@font-face { font-family: "Space Grotesk"; src: url("/static/fonts/SpaceGrotesk.ttf") format("truetype"); font-weight: 300 700; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("/static/fonts/JetBrainsMono.ttf") format("truetype"); font-weight: 100 800; font-display: swap; }

/* Tytonic — one dark surface, hairlines instead of cards, one accent (amber) used only for meaning:
   the score, the main action, the worst problem and the "your mix" line on the chart. */
:root {
  --bg: #0e0e10;
  --bg-2: #141417;          /* inputs, tooltip */
  --line: #26262b;          /* hairlines */
  --line-2: #3a3a41;        /* hover / stronger rule */
  --ink: #ebe8e1;           /* warm off-white */
  --ink-2: #9a978f;
  --ink-3: #66645f;
  --acc: #f2a33a;           /* amber, from the logo brief */
  --acc-ink: #0e0e10;
  --bad: #e2705a;
  --sans: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;
  --w: 1040px;
  --gutter: 20px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.5 var(--sans); min-height: 100vh; display: flex; flex-direction: column;
  font-feature-settings: "ss01";
}
main { width: 100%; max-width: var(--w); margin: 0 auto; padding: 0 var(--gutter) 64px; flex: 1; }
a { color: var(--ink); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--acc); }
h1, h2, h3 { margin: 0; font-weight: 500; letter-spacing: -0.015em; }
:focus-visible { outline: 2px solid var(--acc); outline-offset: 3px; }
.mono, .k { font-family: var(--mono); }
.k { font-size: 11px; line-height: 1.4; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-2); }
.fine { color: var(--ink-3); font: 12px/1.5 var(--mono); margin: 12px 0 0; }

/* ── header / footer ──────────────────────────────────────────────────────── */
.top { border-bottom: 1px solid var(--line); }
.top-in { max-width: var(--w); margin: 0 auto; padding: 14px var(--gutter); display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 500 19px/1 var(--sans); letter-spacing: -0.02em; }
.brand:hover { color: var(--ink); }
.brand svg { width: 26px; height: 26px; display: block; }
.brand .word { position: relative; top: 1px; }
.tag { font: 12px var(--mono); color: var(--ink-2); letter-spacing: .02em; white-space: nowrap; margin-left: auto; }
.tag a { color: var(--ink-2); text-decoration: none; }
.tag a:hover { color: var(--acc); }
.nav { border-left: 1px solid var(--line-2); padding-left: 16px; display: flex; gap: 16px; }
.nav a { font: 500 14px/1 var(--sans); color: var(--ink-2); text-decoration: none; padding: 4px 0; }
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); box-shadow: 0 1px 0 var(--ink); }
.foot { border-top: 1px solid var(--line); margin-top: auto; }
.foot-in { max-width: var(--w); margin: 0 auto; padding: 20px var(--gutter) 36px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 40px; color: var(--ink-3); font: 12px/1.6 var(--mono); }
.foot p { margin: 0; }
.foot b { color: var(--ink-2); font-weight: 500; }

/* ── home ─────────────────────────────────────────────────────────────────── */
.home { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 0 64px; padding-top: 48px; }
.intro h1 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.12; max-width: 14em; }
.spec { margin: 36px 0 0; padding: 0; display: grid; gap: 0; border-top: 1px solid var(--line); }
.spec div { display: grid; grid-template-columns: 88px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.spec dt { font: 11px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-2); padding-top: 4px; }
.spec dd { margin: 0; font-size: 15px; line-height: 1.5; color: var(--ink); }

#up { display: grid; gap: 0; align-content: start; }
.step { display: grid; grid-template-columns: 40px 1fr; gap: 0 16px; padding: 18px 0; border-top: 1px solid var(--line); }
.step:first-child { border-top: 0; padding-top: 0; }
.step > .k { padding-top: 4px; color: var(--ink-3); }
.step .k em { font-style: normal; color: var(--ink-3); letter-spacing: 0; text-transform: none; margin-left: 8px; }
.step-l { grid-column: 2; }

.drop {
  grid-column: 2; display: grid; gap: 6px; cursor: pointer; padding: 26px 22px; min-height: 148px;
  border: 1px solid var(--line-2); align-content: center;
  transition: border-color .15s, background .15s;
}
.drop:hover, .drop.over { border-color: var(--ink-2); background: var(--bg-2); }
.drop.has { border-color: var(--acc); }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.drop:focus-within { outline: 2px solid var(--acc); outline-offset: 3px; }
.drop-main { font-size: 18px; font-weight: 500; word-break: break-word; }
.drop-main u { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; color: var(--ink); }
.drop-sub { font: 12px var(--mono); color: var(--ink-2); }
.drop.has .drop-sub { color: var(--acc); }

.field { display: grid; gap: 8px; }
.field > span { font: 11px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-2); }
select, textarea {
  width: 100%; background: var(--bg-2); color: var(--ink); border: 1px solid var(--line-2); border-radius: 2px;
  padding: 11px 12px; font: 15px/1.4 var(--sans); resize: vertical;
}
select { appearance: none; padding-right: 40px; background-image: linear-gradient(45deg, transparent 50%, var(--ink-2) 50%), linear-gradient(135deg, var(--ink-2) 50%, transparent 50%);
  background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%; background-size: 5px 5px; background-repeat: no-repeat; }
select:focus, textarea:focus { outline: none; border-color: var(--acc); }
textarea::placeholder { color: var(--ink-3); }
.check { display: flex; gap: 12px; align-items: flex-start; font-size: 14px; color: var(--ink); cursor: pointer; }
.check input { accent-color: var(--acc); width: 16px; height: 16px; margin: 3px 0 0; flex: none; }
.check em { display: block; color: var(--ink-2); font-style: normal; font-size: 13px; margin-top: 2px; }

.btn {
  display: inline-flex; justify-content: center; align-items: center; gap: 8px;
  background: var(--acc); color: var(--acc-ink); border: 1px solid var(--acc); border-radius: 2px;
  padding: 13px 22px; font: 500 15px/1.2 var(--sans); text-decoration: none; cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
}
.btn:hover { background: #f7b65a; border-color: #f7b65a; color: var(--acc-ink); }
.btn:disabled, .btn[aria-disabled="true"] { background: transparent; color: var(--ink-3); border-color: var(--line-2); cursor: not-allowed; }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn.ghost:hover { border-color: var(--ink); color: var(--ink); background: transparent; }
.submit { grid-column: 2; display: grid; gap: 12px; justify-items: start; }
.err { color: var(--bad); border-left: 2px solid var(--bad); padding: 2px 0 2px 12px; margin: 0; font-size: 14px; }

/* busy overlay */
.busy { position: fixed; inset: 0; background: rgba(14,14,16,.96); display: grid; place-content: center; text-align: left; z-index: 10; padding: 16px; }
.busy[hidden] { display: none; }
.busy-in { width: min(420px, 90vw); }
.meter { height: 2px; background: var(--line); margin: 0 0 20px; position: relative; overflow: hidden; }
.meter i { position: absolute; top: 0; bottom: 0; width: 30%; background: var(--acc); animation: sweep 1.6s cubic-bezier(.4,0,.6,1) infinite; }
@keyframes sweep { from { left: -30%; } to { left: 100%; } }
.busy-step { font: 500 20px var(--sans); margin: 0; }
.busy-sub { font: 12px var(--mono); color: var(--ink-2); margin: 6px 0 0; }

/* ── result ───────────────────────────────────────────────────────────────── */
.notice { font: 13px/1.5 var(--mono); color: var(--ink-2); border-left: 2px solid var(--acc); padding: 2px 0 2px 14px; margin: 24px 0 0; }

.score { display: grid; grid-template-columns: auto 1fr; gap: 8px 48px; align-items: end; padding: 44px 0 0; }
.score-num { display: flex; align-items: baseline; }
.num { font: 500 clamp(112px, 16vw, 184px)/.82 var(--sans); color: var(--acc); letter-spacing: -0.05em; font-variant-numeric: tabular-nums; }
.of { font: 400 16px var(--mono); color: var(--ink-2); margin-left: 10px; }
.score-txt { padding-bottom: 6px; }
.score-txt .k { margin: 0 0 12px; }
.score-txt h1 { font-size: clamp(22px, 2.6vw, 30px); line-height: 1.2; max-width: 22em; }
.ai { color: var(--ink-2); font: 12px var(--mono); margin: 12px 0 0; }

/* 0–100 ruler under the score: the readout */
.ruler { grid-column: 1 / -1; position: relative; height: 28px; margin-top: 16px;
  background:
    linear-gradient(var(--line-2), var(--line-2)) 0 0 / 100% 1px no-repeat,
    repeating-linear-gradient(to right, var(--line-2) 0 1px, transparent 1px 10%) 0 0 / 100% 8px no-repeat,
    linear-gradient(var(--line-2), var(--line-2)) 100% 0 / 1px 8px no-repeat; }
.ruler i { position: absolute; left: var(--v); top: -1px; width: 2px; height: 14px; background: var(--acc); transform: translateX(-1px); }
.ruler span { position: absolute; top: 12px; font: 11px var(--mono); color: var(--ink-3); transform: translateX(-50%); }
.ruler span:first-of-type { transform: none; }
.ruler span:last-of-type { transform: translateX(-100%); }

.subs { display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; margin: 32px 0 0; border-top: 1px solid var(--line); }
.sub { display: grid; grid-template-columns: 1fr auto; gap: 8px 12px; align-items: baseline; padding: 14px 0 12px; border-bottom: 1px solid var(--line); }
.sub-l { font: 11px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-2); }
.sub-v { font: 500 14px var(--mono); font-variant-numeric: tabular-nums; }
.sub.weak .sub-v { color: var(--acc); }
.bar { grid-column: 1 / -1; height: 2px; background: var(--line-2); }
.bar i { display: block; height: 100%; width: var(--w); min-width: 2px; background: var(--ink); transform-origin: left; animation: grow .6s cubic-bezier(.2,.8,.2,1) both; }
.sub.weak .bar i { background: var(--acc); }
@keyframes grow { from { transform: scaleX(0); } }

.sect { margin-top: 56px; }
.sect-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 8px 24px; padding-bottom: 12px; border-bottom: 1px solid var(--line-2); }
.sect-head h2 { font-size: 20px; }
.sect-head .k { margin: 0; }

.concern { display: grid; grid-template-columns: 88px 1fr; gap: 16px; margin-top: 40px; padding: 16px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.concern .k { padding-top: 4px; }
.concern p { margin: 0; font-size: 16px; }

.problem { display: grid; grid-template-columns: 40px 1fr auto; gap: 4px 16px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.pn { font: 500 13px/1.6 var(--mono); color: var(--ink-3); grid-row: 1 / 3; }
.problem:first-of-type .pn { color: var(--acc); }
.problem h3 { font-size: 20px; line-height: 1.3; }
.where { font: 13px var(--mono); color: var(--ink-2); margin: 2px 0 0; grid-column: 2; }
.lost { font: 13px var(--mono); color: var(--ink-2); white-space: nowrap; grid-column: 3; grid-row: 1; text-align: right; font-variant-numeric: tabular-nums; }
.lost b { font-weight: 500; color: var(--ink); }
.why { color: var(--ink-2); margin: 8px 0 0; grid-column: 2 / -1; max-width: 60em; }
.problems > .why { padding: 20px 0; margin: 0; border-bottom: 1px solid var(--line); }

.cta { display: grid; grid-template-columns: 1fr auto; gap: 8px 32px; align-items: center; margin-top: 40px; padding: 22px 0; border-top: 1px solid var(--line-2); border-bottom: 1px solid var(--line-2); }
.cta h2 { font-size: 20px; }
.cta p { color: var(--ink-2); margin: 4px 0 0; max-width: 40em; }

.legend { display: flex; gap: 20px; list-style: none; margin: 0; padding: 0; font: 12px var(--mono); color: var(--ink-2); }
.legend li { display: flex; align-items: center; gap: 8px; }
.sw { display: inline-block; width: 18px; height: 10px; }
.sw.mix { height: 2px; background: var(--acc); }
.sw.tgt { background: rgba(154,151,143,.22); border-top: 1px dashed var(--ink-2); }
.chart { position: relative; margin-top: 20px; touch-action: pan-y; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart .grid line { stroke: var(--line); stroke-width: 1; }
.chart .ax text { fill: var(--ink-3); font: 11px var(--mono); }
.chart .band { fill: rgba(154,151,143,.14); }
.chart .tline { fill: none; stroke: var(--ink-2); stroke-width: 1; stroke-dasharray: 3 4; }
.chart .mline { fill: none; stroke: var(--acc); stroke-width: 1.75; stroke-linejoin: round; }
.chart .xhair { stroke: var(--ink-2); stroke-width: 1; }
.chart .dotm { fill: var(--acc); stroke: var(--bg); stroke-width: 2; }
.tip { position: absolute; pointer-events: none; background: var(--bg-2); border: 1px solid var(--line-2); padding: 8px 10px; font: 12px/1.5 var(--mono); color: var(--ink); white-space: nowrap; transform: translate(-50%, -100%); margin-top: -12px; }
.tip b { color: var(--acc); font-weight: 500; }
.tip span { color: var(--ink-2); }
.table-view { margin-top: 12px; font: 12px var(--mono); color: var(--ink-2); }
summary { cursor: pointer; color: var(--ink-2); font: 13px var(--mono); list-style: none; display: inline-flex; align-items: center; gap: 8px; }
summary::-webkit-details-marker { display: none; }
summary::before { content: "+"; width: 10px; color: var(--ink-3); }
details[open] > summary::before { content: "−"; }
summary:hover { color: var(--ink); }
.table-view table { width: 100%; border-collapse: collapse; margin-top: 8px; font-variant-numeric: tabular-nums; }
.table-view th, .table-view td { text-align: right; padding: 5px 8px; border-bottom: 1px solid var(--line); font-weight: 400; }
.table-view th { color: var(--ink-3); }
.table-view th:first-child, .table-view td:first-child { text-align: left; padding-left: 0; }

.share { display: grid; grid-template-columns: minmax(0, 300px) 1fr; gap: 32px; align-items: start; padding-top: 24px; }
.share img { width: 100%; height: auto; border: 1px solid var(--line); display: block; }
.share-side { display: grid; gap: 10px; justify-items: start; }
.share-side p { color: var(--ink-2); margin: 0 0 6px; }
.again { font: 13px var(--mono); margin-top: 16px; }

.raw dl { display: grid; grid-template-columns: 1fr auto; gap: 0 16px; margin: 8px 0 0; font: 13px var(--mono); }
.raw dt { color: var(--ink-2); padding: 7px 0; border-bottom: 1px solid var(--line); }
.raw dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; padding: 7px 0; border-bottom: 1px solid var(--line); }

/* ── expired ──────────────────────────────────────────────────────────────── */
.plain { padding-top: 48px; max-width: 34em; }
.plain h1 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.12; }
.plain p { color: var(--ink-2); }
.plain .btn { margin-top: 8px; }

/* ── articles ─────────────────────────────────────────────────────────────── */
/* One measure for reading (680 px); tables may run wider, to the page grid, then scroll. */
.arts, .art { padding-top: 48px; }
.arts, .art > *, .prose > * { max-width: 680px; }
.art > .prose { max-width: none; }
.arts-head h1, .art-head h1 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.12; }
.arts-head p { color: var(--ink-2); margin: 16px 0 0; max-width: 36em; }
.art-list { list-style: none; margin: 40px 0 0; padding: 0; border-top: 1px solid var(--line); }
.art-row { display: grid; grid-template-columns: 112px 1fr; gap: 16px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.art-meta { display: grid; gap: 4px; align-content: start; padding-top: 5px; font: 12px/1.5 var(--mono); color: var(--ink-2); font-variant-numeric: tabular-nums; }
.art-row h2 { font-size: 21px; line-height: 1.3; }
.art-row h2 a { text-decoration: none; }
.art-row h2 a:hover { color: var(--acc); text-decoration: underline; }
.art-row p { color: var(--ink-2); margin: 8px 0 0; font-size: 15px; max-width: 40em; }
.art-empty { color: var(--ink-2); margin: 40px 0 0; padding-top: 22px; border-top: 1px solid var(--line); }

.art-head .k { margin: 0 0 14px; }
.art-head .k a { color: var(--ink-2); text-decoration: none; }
.art-head .k a:hover { color: var(--acc); }
.lede { margin: 28px 0 0; padding: 2px 0 2px 20px; border-left: 2px solid var(--acc); font-size: 19px; line-height: 1.55; }
.lede p { margin: 0; }
.toc { margin: 36px 0 0; padding: 14px 0 16px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.toc .k { margin: 0; }
.toc ol { margin: 8px 0 0; padding: 0; list-style: none; columns: 2; column-gap: 32px; font-size: 14px; line-height: 1.4; }
.toc li { padding: 3px 0; break-inside: avoid; }
.toc a { color: var(--ink-2); text-decoration: none; }
.toc a:hover { color: var(--ink); }

.prose { font-size: 17px; line-height: 1.6; }
.prose h2 { font-size: 24px; line-height: 1.25; margin: 48px 0 14px; padding-top: 18px; border-top: 1px solid var(--line-2); }
.prose > h2:first-child { margin-top: 40px; padding-top: 0; border-top: 0; }   /* the Contents block already draws a rule */
.prose h3 { font-size: 18px; line-height: 1.3; margin: 32px 0 10px; }
.prose p { margin: 0 0 18px; }
.prose ul, .prose ol { margin: 0 0 18px; padding-left: 22px; }
.prose li { margin: 6px 0; }
.prose li::marker { color: var(--ink-3); }
.prose strong { font-weight: 600; }
.prose code { font: .88em var(--mono); background: var(--bg-2); padding: 1px 3px; border-radius: 2px; }
.prose pre { background: var(--bg-2); border: 1px solid var(--line); padding: 14px 16px; overflow-x: auto; font: 13px/1.5 var(--mono); margin: 0 0 18px; }
.prose pre code { background: none; padding: 0; font: inherit; }
.prose blockquote { margin: 0 0 18px; padding: 2px 0 2px 18px; border-left: 2px solid var(--line-2); color: var(--ink-2); }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }
.prose img { max-width: 100%; height: auto; }
.prose a:hover { color: var(--acc); }
/* tables: the result page's raw-measurement readout. Mono, numbers right-aligned, hairlines. */
.tbl { max-width: none; overflow-x: auto; margin: 4px 0 24px; }
.tbl table { min-width: min(680px, 100%); border-collapse: collapse; font: 13px/1.45 var(--mono); font-variant-numeric: tabular-nums; }
.tbl th, .tbl td { text-align: right; padding: 7px 12px; border-bottom: 1px solid var(--line); font-weight: 400; vertical-align: top; }
.tbl td { white-space: nowrap; }
.tbl th { color: var(--ink-3); border-bottom-color: var(--line-2); }
.tbl .nb { white-space: nowrap; }
.tbl th:first-child, .tbl td:first-child { text-align: left; padding-left: 0; }
.tbl th:last-child, .tbl td:last-child { padding-right: 0; }
.tbl td:first-child { color: var(--ink-2); }
.tbl strong { color: var(--acc); font-weight: 500; }
.art-cta { margin-top: 56px; }

/* ── responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .home { grid-template-columns: 1fr; gap: 40px 0; padding-top: 36px; }
  .intro h1 { max-width: none; }
  .spec { margin-top: 24px; }
}
@media (max-width: 640px) {
  :root { --gutter: 16px; }
  .brand { font-size: 17px; }
  .tag-x { display: none; }
  .foot-in { grid-template-columns: 1fr; }
  .spec div { grid-template-columns: 72px 1fr; gap: 12px; }
  .step { grid-template-columns: 1fr; gap: 8px; }
  .step-l, .drop, .submit { grid-column: 1; }
  .drop { padding: 24px 18px; min-height: 0; }
  .submit .btn { width: 100%; }
  .score { grid-template-columns: 1fr; gap: 16px; padding-top: 28px; }
  .score-txt { padding-bottom: 0; }
  .subs { grid-template-columns: 1fr; }
  .sect { margin-top: 44px; }
  .concern { grid-template-columns: 1fr; gap: 6px; }
  .problem { grid-template-columns: 32px 1fr; }
  .lost { grid-column: 2; grid-row: auto; text-align: left; }
  .where { grid-column: 2; }
  .why { grid-column: 2; }
  .cta { grid-template-columns: 1fr; gap: 14px; }
  .cta .btn { width: 100%; }
  .share { grid-template-columns: 1fr; }
  .share-side { justify-items: stretch; }
  .share-side .btn { width: 100%; }
  .top-in { gap: 12px; }
  .nav { padding-left: 12px; }
  .arts, .art { padding-top: 36px; }
  .art-row { grid-template-columns: 1fr; gap: 6px; }
  .art-meta { display: flex; gap: 14px; padding-top: 0; }
  .art-row h2 { font-size: 19px; }
  .lede { font-size: 17px; padding-left: 16px; }
  .toc ol { columns: 1; }
  .prose { font-size: 16px; }
  .prose h2 { font-size: 22px; margin-top: 40px; }
  .tbl th, .tbl td { padding: 6px 10px; }
}
@media (prefers-reduced-motion: reduce) {
  .bar i, .meter i { animation: none; }
  .meter i { left: 0; width: 100%; }
}