/* Mach site. One stylesheet, system fonts, no motion. Colours are the app's own (App/Resources/thread.html). */
:root {
  color-scheme: light dark;
  --bg: #ffffff; --text: #1b1b1f; --dim: #6e6e78; --faint: #9a9aa5; --line: #e7e7ec; --card: #f6f6f8;
  --accent: #5b5bd6; --chip: #efeff3; --ink: #0d0d10; --on-ink: #f4f4f6; --plate: #0e0e12;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Inter, system-ui, sans-serif;
  --display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Inter, system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --gutter: 28px; --rail: 208px;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #111114; --text: #ececf1; --dim: #9c9ca8; --faint: #6c6c78; --line: #26262c; --card: #1a1a1f;
    --accent: #9d9dff; --chip: #222228; --ink: #ececf1; --on-ink: #111114; --plate: #0e0e12; }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-wrap: break-word; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: underline; text-decoration-color: var(--faint); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-color: currentColor; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }
::selection { background: var(--accent); color: var(--bg); }
h1, h2, h3, p, ul, ol, dl, dd, figure, table { margin: 0; padding: 0; }
ul, ol { list-style: none; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: var(--gutter); top: 10px; background: var(--bg); padding: 6px 10px; z-index: 5; }

/* ---------- top bar ---------- */
.bar { border-bottom: 1px solid var(--line); }
.bar .wrap { display: flex; align-items: center; justify-content: space-between; height: 56px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 650; letter-spacing: -0.01em; text-decoration: none; }
.brand img { width: 26px; height: 26px; }
.brand small { font-weight: 400; color: var(--faint); font-size: 13px; letter-spacing: 0; }
.nav { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.nav a { color: var(--dim); text-decoration: none; display: inline-flex; align-items: center; gap: 7px; padding: 6px 0; }
.nav a:hover, .nav a[aria-current] { color: var(--text); }
.nav a[aria-current] { box-shadow: 0 17px 0 -15px var(--accent); }
kbd { font: 500 11px/1 var(--mono); color: var(--dim); background: var(--chip); border-radius: 4px; padding: 4px 5px 3px; min-width: 19px;
  display: inline-block; text-align: center; box-shadow: inset 0 -1px 0 var(--line); }

/* ---------- hero ---------- */
.hero { padding: 84px 0 0; }
.eyebrow { font: 500 12.5px/1.4 var(--mono); color: var(--dim); letter-spacing: 0.01em; }
.eyebrow b { color: var(--text); font-weight: 500; }
h1.big { font: 680 clamp(46px, 9.6vw, 124px)/0.94 var(--display); letter-spacing: -0.046em; margin: 22px 0 0 -0.04em; text-wrap: balance; }
h1.big span { color: var(--faint); }
.lede { max-width: 33em; font-size: clamp(17px, 1.55vw, 20px); line-height: 1.5; color: var(--dim); margin-top: 30px; }
.lede strong { color: var(--text); font-weight: 500; }
.cta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 14px; margin-top: 34px; }
.btn { display: inline-flex; align-items: center; gap: 10px; height: 46px; padding: 0 18px 0 16px; border-radius: 9px; font-weight: 600; font-size: 15.5px;
  text-decoration: none; background: var(--ink); color: var(--on-ink); }
.btn:hover { background: var(--accent); color: var(--bg); }
.btn svg { width: 15px; height: 15px; }
.btn.ghost { background: none; color: var(--text); box-shadow: inset 0 0 0 1px var(--line); font-weight: 500; }
.btn.ghost:hover { box-shadow: inset 0 0 0 1px var(--text); background: none; color: var(--text); }
.soon { display: inline-flex; align-items: center; height: 46px; padding: 0 16px; border-radius: 9px; font-size: 15px; color: var(--dim);
  border: 1px dashed var(--line); }
.fine { font-size: 13.5px; color: var(--faint); margin-top: 16px; max-width: 46em; }
.fine a { color: var(--dim); }

.plate { margin-top: 64px; background: var(--plate); border-radius: 14px; overflow: hidden; box-shadow: 0 0 0 1px var(--line); }
.plate img { width: 100%; }

/* ---------- section rail: label left, content right, like a list row ---------- */
.sec { border-top: 1px solid var(--line); margin-top: 96px; padding-top: 26px; display: grid; grid-template-columns: var(--rail) minmax(0, 1fr); column-gap: 32px; }
.sec > .tag { font: 500 12.5px/1.5 var(--mono); color: var(--dim); position: relative; padding-top: 5px; }
.sec > .tag::before { content: ""; position: absolute; left: 0; top: -27px; width: 44px; height: 2px; background: var(--accent); }
.sec > .tag i { font-style: normal; color: var(--faint); margin-right: 10px; }
.sec h2 { font: 650 clamp(27px, 3.3vw, 42px)/1.08 var(--display); letter-spacing: -0.032em; max-width: 19em; text-wrap: balance; }
.sec .sub { color: var(--dim); max-width: 38em; margin-top: 14px; font-size: 17px; }

/* ---------- measurements ---------- */
.bench { margin-top: 40px; }
.scale { display: grid; grid-template-columns: minmax(0, 272px) minmax(0, 1fr) 84px; column-gap: 20px; font: 500 11.5px/1 var(--mono); color: var(--faint); height: 26px; }
.scale .ticks { position: relative; grid-column: 2; }
.scale .ticks span { position: absolute; top: 0; white-space: nowrap; padding-left: 6px; border-left: 1px solid var(--faint); height: 26px; }
.row { display: grid; grid-template-columns: minmax(0, 272px) minmax(0, 1fr) 84px; column-gap: 20px; align-items: center; border-top: 1px solid var(--line); min-height: 50px; }
.row:last-child { border-bottom: 1px solid var(--line); }
.row .what { font-size: 15.5px; padding: 12px 0; }
.row .track { position: relative; align-self: stretch;
  background:
    linear-gradient(var(--line), var(--line)) 16.6% 0 / 1px 100% no-repeat,
    linear-gradient(var(--line), var(--line)) 33.4% 0 / 1px 100% no-repeat; }
.row .track b { position: absolute; left: 0; top: 50%; height: 10px; margin-top: -5px; min-width: 3px; background: var(--accent); border-radius: 0 2px 2px 0; }
.row .val { font: 600 17px/1 var(--mono); text-align: right; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.row .val small { font: 500 12px/1 var(--mono); color: var(--dim); margin-left: 3px; letter-spacing: 0; }
.also { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 32px; margin-top: 44px; }
.also div { border-top: 1px solid var(--text); padding-top: 14px; }
.also p.n { font: 650 clamp(36px, 4.4vw, 58px)/1 var(--display); letter-spacing: -0.045em; font-variant-numeric: tabular-nums; }
.also p.n small { font-size: 0.42em; font-weight: 600; letter-spacing: -0.01em; color: var(--dim); margin-left: 4px; }
.also p.n { color: var(--text); max-width: none; margin-top: 0; }
.also p { color: var(--dim); font-size: 14.5px; margin-top: 8px; max-width: 20em; }
.note { color: var(--faint); font-size: 13.5px; margin-top: 22px; }
.note a { color: var(--dim); }

/* ---------- ledger: the data section and the features, drawn as inbox rows ---------- */
.ledger { margin-top: 36px; border-bottom: 1px solid var(--line); }
.ledger li { display: grid; grid-template-columns: minmax(0, 15.5em) minmax(0, 1fr); column-gap: 28px; padding: 15px 0 16px; border-top: 1px solid var(--line); }
.ledger b { font-weight: 600; font-size: 16px; }
.ledger span { color: var(--dim); font-size: 16px; }
.ledger code { font: 500 12.5px/1.4 var(--mono); color: var(--faint); display: block; margin-top: 3px; overflow-wrap: anywhere; }
.pledge { margin-top: 28px; padding: 18px 20px; background: var(--card); border-radius: 10px; font-size: 15.5px; color: var(--dim); max-width: 50em; }
.pledge strong { color: var(--text); font-weight: 600; }
.more { margin-top: 22px; font-size: 16px; }
.more a { font-weight: 600; text-decoration-color: var(--accent); }

.keys { display: grid; grid-template-columns: repeat(auto-fill, minmax(196px, 1fr)); gap: 0 28px; margin-top: 34px; }
.keys li { display: flex; align-items: center; justify-content: space-between; gap: 12px; border-top: 1px solid var(--line); height: 44px; font-size: 15px; color: var(--dim); }
.keys kbd { font-size: 12px; padding: 5px 6px 4px; min-width: 24px; color: var(--text); }
.keys span { display: inline-flex; gap: 4px; }

.get { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 36px; }
.get > div { border: 1px solid var(--line); border-radius: 12px; padding: 22px 22px 24px; }
.get h3 { font: 650 20px/1.2 var(--display); letter-spacing: -0.02em; }
.get p { color: var(--dim); font-size: 15px; margin-top: 8px; }
.get .cta { margin-top: 18px; }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line); margin-top: 110px; padding: 30px 0 56px; font-size: 14px; color: var(--dim); }
.foot .wrap { display: grid; grid-template-columns: var(--rail) minmax(0, 1fr); column-gap: 32px; row-gap: 14px; }
.foot .brand { font-size: 15px; color: var(--text); align-self: start; }
.foot nav { display: flex; flex-wrap: wrap; gap: 6px 22px; }
.foot nav a { text-decoration: none; color: var(--text); }
.foot nav a:hover { text-decoration: underline; }
.foot p { max-width: 54em; margin-top: 12px; }
.foot .tm { color: var(--faint); font-size: 13px; }

/* ---------- documents: privacy, terms, support ---------- */
.doc { padding-top: 72px; display: grid; grid-template-columns: var(--rail) minmax(0, 44em); column-gap: 32px; }
.doc > aside { font: 500 12.5px/1.5 var(--mono); color: var(--dim); }
.doc > aside ol { position: sticky; top: 24px; display: grid; gap: 7px; }
.doc > aside a { text-decoration: none; color: var(--dim); display: flex; gap: 10px; }
.doc > aside a:hover { color: var(--text); }
.doc > aside a i { font-style: normal; color: var(--faint); min-width: 1.6em; }
.doc h1 { font: 680 clamp(38px, 6vw, 68px)/1 var(--display); letter-spacing: -0.045em; margin-left: -0.03em; }
.doc .meta { font: 500 12.5px/1.6 var(--mono); color: var(--dim); margin-top: 18px; }
.doc .short { margin-top: 30px; font-size: clamp(18px, 1.7vw, 21px); line-height: 1.48; color: var(--text); padding-left: 18px; box-shadow: inset 2px 0 0 var(--accent); }
.doc section { margin-top: 56px; }
.doc h2 { font: 650 23px/1.2 var(--display); letter-spacing: -0.022em; display: flex; gap: 12px; align-items: baseline; scroll-margin-top: 20px; }
.doc h2 i { font: 500 12.5px/1 var(--mono); color: var(--faint); font-style: normal; letter-spacing: 0; }
.doc h3 { font: 600 16.5px/1.35 var(--sans); margin-top: 26px; }
.doc p { margin-top: 13px; color: var(--text); }
.doc p.q { color: var(--dim); }
.doc section ul { margin-top: 12px; }
.doc section ul li { position: relative; padding-left: 20px; margin-top: 8px; }
.doc section ul li::before { content: ""; position: absolute; left: 2px; top: 0.72em; width: 8px; height: 1px; background: var(--faint); }
.doc code { font: 500 0.86em/1.4 var(--mono); background: var(--chip); padding: 2px 5px; border-radius: 4px; overflow-wrap: anywhere; }
.doc strong { font-weight: 600; }
.doc .pledge { margin-top: 18px; color: var(--text); }
.tbl { margin-top: 20px; border-bottom: 1px solid var(--line); }
.tbl > div { display: grid; grid-template-columns: minmax(0, 13.5em) minmax(0, 1fr); column-gap: 24px; border-top: 1px solid var(--line); padding: 14px 0 15px; }
.tbl dt { font-weight: 600; }
.tbl dt code { display: block; margin-top: 6px; background: none; padding: 0; color: var(--faint); font-size: 12px; }
.tbl dd { color: var(--dim); }
.tbl dd b { color: var(--text); font-weight: 500; }
.faq { margin-top: 8px; }
.faq h3 { border-top: 1px solid var(--line); padding-top: 18px; margin-top: 22px; }
.contact { margin-top: 28px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.contact a { border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px 20px; text-decoration: none; }
.contact a:hover { border-color: var(--text); }
.contact b { display: block; font: 650 18px/1.25 var(--display); letter-spacing: -0.015em; overflow-wrap: anywhere; }
.contact span { display: block; color: var(--dim); font-size: 14.5px; margin-top: 6px; }

/* ---------- narrow ---------- */
@media (max-width: 900px) {
  :root { --gutter: 22px; }
  .sec, .doc, .foot .wrap { grid-template-columns: minmax(0, 1fr); }
  .sec { margin-top: 72px; }
  .sec > .tag { margin-bottom: 14px; padding-top: 0; }
  .doc { padding-top: 48px; }
  .doc > aside { display: none; }
  .also { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 18px; }
}
@media (max-width: 680px) {
  :root { --gutter: 18px; }
  .nav { gap: 16px; }
  .nav kbd, .brand small { display: none; }
  .hero { padding-top: 48px; }
  h1.big { margin-top: 18px; }
  .lede { margin-top: 22px; }
  .plate { margin-top: 44px; border-radius: 12px; }
  .scale { display: none; }
  .row { grid-template-columns: minmax(0, 1fr) auto; row-gap: 0; padding: 12px 0 13px; min-height: 0; }
  .row .what { padding: 0; grid-column: 1; }
  .row .val { grid-column: 2; grid-row: 1; }
  .row .track { grid-column: 1 / -1; grid-row: 2; height: 12px; margin-top: 9px; }
  .row .track b { height: 6px; margin-top: -3px; }
  .also { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .ledger li, .tbl > div { grid-template-columns: minmax(0, 1fr); row-gap: 4px; }
  .get, .contact { grid-template-columns: minmax(0, 1fr); }
  .btn, .soon { height: 48px; }
  .foot { margin-top: 80px; }
}
@media (max-width: 400px) {
  .nav { gap: 13px; font-size: 13.5px; }
  .nav .src { display: none; }
}
@media print { .bar, .foot nav, .doc > aside { display: none; } }

/* Bar lengths on a 0 to 50 ms scale. */
.ms-0-5 { width: 1%; } .ms-0-7 { width: 1.4%; } .ms-2 { width: 4%; } .ms-2-3 { width: 4.6%; } .ms-14 { width: 28%; } .ms-17 { width: 34%; } .ms-48 { width: 96%; }
.t-120 { left: 16.6%; } .t-60 { left: 33.4%; } .t-0 { left: 0; }