:root {
  color-scheme: light;
  --bg: #EFF1F4;
  --surface: #FFFFFF;
  --sunken: #F5F6F8;
  --ink: #101319;
  --muted: #5F6675;
  --faint: #8C93A1;
  --rule: #E1E4EA;
  --bar: #2C3440;
  --bar-dim: #C9CEDA;
  --math: #2a78d6;
  --stud: #1baf7a;
  --gk: #eb6834;
  --good: #1b7f5a;
  --bad: #c0392b;
  --display: "Bricolage Grotesque", "Helvetica Neue", Arial, sans-serif;
  --body: "Instrument Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0B0D11; --surface: #14161B; --sunken: #1A1D24;
    --ink: #EDEFF3; --muted: #99A0AE; --faint: #767D8B; --rule: #262A33;
    --bar: #C9D2E0; --bar-dim: #333945;
    --math: #3987e5; --stud: #199e70; --gk: #d95926;
    --good: #4fbf94; --bad: #e8796a;
  }
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--body); font-size: 16px; line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  padding-left: max(18px, env(safe-area-inset-left, 0px));
  padding-right: max(18px, env(safe-area-inset-right, 0px));
}
.wrap { max-width: 560px; margin: 0 auto; padding-block: 26px 56px; }

header { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 22px; }
.who { font-family: var(--mono); font-size: 10px; letter-spacing: .09em; text-transform: uppercase; color: var(--faint); }

h1 { font-family: var(--display); font-weight: 700; font-size: clamp(1.8rem, 6vw, 2.3rem); letter-spacing: -0.02em; line-height: 1.06; margin: 0 0 8px; text-wrap: balance; }
h2.h2 { font-family: var(--display); font-weight: 700; font-size: 1.6rem; letter-spacing: -0.015em; line-height: 1.1; margin: 0 0 16px; text-wrap: balance; }
.lede { color: var(--muted); font-size: .92rem; margin: 0 0 20px; }
.eyebrow { font-family: var(--mono); font-size: 10px; letter-spacing: .09em; text-transform: uppercase; color: var(--faint); margin-bottom: 12px; }
.sec { font-family: var(--mono); font-size: 9.5px; letter-spacing: .09em; text-transform: uppercase; color: var(--faint); margin: 0 0 10px; }
.err { color: var(--bad); font-size: .88rem; margin: 12px 0 0; }

.pill { font: inherit; font-size: .72rem; border: 1px solid var(--rule); border-radius: 20px; padding: 5px 11px; color: var(--muted); background: none; cursor: pointer; }
.pill[aria-pressed="true"] { border-color: var(--ink); color: var(--ink); font-weight: 600; }
.cta { font: inherit; font-weight: 600; font-size: .95rem; width: 100%; padding: 15px; border-radius: 12px; border: 0; background: var(--ink); color: var(--surface); cursor: pointer; transition: opacity .15s; }
.cta:hover { opacity: .9; }
.cta:focus-visible { outline: 3px solid var(--math); outline-offset: 3px; }
.cta[disabled] { opacity: .4; cursor: default; }
.link { font: inherit; font-size: .82rem; color: var(--muted); background: none; border: 0; padding: 8px 0; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.rowlinks { display: flex; justify-content: center; gap: 20px; margin-top: 12px; flex-wrap: wrap; }

/* login */
.pin {
  font: inherit; font-family: var(--mono); font-size: 1.8rem; letter-spacing: .3em; text-align: center;
  width: 100%; padding: 16px 12px; margin-bottom: 12px; border-radius: 12px;
  border: 1.5px solid var(--rule); background: var(--surface); color: var(--ink);
}
.pin:focus { outline: none; border-color: var(--ink); }

/* profiles */
.profiles { display: grid; gap: 10px; }
.profiles button {
  font: inherit; text-align: left; cursor: pointer; background: var(--sunken);
  color: var(--ink); border: 1px solid var(--rule); border-radius: 14px; padding: 15px 14px;
  display: flex; align-items: center; gap: 14px; width: 100%;
}
.profiles button:hover { border-color: var(--ink); }
.profiles .ini { width: 40px; height: 40px; border-radius: 50%; background: var(--ink); color: var(--surface); display: grid; place-items: center; font-family: var(--display); font-weight: 700; font-size: .95rem; flex: none; }
.profiles .kname { display: block; font-weight: 600; font-size: .95rem; }
.profiles .kmeta { display: block; font-size: .76rem; color: var(--muted); margin-top: 2px; }

/* powers */
.power { display: grid; grid-template-columns: 38px 1fr; gap: 12px; align-items: center; padding: 12px 0; border-top: 1px solid var(--rule); }
.power:last-child { border-bottom: 1px solid var(--rule); }
.pico { width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center; background: var(--sunken); color: var(--c); flex: none; }
.pico svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.pn { font-family: var(--display); font-weight: 700; font-size: 1.02rem; letter-spacing: -0.01em; line-height: 1.1; }
.pbar { display: flex; gap: 2px; margin: 6px 0 4px; }
.pbar i { flex: 1; height: 4px; border-radius: 2px; background: var(--rule); }
.pbar i.on { background: var(--c); }
.pl { font-size: .68rem; color: var(--muted); }

/* theme picker */
.pick { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 20px; }
.pick button { font: inherit; text-align: left; cursor: pointer; background: var(--surface); color: var(--ink); border: 1.5px solid var(--rule); border-radius: 12px; padding: 13px 14px; }
.pick button .pt { display: block; font-weight: 600; font-size: .92rem; }
.pick button .pd { display: block; font-size: .76rem; color: var(--muted); margin-top: 2px; }
.pick button[aria-pressed="true"] { border-color: var(--ink); background: var(--sunken); }

.todaycard { border: 1px solid var(--rule); border-radius: 14px; padding: 15px 15px; margin-bottom: 14px; }
.todaycard .t { font-family: var(--mono); font-size: 10px; letter-spacing: .09em; text-transform: uppercase; color: var(--faint); margin-bottom: 8px; }
.todaycard .big { font-family: var(--display); font-weight: 700; font-size: 1.12rem; line-height: 1.2; margin-bottom: 4px; }
.todaycard .sm { font-size: .79rem; color: var(--muted); }
.streakline { font-size: .8rem; color: var(--muted); text-align: center; margin-top: 12px; }

/* quiz */
.prog { display: flex; gap: 5px; margin-bottom: 24px; }
.prog i { flex: 0 0 16px; height: 4px; border-radius: 2px; background: var(--rule); }
.prog i.on { background: var(--ink); }
.prog i.cur { background: var(--faint); }
.tag { font-size: .68rem; letter-spacing: .09em; text-transform: uppercase; font-weight: 600; color: var(--c); margin-bottom: 12px; display: flex; align-items: center; gap: 7px; font-family: var(--mono); }
.tag i { width: 7px; height: 7px; border-radius: 50%; background: var(--c); }
.q { font-family: var(--display); font-weight: 500; font-size: clamp(1.25rem, 4.4vw, 1.5rem); line-height: 1.28; margin: 0 0 22px; text-wrap: pretty; }
.qs { font-size: .78rem; color: var(--muted); font-family: var(--mono); margin: -12px 0 18px; letter-spacing: .05em; }

.num { font: inherit; font-family: var(--mono); font-size: 1.45rem; text-align: center; width: 100%; padding: 15px; border-radius: 12px; border: 1.5px solid var(--rule); background: var(--surface); color: var(--ink); }
.num:focus { outline: none; border-color: var(--ink); }
.num:disabled { opacity: .8; }

.opts { display: grid; gap: 8px; }
.opts.shapes { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 6px; }
.opts.shapes .opt { flex-direction: column; align-items: center; justify-content: center; gap: 5px; padding: 9px 4px; }
.opts.shapes .opt .l { padding-top: 0; }
.opt { font: inherit; font-size: .95rem; text-align: left; cursor: pointer; background: var(--surface); color: var(--ink); border: 1.5px solid var(--rule); border-radius: 12px; padding: 13px 15px; display: flex; gap: 12px; align-items: flex-start; }
.opt .l { font-family: var(--mono); font-size: .78rem; color: var(--faint); padding-top: 2px; }
.opt[aria-pressed="true"] { border-color: var(--ink); background: var(--sunken); }
.opt:disabled { cursor: default; opacity: .85; }
.shape { display: block; line-height: 0; }
.shape rect, .stem rect { fill: currentColor; fill-opacity: .14; stroke: currentColor; stroke-width: .07; }
.stem { margin: -4px 0 18px; padding: 13px; border-radius: 12px; background: var(--sunken); display: inline-block; line-height: 0; }

.order-list { display: grid; gap: 8px; }
.ord { font: inherit; font-size: .93rem; text-align: left; cursor: pointer; background: var(--surface); color: var(--ink); width: 100%; border: 1.5px solid var(--rule); border-radius: 12px; padding: 12px 15px; display: flex; gap: 12px; align-items: center; }
.ord .b { flex: none; width: 26px; height: 26px; border-radius: 50%; border: 1.5px dashed var(--faint); opacity: .75; font-family: var(--mono); font-size: .74rem; display: grid; place-items: center; color: var(--muted); }
.ord[data-picked="1"] { border-color: var(--ink); background: var(--sunken); }
.ord[data-picked="1"] .b { background: var(--ink); border: 1.5px solid var(--ink); color: var(--surface); opacity: 1; }
.ord:disabled { cursor: default; }
.hint { font-size: .8rem; color: var(--muted); margin: -6px 0 14px; }

.fb { margin-top: 18px; border-radius: 12px; padding: 15px 16px; border-left: 3px solid var(--c); background: var(--sunken); }
.fb.ok { --c: var(--good); }
.fb.no { --c: var(--bad); }
.fb.soft { --c: var(--gk); }
.fb .h { font-weight: 700; font-size: .93rem; color: var(--c); margin-bottom: 5px; }
.fb p { margin: 0; font-size: .9rem; }
.fb .deeper { margin-top: 8px; font-size: .84rem; color: var(--muted); }
.actions { margin-top: 16px; }

/* result */
.score { font-family: var(--display); font-weight: 700; font-size: 3.6rem; line-height: 1; letter-spacing: -0.03em; }
.score span { font-family: var(--body); font-size: 1.1rem; color: var(--muted); letter-spacing: 0; font-weight: 400; }
.breakdown { display: grid; margin: 20px 0; border-top: 1px solid var(--rule); }
.row { display: grid; grid-template-columns: 1fr auto; gap: 14px; align-items: baseline; padding: 12px 0; border-bottom: 1px solid var(--rule); }
.row .nm { font-size: .9rem; display: flex; align-items: center; gap: 8px; }
.row .nm i { width: 8px; height: 8px; border-radius: 50%; background: var(--c); }
.row .sc { font-family: var(--mono); font-size: .84rem; }

.stampbox { border: 1px dashed var(--rule); border-radius: 12px; padding: 15px 16px; margin-bottom: 20px; }
.stampbox .lbl { font-family: var(--mono); font-size: 9.5px; letter-spacing: .09em; text-transform: uppercase; color: var(--faint); margin-bottom: 8px; }
.stamp { display: inline-block; font-size: .78rem; font-weight: 600; color: var(--good); border: 1.5px solid var(--good); border-radius: 4px; padding: 4px 9px; margin: 0 5px 5px 0; }
.stampbox .none { font-size: .86rem; color: var(--muted); }

/* unlocked */
.unlocked { background: var(--sunken); border-radius: 16px; padding: 22px 18px; text-align: center; margin-bottom: 20px; }
.unlocked .over { font-family: var(--mono); font-size: 9.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--faint); margin-bottom: 12px; }
.unlocked .bigico { width: 64px; height: 64px; border-radius: 20px; margin: 0 auto 12px; display: grid; place-items: center; background: var(--surface); color: var(--c); border: 1px solid var(--rule); }
.unlocked .bigico svg { width: 32px; height: 32px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.unlocked .rk { font-family: var(--display); font-weight: 700; font-size: 1.8rem; letter-spacing: -0.02em; line-height: 1; }
.unlocked .rksub { font-size: .8rem; color: var(--muted); margin-top: 8px; }

/* answers */
.toggle { margin-bottom: 16px; }
.rlist { display: grid; }
.ritem { padding: 14px 0 14px 12px; border-bottom: 1px solid var(--rule); border-left: 2px solid transparent; }
.ritem.miss { border-left-color: var(--bad); }
.rt { font-family: var(--mono); font-size: 9.5px; letter-spacing: .07em; text-transform: uppercase; color: var(--faint); margin-bottom: 5px; }
.rq { font-family: var(--display); font-weight: 500; font-size: .96rem; line-height: 1.3; margin: 0 0 8px; }
.rr { display: flex; gap: 8px; font-size: .8rem; margin: 0 0 3px; align-items: baseline; }
.rr .k { width: 56px; flex: none; color: var(--faint); font-size: .64rem; letter-spacing: .04em; text-transform: uppercase; }
.rr .v { flex: 1; }
.mark { font-size: .68rem; font-weight: 700; white-space: nowrap; }
.mark.good { color: var(--good); } .mark.mid { color: var(--gk); } .mark.bad { color: var(--bad); }
.rw { font-size: .78rem; color: var(--muted); margin: 7px 0 0; }

/* results */
.tiles { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 24px; }
.tile { background: var(--sunken); border-radius: 12px; padding: 12px 13px; }
.tile .n { font-family: var(--display); font-weight: 700; font-size: 1.5rem; line-height: 1; letter-spacing: -0.02em; }
.tile .l { font-size: .7rem; color: var(--muted); margin-top: 4px; }
.srow { display: grid; grid-template-columns: 70px 1fr 42px; align-items: center; gap: 10px; margin-bottom: 9px; }
.sname { font-size: .74rem; color: var(--muted); }
.strack { display: block; height: 10px; background: var(--sunken); border-radius: 4px; overflow: hidden; }
.sfill { display: block; height: 100%; width: var(--w); background: var(--c); border-radius: 0 4px 4px 0; }
.sval { font-family: var(--mono); font-size: .72rem; text-align: right; }
.chips { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 22px; }
.chip { font-size: .7rem; border: 1px solid var(--c); color: var(--c); border-radius: 4px; padding: 3px 8px; font-weight: 600; }

/* trends */
.chart { position: relative; padding-left: 26px; height: 130px; margin-bottom: 6px; }
.yaxis { position: absolute; left: 0; top: -6px; bottom: 0; width: 22px; display: flex; flex-direction: column; justify-content: space-between; font-family: var(--mono); font-size: 8.5px; color: var(--faint); text-align: right; }
.glines { position: absolute; left: 26px; right: 0; top: -6px; bottom: 0; display: flex; flex-direction: column; justify-content: space-between; }
.glines i { display: block; height: 1px; background: var(--rule); }
.bars { position: absolute; left: 26px; right: 0; bottom: 0; height: 118px; display: flex; align-items: flex-end; gap: 2px; }
.bar { flex: 1; max-width: 34px; background: var(--bar); border-radius: 4px 4px 0 0; height: var(--h); min-height: 2px; position: relative; cursor: pointer; }
.bar.dim { background: var(--bar-dim); }
.bar.last { background: var(--math); }
.tip { position: absolute; left: 50%; transform: translate(-50%, -100%); top: -6px; background: var(--ink); color: var(--surface); font-family: var(--mono); font-size: 9.5px; padding: 3px 6px; border-radius: 4px; white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity .12s; }
.bar:hover .tip, .bar:focus .tip, .bar.show .tip { opacity: 1; }
.xaxis { display: flex; gap: 2px; padding-left: 26px; margin-top: 6px; }
.xaxis span { flex: 1; max-width: 34px; text-align: center; font-family: var(--mono); font-size: 8px; color: var(--faint); }
.legend { display: flex; gap: 14px; font-size: .7rem; color: var(--muted); margin-top: 12px; }
.legend span { display: flex; align-items: center; gap: 5px; }
.legend i { width: 8px; height: 8px; border-radius: 2px; background: var(--c); }

/* route */
.route { display: grid; margin-bottom: 20px; }
.rstep { display: grid; grid-template-columns: 26px 1fr auto; gap: 10px; align-items: center; padding: 7px 0; font-size: .78rem; color: var(--faint); border-bottom: 1px solid var(--rule); }
.rstep:last-child { border-bottom: 0; }
.rstep .ri { width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; background: var(--sunken); color: var(--rule); }
.rstep .ri svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.rstep.done { color: var(--muted); }
.rstep.done .ri { color: var(--c); opacity: .5; }
.rstep.on { color: var(--ink); font-weight: 700; }
.rstep.on .ri { color: var(--c); }
.rstep.on span:last-child { font-family: var(--mono); font-size: 8.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--c); font-weight: 500; }

[hidden] { display: none !important; }