:root {
  --ink: #0d1d2a;
  --ink-soft: #24394a;
  --muted: #637586;
  --paper: #fbfcfd;
  --white: #ffffff;
  --line: #dfe7ee;
  --violet: #5945d6;
  --violet-dark: #4635b7;
  --mint: #83e2c3;
  --night: #111d29;
  --night-2: #172837;
  --shadow: rgba(29, 40, 70, .22) 0 30px 60px -34px, rgba(0, 0, 0, .10) 0 18px 36px -24px;
  --shell: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Source Sans 3", ui-sans-serif, system-ui, sans-serif;
  font-size: 17px;
  font-weight: 300;
  line-height: 1.55;
  font-feature-settings: "ss01";
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
:focus-visible { outline: 3px solid var(--mint); outline-offset: 3px; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 100; padding: 10px 14px; background: var(--night); color: white; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.shell { width: min(calc(100% - 48px), var(--shell)); margin-inline: auto; }

.site-header { position: absolute; top: 0; left: 0; right: 0; z-index: 20; color: var(--ink); }
.nav-wrap { min-height: 84px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(13, 29, 42, .12); }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-weight: 500; letter-spacing: -.2px; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; background: var(--night); color: white; border-radius: 5px; font: 500 11px/1 "Source Code Pro", monospace; letter-spacing: -.7px; }
nav { display: flex; align-items: center; gap: 29px; }
nav a { text-decoration: none; font-size: 15px; font-weight: 400; }
nav a:not(.nav-cta):hover { color: var(--violet); }
.nav-cta { padding: 9px 15px; color: white; background: var(--violet); border-radius: 5px; }
.nav-cta:hover { background: var(--violet-dark); }
.menu-toggle { display: none; border: 1px solid var(--line); border-radius: 5px; background: white; padding: 8px 12px; color: var(--ink); }

.hero { position: relative; overflow: hidden; padding: 180px 0 104px; background: linear-gradient(118deg, #fff 0%, #f7f9fc 64%, #f0efff 100%); }
.hero::before { content: ""; position: absolute; inset: 84px auto auto 65%; width: 680px; height: 680px; background: radial-gradient(circle, rgba(89,69,214,.11), transparent 67%); pointer-events: none; }
.hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, 1.03fr) minmax(420px, .97fr); align-items: center; gap: 76px; }
.eyebrow { margin: 0 0 21px; color: var(--violet); font: 500 12px/1.2 "Source Code Pro", monospace; letter-spacing: .09em; }
.status-dot { display: inline-block; width: 7px; height: 7px; margin-right: 8px; border-radius: 50%; background: #20a878; box-shadow: 0 0 0 4px rgba(32,168,120,.12); }
h1, h2, h3, p { text-wrap: pretty; }
h1 { max-width: 680px; margin: 0; font-size: clamp(50px, 5.2vw, 76px); font-weight: 300; line-height: .99; letter-spacing: -2.7px; }
h1 em { color: var(--violet); font-style: normal; }
.hero-lede { max-width: 590px; margin: 31px 0 0; color: var(--ink-soft); font-size: 21px; line-height: 1.46; }
.hero-actions { display: flex; align-items: center; gap: 27px; margin-top: 37px; }
.button { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; border: 0; border-radius: 5px; padding: 10px 19px; text-decoration: none; font-weight: 500; cursor: pointer; transition: background .18s ease, transform .18s ease; }
.button:hover { transform: translateY(-1px); }
.button-primary { background: var(--violet); color: white; box-shadow: 0 12px 24px -14px rgba(70,53,183,.9); }
.button-primary:hover { background: var(--violet-dark); }
.text-link { font-weight: 500; color: var(--ink); text-decoration: none; border-bottom: 1px solid rgba(13,29,42,.25); }
.text-link span { margin-left: 5px; }
.microcopy { margin: 22px 0 0; color: var(--muted); font-size: 13px; }

.operation-panel { background: var(--night); color: white; border-radius: 8px; box-shadow: var(--shadow); overflow: hidden; transform: translateY(12px); }
.panel-top, .panel-foot { display: flex; justify-content: space-between; padding: 16px 19px; font: 500 10px/1.4 "Source Code Pro", monospace; letter-spacing: .08em; }
.panel-top { color: #a9b8c4; border-bottom: 1px solid rgba(255,255,255,.1); }
.live-label { color: var(--mint); }
.live-label i { display: inline-block; width: 6px; height: 6px; margin-right: 6px; background: var(--mint); border-radius: 50%; }
.run-list { list-style: none; padding: 0; margin: 0; }
.run-list li { min-height: 82px; display: grid; grid-template-columns: 32px 1fr auto; gap: 14px; align-items: center; padding: 17px 19px; color: #91a2b0; border-bottom: 1px solid rgba(255,255,255,.08); }
.run-list li.complete, .run-list li.active { color: white; }
.run-list li.active { background: var(--night-2); box-shadow: inset 3px 0 0 var(--mint); }
.run-index, .run-state { font: 500 10px/1 "Source Code Pro", monospace; }
.complete .run-index { color: var(--mint); }
.run-list strong { display: block; font-size: 15px; font-weight: 500; }
.run-list small { display: block; margin-top: 3px; color: #91a2b0; font-size: 12px; }
.run-state { color: #718492; }
.complete .run-state { color: var(--mint); }
.active .run-state { color: #ffd17c; }
.panel-foot { align-items: end; background: #0b1620; color: #738897; }
.panel-foot strong { color: white; font: 400 12px/1.4 "Source Code Pro", monospace; letter-spacing: 0; }

.proof-strip { background: white; border-block: 1px solid var(--line); }
.principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.principle-grid p { position: relative; display: grid; grid-template-columns: 32px 1fr; margin: 0; padding: 28px 32px; }
.principle-grid p + p { border-left: 1px solid var(--line); }
.principle-grid span { grid-row: 1 / 3; color: var(--violet); font: 500 10px/1.7 "Source Code Pro", monospace; }
.principle-grid strong { font-size: 16px; font-weight: 500; }
.principle-grid small { color: var(--muted); font-size: 13px; }

.section { padding: 112px 0; }
.section-heading { display: grid; grid-template-columns: 1fr 1fr; column-gap: 70px; margin-bottom: 62px; }
.section-heading .eyebrow { grid-column: 1 / -1; }
h2 { margin: 0; font-size: clamp(38px, 4vw, 55px); font-weight: 300; line-height: 1.06; letter-spacing: -1.6px; }
.section-heading > p:last-child { align-self: end; max-width: 500px; margin: 0; color: var(--muted); font-size: 19px; }
.capability-list { border-top: 1px solid var(--ink); }
.capability-list article { display: grid; grid-template-columns: 70px 1fr minmax(240px, .72fr); gap: 27px; align-items: center; padding: 31px 0; border-bottom: 1px solid var(--line); transition: padding .2s ease, background .2s ease; }
.capability-list article:hover { padding-inline: 14px; background: white; }
.cap-number { color: var(--violet); font: 500 11px/1 "Source Code Pro", monospace; }
.capability-list h3 { margin: 0 0 4px; font-size: 25px; font-weight: 400; letter-spacing: -.3px; }
.capability-list p { max-width: 590px; margin: 0; color: var(--muted); }
.capability-list .output { color: var(--ink-soft); font-size: 14px; }
.output span { display: block; margin-bottom: 4px; color: var(--muted); font: 500 9px/1.2 "Source Code Pro", monospace; letter-spacing: .08em; }

.dark-section { color: white; background: var(--night); }
.method-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 100px; }
.dark-section .eyebrow { color: var(--mint); }
.method-intro { position: sticky; top: 40px; align-self: start; }
.method-intro > p:last-child { max-width: 430px; margin-top: 27px; color: #a7b5c0; font-size: 19px; }
.method-steps { margin: 0; padding: 0; list-style: none; counter-reset: methods; }
.method-steps li { padding: 7px 0 35px 40px; border-left: 1px solid rgba(255,255,255,.18); }
.method-steps li + li { padding-top: 35px; border-top: 1px solid rgba(255,255,255,.11); }
.method-steps span { color: var(--mint); font: 500 10px/1.3 "Source Code Pro", monospace; letter-spacing: .08em; }
.method-steps h3 { margin: 12px 0 8px; font-size: 28px; font-weight: 300; }
.method-steps p { max-width: 550px; margin: 0; color: #a7b5c0; }

.fit-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 100px; }
.fit-copy { padding-top: 36px; }
.fit-lede { max-width: 630px; margin: 0 0 44px; color: var(--ink-soft); font-size: 21px; }
.fit-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; padding-top: 30px; border-top: 1px solid var(--ink); }
.fit-columns h3 { margin: 0 0 17px; font-size: 15px; font-weight: 600; }
.fit-columns ul { margin: 0; padding: 0; list-style: none; }
.fit-columns li { position: relative; padding: 9px 0 9px 20px; color: var(--muted); border-bottom: 1px solid var(--line); }
.fit-columns li::before { content: ""; position: absolute; left: 0; top: 19px; width: 6px; height: 6px; border-radius: 50%; background: var(--violet); }
.fit-columns div:last-child li::before { background: #91a0ac; }

.scope-section { padding: 100px 0; color: white; background: var(--violet); }
.scope-section .eyebrow { color: #d9d4ff; }
.scope-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; align-items: center; }
.scope-box { padding: 35px; background: rgba(23, 16, 78, .35); border: 1px solid rgba(255,255,255,.2); border-radius: 8px; }
.scope-box > p:first-child { margin-top: 0; color: #e5e1ff; }
.scope-box ol { margin: 24px 0 29px; padding: 0; list-style: none; }
.scope-box li { display: grid; grid-template-columns: 34px 1fr; padding: 12px 0; border-top: 1px solid rgba(255,255,255,.16); }
.scope-box li span { font: 500 10px/1.8 "Source Code Pro", monospace; color: var(--mint); }
.button-light { background: white; color: var(--violet-dark); }
.button-light:hover { background: #f3f1ff; }
.preview-note { margin: 17px 0 0; color: #d9d4ff; font-size: 12px; }

footer { padding: 45px 0; color: #9aabb8; background: #09131c; }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr auto; gap: 50px; align-items: end; }
.footer-brand { color: white; }
footer p { margin: 8px 0 0; font-size: 13px; }
.copyright { white-space: nowrap; }

@media (max-width: 900px) {
  .hero-grid, .method-grid, .fit-grid, .scope-grid { grid-template-columns: 1fr; gap: 58px; }
  .hero { padding-top: 150px; }
  .hero-copy { max-width: 680px; }
  .operation-panel { max-width: 620px; }
  .section-heading { grid-template-columns: 1fr; }
  .section-heading > p:last-child { margin-top: 25px; }
  .capability-list article { grid-template-columns: 48px 1fr; }
  .capability-list .output { grid-column: 2; }
  .method-intro { position: static; }
  .fit-copy { padding-top: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .copyright { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  .shell { width: min(calc(100% - 32px), var(--shell)); }
  .nav-wrap { min-height: 70px; }
  .menu-toggle { display: block; min-height: 44px; }
  nav { display: none; position: absolute; top: 70px; left: 16px; right: 16px; padding: 12px; flex-direction: column; align-items: stretch; gap: 0; background: white; border: 1px solid var(--line); border-radius: 7px; box-shadow: var(--shadow); }
  nav.open { display: flex; }
  nav a { min-height: 46px; display: flex; align-items: center; padding: 0 12px; }
  .nav-cta { margin-top: 6px; justify-content: center; }
  .hero { padding: 125px 0 70px; }
  h1 { font-size: 47px; letter-spacing: -1.8px; }
  .hero-lede { font-size: 18px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 18px; }
  .operation-panel { transform: none; }
  .run-list li { grid-template-columns: 27px 1fr; }
  .run-state { display: none; }
  .principle-grid { grid-template-columns: 1fr; padding-block: 8px; }
  .principle-grid p { padding: 20px 5px; }
  .principle-grid p + p { border-left: 0; border-top: 1px solid var(--line); }
  .section { padding: 78px 0; }
  .section-heading { margin-bottom: 42px; }
  h2 { font-size: 39px; }
  .capability-list article { gap: 12px; padding: 25px 0; }
  .capability-list article:hover { padding-inline: 0; background: transparent; }
  .method-steps li { padding-left: 20px; }
  .fit-columns { grid-template-columns: 1fr; gap: 35px; }
  .scope-section { padding: 75px 0; }
  .scope-box { padding: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 25px; }
  .copyright { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}