/* Helix Desk. Layout: an instrument panel read left to right; one dial in the hero, hairline-ruled panels below, flat, no shadows. */
:root {
  --bg: #F4F6F7;
  --surface: #FFFFFF;
  --sunk: #ECEEEF;
  --ink: #16191B;
  --body: #3E3E3E;
  --muted: #5B666C;
  --hair: #D8DADB;
  --steel: #2C6988;
  --slate: #4A768B;
  --on-steel: #FFFFFF;
  --aog: #C2553D;
  --caution: #B0792B;
  --live: #2F8257;
  --mk-word: #0E1C22;
  --mk-deep: #005A78;
  --mk-tick: #0A9BC4;
  --mk-ring: #CBD6DB;
  --dl-deep: #005A78;
  --dl-tick: #0A9BC4;
  --dl-ring: #CBD6DB;
  --display: "Saira Semi Condensed", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --text: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --wrap: 1400px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0E1418; --surface: #152027; --sunk: #111A1F; --ink: #F2F5F7; --body: #DCE3E7; --muted: #A3B2BA;
    --hair: #2B3C46; --steel: #8CC0DA; --slate: #A9D2E6; --on-steel: #0E1418; --aog: #F29B84; --caution: #EBB877; --live: #45DE95;
    --mk-word: #FFFFFF; --mk-deep: #FFFFFF; --mk-tick: #FFFFFF; --mk-ring: #FFFFFF;
    --dl-deep: #8FE3F5; --dl-tick: #37B5D6; --dl-ring: #1E5C70;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0E1418; --surface: #152027; --sunk: #111A1F; --ink: #F2F5F7; --body: #DCE3E7; --muted: #A3B2BA;
  --hair: #2B3C46; --steel: #8CC0DA; --slate: #A9D2E6; --on-steel: #0E1418; --aog: #F29B84; --caution: #EBB877; --live: #45DE95;
  --mk-word: #FFFFFF; --mk-deep: #FFFFFF; --mk-tick: #FFFFFF; --mk-ring: #FFFFFF;
    --dl-deep: #8FE3F5; --dl-tick: #37B5D6; --dl-ring: #1E5C70;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--body); font: 400 16px/1.6 var(--text); }
a { color: var(--steel); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--steel); outline-offset: 3px; border-radius: 4px; }
img, svg { max-width: 100%; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding-inline: clamp(16px, 5vw, 64px); }
.eyebrow { font: 500 12px/1.2 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--slate); margin: 0; }
h1, h2, h3 { font-family: var(--display); color: var(--ink); text-wrap: balance; margin: 0; }
h1 { font-weight: 300; font-size: clamp(40px, 5.6vw, 88px); line-height: 1.02; letter-spacing: -.01em; }
h1 b { font-weight: 600; }
h2 { font-weight: 400; font-size: clamp(30px, 3.8vw, 46px); line-height: 1.08; }
h3 { font-weight: 600; font-size: 21px; line-height: 1.2; }
p { margin: 0; }
.lede { font-size: clamp(17px, 1.6vw, 19px); line-height: 1.6; color: var(--body); max-width: 36em; }
.mono { font-family: var(--mono); }

/* top bar */
.bar { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 10; background: var(--bg); border-bottom: 1px solid var(--hair); }
.bar .wrap { display: flex; align-items: center; gap: 24px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand svg { height: 30px; width: auto; display: block; }
.brand .aero { font: 500 13px/1 var(--mono); letter-spacing: .2em; color: var(--slate); padding-left: 10px; border-left: 1px solid var(--hair); }
.nav { display: flex; gap: 22px; margin-left: auto; align-items: center; flex-wrap: wrap; }
.nav a { color: var(--body); text-decoration: none; font-size: 15px; }
.nav a:hover { color: var(--steel); }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 18px; border-radius: 8px; background: var(--steel); color: var(--on-steel); text-decoration: none; font-weight: 600; font-size: 15px; border: 1px solid var(--steel); cursor: pointer; }
.btn.ghost { background: transparent; color: var(--steel); }
.nav .btn { padding: 8px 14px; color: var(--on-steel); }
@media (max-width: 760px) { .nav a:not(.btn) { display: none; } }

/* hero */
.hero { padding-block: clamp(48px, 8vw, 104px) clamp(40px, 6vw, 80px); }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero .copy { display: grid; gap: 24px; min-width: 0; }
.hero .ctas { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 6px; }
.dial { width: 100%; max-width: 600px; justify-self: center; aspect-ratio: 1 / 1; }
.dial text { font-family: var(--mono); }
@media (max-width: 860px) { .hero .wrap { grid-template-columns: 1fr; } .dial { max-width: 400px; } }

/* ribbon of real trade terms */
.ribbon { border-block: 1px solid var(--hair); background: var(--surface); }
.ribbon .wrap { display: flex; flex-wrap: wrap; gap: 10px 28px; padding-block: 18px; align-items: center; }
.ribbon span { font: 500 13px/1.3 var(--mono); letter-spacing: .06em; color: var(--muted); white-space: nowrap; }
.ribbon span:first-child { color: var(--slate); }

/* sections */
section.block { padding-block: clamp(64px, 9vw, 120px); }
.head { display: grid; gap: 14px; max-width: 760px; margin-bottom: clamp(32px, 4vw, 52px); }

/* modules */
.modules { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; border: 1px solid var(--hair); border-radius: 14px; background: var(--hair); overflow: hidden; }
.module { padding: 28px; display: grid; gap: 14px; align-content: start; min-width: 0; background: var(--surface); }
.module ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.module li { padding-left: 16px; position: relative; font-size: 15px; }
.module li::before { content: ""; position: absolute; left: 0; top: .72em; width: 7px; height: 1px; background: var(--slate); }
.state { font: 500 11px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; display: inline-flex; align-items: center; gap: 8px; color: var(--muted); }
.state::before { content: ""; width: 8px; height: 8px; border-radius: 50%; border: 1.5px solid currentColor; }
.state.live { color: var(--live); }
.state.live::before { background: currentColor; }
@media (max-width: 900px) { .modules { grid-template-columns: 1fr; } }

/* the request-to-cash rail */
.rail { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); border-top: 2px solid var(--steel); }
.rail li { padding: 18px 14px 0 0; display: grid; gap: 8px; align-content: start; position: relative; min-width: 0; }
.rail li::before { content: ""; position: absolute; top: -7px; left: 0; width: 12px; height: 12px; border-radius: 50%; background: var(--bg); border: 2px solid var(--steel); }
.rail .n { font: 500 12px/1 var(--mono); color: var(--slate); letter-spacing: .1em; }
.rail b { font-family: var(--display); font-weight: 600; font-size: 18px; color: var(--ink); }
.rail p { font-size: 14px; line-height: 1.5; color: var(--muted); }
@media (max-width: 980px) {
  .rail { grid-template-columns: 1fr; border-top: 0; border-left: 2px solid var(--steel); margin-left: 6px; gap: 22px; }
  .rail li { padding: 0 0 0 22px; }
  .rail li::before { top: 2px; left: -7px; }
}

/* agents */
.agents-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 80px); align-items: start; }
@media (max-width: 900px) { .agents-grid { grid-template-columns: 1fr; } }
.jobs { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.jobs li { display: grid; gap: 2px; padding-left: 18px; border-left: 2px solid var(--hair); }
.jobs b { color: var(--ink); font-weight: 600; }
.jobs span { color: var(--muted); font-size: 15px; }
.fine { margin-top: 22px; font-size: 14px; color: var(--muted); max-width: 40em; }
.log { border: 1px solid var(--hair); border-radius: 14px; background: var(--surface); overflow: hidden; font-family: var(--mono); min-width: 0; }
.log-head { display: flex; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid var(--hair); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--slate); }
.log-head span + span { color: var(--muted); }
.log ol { list-style: none; margin: 0; padding: 8px 0; }
.log li { display: grid; grid-template-columns: 48px 86px minmax(0, 1fr); gap: 10px; padding: 11px 18px; font-size: 13px; line-height: 1.45; border-bottom: 1px dashed var(--hair); }
.log li:last-child { border-bottom: 0; }
.log time { color: var(--muted); font-variant-numeric: tabular-nums; }
.log em { font-style: normal; font-weight: 500; color: var(--steel); letter-spacing: .06em; }
.log em.warn { color: var(--aog); }
.log em.ok { color: var(--live); }
.log span { color: var(--body); min-width: 0; }
@media (max-width: 480px) { .log li { grid-template-columns: 44px minmax(0, 1fr); } .log li span { grid-column: 2; } }
.store { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-top: 32px; }
.store span { font-size: 14px; color: var(--muted); }

/* the app */
.app .wrap { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(32px, 6vw, 88px); align-items: center; }
@media (max-width: 900px) { .app .wrap { grid-template-columns: 1fr; } }
.phone { width: 300px; max-width: 100%; justify-self: center; border: 1px solid var(--hair); border-radius: 44px; padding: 12px; background: var(--surface); }
.screen { border-radius: 34px; background: var(--sunk); overflow: hidden; border: 1px solid var(--hair); }
.screen .top { display: flex; justify-content: space-between; padding: 14px 22px 4px; font: 600 12px/1 var(--text); color: var(--ink); }
.screen .title { padding: 10px 18px 6px; font: 700 22px/1.2 var(--text); color: var(--ink); background: var(--surface); }
.screen .hello { padding: 0 18px 10px; font-size: 12px; color: var(--muted); background: var(--surface); border-bottom: 1px solid var(--hair); }
.card { margin: 10px 10px 0; padding: 12px; border-radius: 12px; background: var(--surface); border: 1px solid var(--hair); display: grid; gap: 5px; }
.card .k { display: flex; justify-content: space-between; font: 500 9.5px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--slate); }
.card .k i { font-style: normal; color: var(--muted); letter-spacing: 0; text-transform: none; font-family: var(--text); font-size: 11px; }
.card .t { font: 700 13.5px/1.3 var(--text); color: var(--ink); }
.card .m { display: flex; gap: 6px; align-items: center; font: 700 14px/1 var(--text); color: var(--steel); }
.card .lvl { font: 600 10px/1 var(--text); color: var(--slate); background: var(--sunk); border-radius: 4px; padding: 3px 5px; }
.card .row { display: grid; grid-template-columns: .6fr 1fr; gap: 6px; margin-top: 4px; }
.card .row span { border-radius: 8px; padding: 8px 4px; text-align: center; font: 600 11.5px/1 var(--text); border: 1px solid var(--hair); color: var(--slate); }
.card .row span.yes { background: var(--steel); color: var(--on-steel); border-color: var(--steel); }
.tabs { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 12px; padding: 9px 4px 14px; background: var(--surface); border-top: 1px solid var(--hair); }
.tabs span { text-align: center; font: 500 9.5px/1.4 var(--text); color: var(--muted); }
.tabs span.on { color: var(--steel); }
.tabs span::before { content: ""; display: block; width: 16px; height: 16px; margin: 0 auto 3px; border-radius: 5px; border: 1.5px solid currentColor; }
.illus { text-align: center; font: 500 11px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-top: 12px; }
.features { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 36px; margin-top: 32px; }
.features div { display: grid; gap: 6px; align-content: start; border-top: 1px solid var(--hair); padding-top: 16px; min-width: 0; }
.features p { font-size: 15px; color: var(--muted); }
@media (max-width: 560px) { .features { grid-template-columns: 1fr; } }

/* control */
.control { background: var(--surface); border-block: 1px solid var(--hair); }
.control .grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 88px); align-items: start; }
@media (max-width: 900px) { .control .grid { grid-template-columns: 1fr; } }
.ladder { display: grid; gap: 10px; }
.ladder div { display: grid; grid-template-columns: 48px minmax(0, 1fr); align-items: center; gap: 14px; }
.ladder b { font: 600 15px/1 var(--mono); color: var(--steel); }
.ladder span { display: block; padding: 13px 16px; border: 1px solid var(--hair); border-radius: 8px; font-size: 15px; color: var(--body); background: var(--bg); }
.ladder div:nth-child(1) span { margin-right: 0; }
.ladder div:nth-child(2) span { margin-right: 10%; }
.ladder div:nth-child(3) span { margin-right: 20%; }
.ladder div:nth-child(4) span { margin-right: 30%; }
.ladder small { display: block; color: var(--muted); font-size: 13px; }
.rules { display: grid; gap: 26px; }
.rules div { display: grid; gap: 6px; }
.rules p { color: var(--muted); }

/* contact */
.contact .box { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px 40px; align-items: end; border: 1px solid var(--hair); border-radius: 14px; padding: clamp(28px, 4vw, 48px); background: var(--surface); }
.contact .mail { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.contact .mail code { font: 500 clamp(17px, 2vw, 22px)/1.2 var(--mono); color: var(--ink); user-select: all; }
@media (max-width: 760px) { .contact .box { grid-template-columns: 1fr; } }

/* footer */
footer { border-top: 1px solid var(--hair); padding-block: 36px 48px; font-size: 14px; color: var(--muted); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 32px; align-items: center; justify-content: space-between; }
footer nav { display: flex; gap: 22px; flex-wrap: wrap; }
footer a { color: var(--muted); }

/* legal and support pages */
.doc { padding-block: clamp(48px, 7vw, 88px); }
.doc .wrap { max-width: 820px; }
.doc header { display: grid; gap: 12px; padding-bottom: 28px; margin-bottom: 8px; border-bottom: 1px solid var(--hair); }
.doc h1 { font-size: clamp(36px, 5vw, 54px); }
.doc h2 { font-size: 24px; font-weight: 600; margin-top: 40px; margin-bottom: 10px; }
.doc p, .doc li { max-width: 68ch; }
.doc p + p, .doc .tbl + p { margin-top: 12px; }
.doc ul { padding-left: 20px; margin: 10px 0 0; display: grid; gap: 6px; }
.doc .meta { font: 500 13px/1.4 var(--mono); color: var(--muted); }
.doc table { border-collapse: collapse; width: 100%; font-size: 15px; margin-top: 12px; }
.doc .tbl { overflow-x: auto; }
.doc th, .doc td { text-align: left; padding: 10px 12px 10px 0; border-bottom: 1px solid var(--hair); vertical-align: top; }
.doc th { font: 500 12px/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--slate); }
.faq details { border-bottom: 1px solid var(--hair); padding-block: 16px; }
.faq summary { cursor: pointer; font-weight: 600; color: var(--ink); list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::after { content: "+"; font: 400 20px/1 var(--mono); color: var(--slate); }
.faq details[open] summary::after { content: "\2212"; }
.faq details p { margin-top: 10px; color: var(--body); }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .needle { animation: none !important; } }