{background:var(--surface);color:var(--brand);box-shadow:var(--sh-1)}
.ach{padding:22px;text-align:center;transition:border-color .2s,box-shadow .2s}
.ach:hover{border-color:var(--line-2);box-shadow:var(--sh-2)}
.ach .ic-box{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;margin:0 auto 14px;background:var(--paper-2);color:var(--faint);border:1px solid transparent}
.ach .ic-box .ic{width:21px;height:21px}
.ach.got .ic-box{background:var(--tint-bg);color:var(--tint);border-color:var(--tint-br)}
.ach h4{font-size:14px;margin-bottom:5px;font-weight:560;letter-spacing:-.02em}
.ach p{font-size:12.5px;color:var(--muted);line-height:1.45}
.ach .st{margin-top:12px;font-family:var(--mono);font-size:10px;color:var(--faint);letter-spacing:.06em}
.ach.got .st{color:var(--accent)}
.profile-head{display:flex;gap:20px;align-items:center;padding:26px;flex-wrap:wrap}
.avatar{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;font-size:20px;font-weight:600;letter-spacing:-.02em;flex:none;background:linear-gradient(160deg,var(--brand-2),var(--brand));color:#fff;box-shadow:0 12px 26px -16px rgba(47,75,214,.9)}
.share-card{
  border-radius:16px;padding:26px;color:#fff;position:relative;overflow:hidden;
  background:radial-gradient(420px 220px at 88% 6%,rgba(91,120,240,.5),transparent 70%),
             linear-gradient(150deg,#1D2748,#141C2E 60%,#16223B);
}
.share-card .tag{color:rgba(255,255,255,.5)}
.share-card .muted{color:rgba(255,255,255,.6)}
.share-card .chip{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.15);color:rgba(255,255,255,.82);box-shadow:none}
.share-card .chip .ic{color:#fff}
.share-big{font-size:clamp(32px,3.2vw,46px);font-weight:600;letter-spacing:-.045em;line-height:1.02;margin:14px 0 6px;white-space:nowrap}
.name-in{background:none;border:0;color:var(--ink);font-size:22px;font-weight:600;letter-spacing:-.03em;width:220px;max-width:52vw;padding:0;border-bottom:1px solid transparent}
.name-in:hover,.name-in:focus{border-bottom-color:var(--line-2);outline:none}

/* ---------- practice ---------- */
.pick{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.pick a{padding:20px 18px;border-radius:14px;border:1px solid var(--line);background:var(--surface);display:block;transition:border-color .2s,box-shadow .2s,transform .2s}
.pick a:hover{border-color:var(--line-2);box-shadow:var(--sh-2);transform:translateY(-2px)}
.pick .ic-box{width:34px;height:34px;border-radius:10px;border:1px solid var(--tint-br);display:grid;place-items:center;margin-bottom:14px;background:var(--tint-bg);color:var(--tint)}
.pick .ic-box .ic{width:17px;height:17px}
.pick .nm{font-weight:560;font-size:14.5px;letter-spacing:-.015em}
.pick .ct{font-size:11px;color:var(--faint);font-family:var(--mono);margin-top:4px}

/* ---------- toast / modal ---------- */
.toasts{position:fixed;right:22px;bottom:22px;z-index:200;display:flex;flex-direction:column;gap:8px;align-items:flex-end}
.toast{
  display:flex;align-items:center;gap:10px;padding:12px 16px;border-radius:11px;font-size:13.5px;font-weight:500;
  background:linear-gradient(180deg,#1B2540,#141C2E);color:#fff;box-shadow:var(--sh-3);animation:toast-in .35s cubic-bezier(.2,1.2,.4,1) both;
}
.toast .ic{width:15px;height:15px;opacity:.9}
.toast .v{font-family:var(--mono);color:#fff;opacity:.75}
@keyframes toast-in{from{opacity:0;transform:translateY(10px) scale(.97)}}
.toast.out{animation:toast-out .28s forwards}
@keyframes toast-out{to{opacity:0;transform:translateY(6px) scale(.98)}}
.modal{position:fixed;inset:0;z-index:300;display:grid;place-items:center;padding:22px;background:rgba(17,19,21,.42);backdrop-filter:blur(4px);animation:slide-in .22s both}
.modal-in{max-width:400px;width:100%;text-align:center;padding:38px 30px;animation:pop .4s cubic-bezier(.2,1.28,.4,1) both;box-shadow:var(--sh-3)}
.modal-in .badge-ic{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;margin:0 auto 18px;background:linear-gradient(160deg,#E9B44C,#C98A22);color:#fff;box-shadow:0 14px 30px -16px rgba(201,138,34,.9)}
.modal-in .badge-ic .ic{width:24px;height:24px}

/* ---------- responsive ---------- */
@media(max-width:1080px){
  .g4{grid-template-columns:repeat(2,1fr)}
  .hero-panel{grid-template-columns:1fr}
  .pick{grid-template-columns:repeat(2,1fr)}
  .split{gap:34px}
}
@media(max-width:920px){
  .g3{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .nav-links{display:none}
  .mini-grid{grid-template-columns:repeat(2,1fr)}
  .main{padding:28px 24px 96px}
}
@media(max-width:760px){
  section.sec{padding:64px 0}
  .wrap{padding:0 18px}
  .hero{padding:52px 0 0}
  .hero-frame{margin-top:38px;border-radius:20px;padding:7px}
  .band{padding:56px 22px;border-radius:20px}
  .side{display:none}
  .main{margin-left:0;padding:16px 16px 108px}
  .mtop{display:flex;align-items:center;gap:10px;position:sticky;top:0;z-index:30;margin:-16px -16px 16px;padding:11px 16px;background:rgba(244,243,240,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
  .mtop .stat{padding:6px 10px;font-size:12px;border:0;background:none}
  .mobile-nav{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:60;padding:7px 6px calc(7px + env(safe-area-inset-bottom));background:rgba(255,255,255,.96);backdrop-filter:blur(16px);border-top:1px solid var(--line)}
  .mobile-nav a{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:7px 2px;color:var(--faint);font-size:10px;border-radius:9px}
  .mobile-nav a .ic{width:18px;height:18px}
  .mobile-nav a.on{color:var(--ink)}
  .topbar h2{font-size:23px}
  .stat-row{margin-left:0;width:100%}
  .bhs{grid-template-columns:1fr}
  .g2{grid-template-columns:1fr}
  .pick{grid-template-columns:repeat(2,1fr)}
  .lesson-foot .btn{flex:1}
  .hero-cta .btn{width:100%}
  .nav-cta .btn-ghost{display:none}
  .foot-in{flex-direction:column;gap:14px}
  .toasts{left:16px;right:16px;bottom:84px;align-items:stretch}
}
@media(prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important}}

/* ---------- markets ---------- */
.mk{overflow:hidden}
.mk-head{display:flex;align-items:center;gap:14px;padding:18px 20px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.mk-meta{font-size:11.5px;margin-top:3px}
.mk-cols,.mk-row{
  display:grid;align-items:center;gap:12px;
  grid-template-columns:34px minmax(150px,1.6fr) 104px 78px 78px 108px 108px 116px;
}
.mk-cols{padding:10px 20px;border-bottom:1px solid var(--line);font-size:10.5px;color:var(--faint);
  text-transform:uppercase;letter-spacing:.07em;background:var(--surface-2)}
.mk-row{padding:11px 20px;border-bottom:1px solid var(--line);font-size:14px;transition:background .15s}
.mk-row:last-child{border-bottom:0}
.mk-row:hover{background:var(--surface-2)}
.mk-rk{color:var(--faint);font-size:12px}
.mk-coin{display:flex;align-items:center;gap:10px;min-width:0}
.mk-coin img{border-radius:50%;flex:none}
.mk-nm{display:flex;align-items:baseline;gap:7px;font-weight:520;letter-spacing:-.015em;min-width:0}
.mk-nm span{color:var(--faint);font-size:11px;letter-spacing:.03em}
.mk-px{font-weight:500}
.mk-ch.up{color:var(--accent)}.mk-ch.dn{color:var(--down)}
.mk-cap,.mk-vol{color:var(--muted);font-size:13px}
.mk-spark{display:block;height:30px}
.mk-spark .spark{width:100%;height:30px;display:block}
.mk-empty{padding:44px 20px;text-align:center;color:var(--muted);font-size:14.5px;display:flex;flex-direction:column;align-items:center;gap:10px}
.mk-empty b{color:var(--ink);font-size:15.5px;font-weight:560}
.mk-empty p{max-width:420px}
.mk-spin{width:16px;height:16px;border-radius:50%;border:2px solid var(--line-2);border-top-color:var(--brand);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.mk-more{display:block;padding:14px 20px;text-align:center;font-size:13.5px;color:var(--brand);font-weight:520;border-top:1px solid var(--line);background:var(--surface-2)}
.mk-more:hover{background:var(--sky)}

/* ---------- progress board ---------- */
.spark-bars{display:flex;align-items:flex-end;gap:5px;height:96px;margin:22px 0 10px}
.spark-bars span{flex:1;display:flex;align-items:flex-end;height:100%;background:var(--surface-2);border-radius:5px;overflow:hidden}
.spark-bars i{display:block;width:100%;border-radius:5px;background:linear-gradient(180deg,var(--brand-2),var(--brand))}
.rec{display:flex;align-items:baseline;gap:12px;padding:9px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}
.rec:last-child{border-bottom:0}
.rec b{margin-left:auto;color:var(--ink);font-weight:560;font-variant-numeric:tabular-nums}
.mini .of{font-size:14px;color:var(--faint);font-weight:500;margin-left:2px}

/* ---------- badge claiming ---------- */
.claim-bar{
  display:flex;align-items:center;gap:14px;padding:14px 18px;margin-bottom:18px;border-radius:14px;
  border:1px solid rgba(181,130,44,.32);background:linear-gradient(180deg,#FDF6E7,#FBF1DC);
}
.claim-bar>div{display:flex;align-items:center;gap:9px;font-size:14.5px}
.claim-bar .ic{width:17px;height:17px;color:#A9762C}
.claim-bar .btn,.claim-bar>span.btn{margin-left:auto}
.ach.ready{border-color:rgba(181,130,44,.4);box-shadow:0 0 0 3px rgba(181,130,44,.08)}
.claim-btn{margin-top:12px;width:100%;padding:9px 12px;font-size:13px}
.badge-ic.gold{background:linear-gradient(160deg,#E9B44C,#C98A22)!important}

/* ---------- wallet ---------- */
.wallet .w-live{display:flex;align-items:center;gap:12px;padding:14px;border-radius:12px;background:var(--mint);border:1px solid rgba(14,122,87,.22);flex-wrap:wrap}
.wallet .w-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(14,122,87,.14)}
.wallet .w-addr{font-size:15px;font-weight:520}

/* ---------- daily session recap chart ---------- */
.mini-chart{opacity:.92;margin-bottom:18px}

@media(max-width:1180px){
  .mk-cols,.mk-row{grid-template-columns:32px minmax(140px,1.6fr) 100px 74px 74px 104px 112px}
  .hide-md{display:none}
}
@media(max-width:960px){
  .mk-cols,.mk-row{grid-template-columns:28px minmax(120px,1.5fr) 94px 70px 96px;gap:10px}
  .hide-sm{display:none}
}
@media(max-width:760px){
  .mk-cols,.mk-row{grid-template-columns:20px minmax(64px,1.3fr) 74px 56px 46px;gap:6px;padding:11px 12px}
  .mk-spark,.mk-spark .spark{height:26px}
  .mk-row{font-size:13.5px}
  .mk-head{padding:14px}
  .mk-nm{flex-direction:column;gap:1px}
  .claim-bar{flex-wrap:wrap}
  .spark-bars{height:72px}
}

/* ---------- global leaderboard ---------- */
.lb-live{overflow:hidden}
.lb-head{display:flex;align-items:center;gap:16px;padding:18px 20px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.lb-live .lb-row{padding:11px 20px;border-radius:0;border-bottom:1px solid var(--line);margin:0;
  display:grid;grid-template-columns:26px 30px 1fr auto auto;gap:12px;align-items:center}
.lb-live .lb-row:last-of-type{border-bottom:0}
.lb-live .lb-row.lead .rk{color:var(--sand);font-weight:600}
.lb-live .lb-row.lead .av{background:linear-gradient(160deg,#E9B44C,#C98A22);color:#fff;border-color:transparent}
.lb-live .lb-row.me{box-shadow:inset 3px 0 0 var(--brand)}
.lb-streak{display:flex;align-items:center;gap:4px;font-size:12px}
.lb-streak .ic{width:12px;height:12px;color:var(--down)}
.switch{display:flex;align-items:center;gap:9px;margin-left:auto;cursor:pointer;font-size:13.5px;color:var(--muted)}
.switch input{position:absolute;opacity:0;width:0;height:0}
.switch .track{width:38px;height:22px;border-radius:99px;background:var(--paper-2);border:1px solid var(--line-2);
  position:relative;transition:background .18s,border-color .18s;flex:none}
.switch .knob{position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:#fff;
  box-shadow:var(--sh-1);transition:transform .18s}
.switch input:checked+.track{background:var(--brand);border-color:var(--brand)}
.switch input:checked+.track .knob{transform:translateX(16px)}
.switch input:focus-visible+.track{outline:2px solid var(--brand);outline-offset:2px}
@media(max-width:760px){
  .lb-live .lb-row{grid-template-columns:22px 28px 1fr auto;gap:9px;padding:11px 14px}
  .lb-streak{display:none}
  .switch .lbl{display:none}
}

/* ---------- mist: the blue wash that runs through the whole page ---------- */
body::before{
  content:'';position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(1200px 680px at 10% -8%,rgba(91,120,240,.26),transparent 64%),
    radial-gradient(1000px 620px at 94% 6%,rgba(120,155,245,.22),transparent 62%),
    radial-gradient(900px 620px at 78% 52%,rgba(108,140,246,.16),transparent 60%),
    radial-gradient(820px 560px at 8% 74%,rgba(91,120,240,.14),transparent 62%),
    radial-gradient(900px 700px at 50% 108%,rgba(14,122,87,.08),transparent 62%);
}
.site,.app{position:relative;z-index:1}
.hero-stage{--mist:.6}
.hero-stage::after{
  content:'';position:absolute;inset:0;pointer-events:none;border-radius:inherit;
  background:radial-gradient(760px 400px at 50% 0%,rgba(91,120,240,calc(.20 * var(--mist))),transparent 68%);
  transition:opacity .3s;
}
section.sec.tinted{
  background:
    radial-gradient(760px 420px at 15% 0%,rgba(91,120,240,.22),transparent 62%),
    radial-gradient(680px 400px at 88% 100%,rgba(120,155,245,.20),transparent 60%),
    linear-gradient(180deg,rgba(234,240,255,.5),rgba(247,245,241,.2));
}
.card{position:relative}
.main{position:relative}
.main::before{
  content:'';position:fixed;left:var(--sidebar);right:0;top:0;height:420px;pointer-events:none;z-index:-1;
  background:radial-gradient(900px 400px at 30% 0%,rgba(91,120,240,.13),transparent 65%);
}
.hero-panel{background:linear-gradient(180deg,rgba(234,240,255,.55),rgba(255,255,255,.9))}
.band{box-shadow:0 40px 90px -50px rgba(47,75,214,.85),var(--sh-3)}

/* ---------- reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.22,.9,.3,1),transform .7s cubic-bezier(.22,.9,.3,1)}
.reveal.is-in{opacity:1;transform:none}
.reveal.d1{transition-delay:.07s}.reveal.d2{transition-delay:.14s}.reveal.d3{transition-delay:.21s}
.reveal.d4{transition-delay:.28s}.reveal.d5{transition-delay:.35s}.reveal.d6{transition-delay:.42s}
.reveal.pop{transform:translateY(30px) scale(.97)}
.reveal.pop.is-in{transform:none}

/* ---------- hero frame lift ---------- */
.hero-frame{transform-origin:50% 0;will-change:transform;transition:box-shadow .3s}

/* ---------- click feedback ---------- */
.fx-ripple{
  position:absolute;border-radius:50%;pointer-events:none;z-index:2;
  background:radial-gradient(circle,rgba(47,75,214,.26),rgba(47,75,214,0) 68%);
  animation:fx-ripple .6s cubic-bezier(.2,.8,.3,1) forwards;
}
@keyframes fx-ripple{from{transform:scale(.15);opacity:.95}to{transform:scale(1);opacity:0}}
.btn,.opt,.path-card,.node-card,.nav-item,.tab,.mk-row,.mobile-nav a{overflow:hidden}
.btn{position:relative}
.btn-primary .fx-ripple{background:radial-gradient(circle,rgba(255,255,255,.5),rgba(255,255,255,0) 68%)}
.fx-burst{
  position:fixed;transform:translate(-50%,-50%);pointer-events:none;z-index:400;
  font-family:var(--mono);font-size:15px;font-weight:500;color:var(--brand);
  text-shadow:0 2px 10px rgba(255,255,255,.9);animation:fx-burst 1.3s cubic-bezier(.15,.8,.3,1) forwards;
}
.fx-burst.good{color:var(--accent)}
.fx-burst.bad{color:var(--down)}
.fx-burst.gold{color:#B5822C;font-size:17px}
@keyframes fx-burst{
  0%{opacity:0;transform:translate(-50%,-50%) scale(.6)}
  18%{opacity:1;transform:translate(-50%,-90%) scale(1.08)}
  70%{opacity:1;transform:translate(-50%,-150%) scale(1)}
  100%{opacity:0;transform:translate(-50%,-210%) scale(.96)}
}
.fx-pulse{
  position:fixed;width:22px;height:22px;margin:-11px 0 0 -11px;border-radius:50%;pointer-events:none;z-index:399;
  border:2px solid var(--brand);animation:fx-pulse .65s cubic-bezier(.2,.8,.3,1) forwards;
}
.fx-pulse.good{border-color:var(--accent)}
.fx-pulse.bad{border-color:var(--down)}
.fx-pulse.gold{border-color:#C98A22}
@keyframes fx-pulse{from{transform:scale(.4);opacity:.9}to{transform:scale(4.2);opacity:0}}

/* answer states get a little life */
.opt.right{animation:fx-right .5s cubic-bezier(.2,1.3,.4,1)}
@keyframes fx-right{35%{transform:translateX(3px) scale(1.012)}}
.opt.wrong{animation:fx-wrong .42s cubic-bezier(.36,.07,.19,.97)}
@keyframes fx-wrong{20%{transform:translateX(-5px)}45%{transform:translateX(4px)}70%{transform:translateX(-2px)}}
.opt.right .k,.opt.wrong .k{animation:fx-pop .42s cubic-bezier(.2,1.5,.4,1)}
@keyframes fx-pop{from{transform:scale(.5)}}
.stat.bump{animation:fx-bump .55s cubic-bezier(.2,1.4,.4,1)}
@keyframes fx-bump{35%{transform:translateY(-3px) scale(1.05)}}
.lvl-ring.bump i{animation:fx-pop .5s cubic-bezier(.2,1.5,.4,1)}
.card.press:active{transform:scale(.995)}
.node-card:active,.path-card:active{transform:scale(.992)}

/* a softer blue wash for the plain sections between the tinted ones */
section.sec.mist{position:relative}
section.sec.mist::before{
  content:'';position:absolute;inset:-60px -10vw;pointer-events:none;z-index:-1;
  background:
    radial-gradient(820px 400px at 20% 34%,rgba(91,120,240,.20),transparent 64%),
    radial-gradient(760px 380px at 84% 62%,rgba(120,155,245,.18),transparent 62%),
    radial-gradient(600px 300px at 54% 100%,rgba(108,140,246,.12),transparent 62%);
}
section.sec.mist:nth-of-type(even)::before{
  background:
    radial-gradient(820px 400px at 78% 30%,rgba(91,120,240,.20),transparent 64%),
    radial-gradient(760px 380px at 16% 66%,rgba(120,155,245,.17),transparent 62%);
}

/* ---------- trade simulator ---------- */
.sim-bank{display:grid;grid-template-columns:auto 1fr auto;gap:26px;align-items:center;margin-bottom:18px}
.sim-credits{font-size:38px;font-weight:600;letter-spacing:-.04em;line-height:1.05}
.sim-credits span{font-size:16px;color:var(--faint);font-weight:500;letter-spacing:0}
.sim-meta{display:grid;grid-template-columns:1fr;gap:0;min-width:230px}
.sim-meta .rec{padding:6px 0;font-size:13px}
.sim-trade .sim-controls{margin-top:20px;display:flex;flex-direction:column;gap:16px}
.sim-controls.spent{opacity:.5;pointer-events:none}
.sim-row{display:flex;flex-direction:column;gap:9px}
.sim-lbl{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);font-weight:600}
.sim-opts{display:flex;gap:8px;flex-wrap:wrap}
.sim-opts.dim{opacity:.4;pointer-events:none}
.sim-pick{flex:1;min-width:96px;display:flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 12px;font-weight:520;flex-direction:row}
.sim-pick .sub{display:block;font-size:10.5px;color:var(--faint);margin-left:6px;font-weight:400}
.sim-pick.sel{border-color:var(--brand);background:var(--brand-soft);color:var(--brand)}
.sim-pick.sel .sub{color:var(--brand);opacity:.8}
.sim-pick .sig{width:9px;height:9px;border-radius:50%;background:var(--faint);flex:none}
.sim-pick .sig.up{background:var(--accent)}
.sim-pick .sig.dn{background:var(--down)}
.sim-after{display:grid;grid-template-columns:repeat(3,1fr);gap:0 22px;margin-top:16px;
  padding:4px 16px;border:1px solid var(--line);border-radius:12px;background:var(--surface-2)}
.sim-after .rec{border-bottom:0;font-size:13px}
@media(max-width:900px){
  .sim-bank{grid-template-columns:1fr;gap:16px}
  .sim-meta{min-width:0}
  .sim-after{grid-template-columns:1fr;gap:0;padding:6px 14px}
  .sim-after .rec{border-bottom:1px solid var(--line)}
  .sim-after .rec:last-child{border-bottom:0}
  .sim-pick{min-width:0;flex-direction:column;gap:4px;padding:11px 8px;font-size:13.5px}
  .sim-pick .sub{margin-left:0}
}

/* ---------- storage warning ---------- */
.storage-warn{margin-bottom:20px}
.storage-warn .warn-in{
  display:flex;align-items:center;gap:14px;padding:14px 18px;border-radius:14px;
  border:1px solid rgba(181,130,44,.34);background:linear-gradient(180deg,#FDF6E7,#FBF1DC);
  font-size:14px;line-height:1.5;color:var(--ink-2);
}
.storage-warn .ic{width:18px;height:18px;color:#A9762C;flex:none}
.storage-warn b{color:var(--ink);font-weight:600}
.storage-warn .btn{margin-left:auto;flex:none;white-space:nowrap}
@media(max-width:760px){
  .storage-warn .warn-in{flex-wrap:wrap}
  .storage-warn .btn{margin-left:0;width:100%}
}
label.btn{cursor:pointer}

/* ---------- investor IQ ---------- */
.iq-card{display:grid;grid-template-columns:auto 1fr;gap:32px;align-items:center;margin-bottom:18px}
.iq-num{
  font-family:var(--mono);font-size:56px;font-weight:500;letter-spacing:-.05em;line-height:1;
  color:var(--ink);display:flex;align-items:baseline;gap:12px;margin:6px 0 8px;
}
.iq-num span{font-size:15px;letter-spacing:0;color:var(--faint);font-weight:400}
.iq-note{border-left:1px solid var(--line);padding-left:24px;max-width:46ch}
.iq-panel{display:flex;flex-direction:column;align-items:flex-start}
.iq-panel .btn{margin-top:auto}

/* ---------- scenario library ---------- */
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.chip-btn{
  padding:8px 15px;border-radius:10px;border:1px solid var(--line);background:var(--surface);
  font-size:13.5px;color:var(--muted);font-weight:500;transition:border-color .16s,color .16s,background .16s;
}
.chip-btn:hover{border-color:var(--line-2);color:var(--ink)}
.chip-btn.on{background:var(--ink);border-color:var(--ink);color:#fff}
.scen-list{display:flex;flex-direction:column;gap:10px}
.scen-card{
  display:flex;align-items:center;gap:16px;padding:16px 18px;
  transition:border-color .18s,box-shadow .18s,transform .18s;
}
.scen-card:hover{border-color:var(--line-2);box-shadow:var(--sh-2);transform:translateX(2px)}
.scen-card .ic-box{
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;flex:none;
  background:var(--tint-bg);color:var(--tint);border:1px solid var(--tint-br);
}
.scen-card .ic-box .ic{width:18px;height:18px}
.scen-body{min-width:0;flex:1}
.scen-card .tt{font-weight:560;font-size:15.5px;letter-spacing:-.015em}
.scen-card .ds{font-size:12.5px;color:var(--muted);margin-top:3px}
.scen-meta{font-size:11px;color:var(--faint);margin-top:7px;display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.scen-card.done{background:linear-gradient(180deg,var(--surface),var(--surface-2))}
.dots{display:inline-flex;gap:3px;align-items:center}
.dots i{width:5px;height:5px;border-radius:50%;background:var(--line-2);display:block}
.dots i.on{background:var(--brand)}

/* ---------- scenario reveal ---------- */
.reveal-box{
  margin-top:18px;padding:20px 22px;border-radius:13px;
  background:var(--surface-2);border:1px solid var(--line);
}
.reveal-box p{color:var(--ink-2);font-size:15px;line-height:1.62}
.deltas{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.delta{
  font-family:var(--mono);font-size:11.5px;padding:4px 10px;border-radius:7px;
  border:1px solid var(--line);background:var(--surface);
}
.delta.up{color:var(--accent);border-color:rgba(14,122,87,.3)}
.delta.dn{color:var(--down);border-color:rgba(192,72,60,.3)}

/* ---------- analytics ---------- */
.locked-panel{text-align:center;padding:56px 26px;display:flex;flex-direction:column;align-items:center;gap:14px;border-style:dashed}
.locked-panel .ic-box{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:var(--tint-bg);color:var(--tint)}
.locked-panel .ic-box .ic{width:22px;height:22px}
.locked-panel h3{font-size:19px}
.locked-panel p{max-width:44ch;color:var(--muted)}
.cat-row{padding:11px 0;border-bottom:1px solid var(--line-soft)}
.cat-row:last-child{border-bottom:0}
.cat-top{display:flex;justify-content:space-between;align-items:baseline;font-size:14px;margin-bottom:8px}
.cat-row .bar{margin:0 0 6px}
.arch-card{background:linear-gradient(180deg,var(--sky),var(--surface))}

/* ---------- decision profile + radar ---------- */
.trait{padding:9px 0}
.trait-top{display:flex;justify-content:space-between;align-items:baseline;font-size:14px;margin-bottom:7px}
.trait .bar{margin:0}
.trait .bar>i.hi{background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.trait .bar>i.mid{background:linear-gradient(90deg,var(--sand),#C99A3E)}
.trait .bar>i.lo{background:linear-gradient(90deg,var(--down),#D2695C)}
.radar-wrap{display:grid;place-items:center;color:var(--ink)}
.radar{width:100%;max-width:320px;height:auto;display:block}
.mini-head{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);font-weight:600;margin-bottom:10px}
.tick-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px}
.tick-list li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-2);line-height:1.5}
.tick-list li::before{content:'';position:absolute;left:0;top:8px;width:7px;height:7px;border-radius:50%}
.tick-list.good li::before{background:var(--accent)}
.tick-list.warn li::before{background:var(--sand)}

@media(max-width:900px){
  .iq-card{grid-template-columns:1fr;gap:18px}
  .iq-note{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:16px;max-width:none}
  .scen-card{align-items:flex-start}
}

/* ---------- investor IQ scoring rule ---------- */
.iq-scale{display:flex;gap:16px;flex-wrap:wrap;font-size:11.5px;color:var(--muted);align-items:center}
.iq-scale span{display:flex;align-items:center;gap:6px}
.iq-scale i{width:7px;height:7px;border-radius:50%;display:block}
.iq-scale i.up{background:var(--accent)}
.iq-scale i.dn{background:var(--down)}
.iq-ledger{display:flex;gap:14px;flex-wrap:wrap;font-size:12.5px;margin-top:12px;align-items:baseline}
.iq-ledger .up{color:var(--accent)}
.iq-ledger .dn{color:var(--down)}
.iq-bars{display:flex;flex-direction:column;gap:14px;margin-top:4px}
.iq-bar{display:grid;grid-template-columns:1fr minmax(120px,240px) auto;gap:16px;align-items:center;font-size:14px}
.iq-bar .lbl{color:var(--ink-2)}
.iq-bar .bar{margin:0}
.iq-bar b{font-variant-numeric:tabular-nums}
@media(max-width:760px){
  .iq-bar{grid-template-columns:1fr auto;gap:6px 12px}
  .iq-bar .bar{grid-column:1/-1}
}