:root {
  --ground: #eef1f3; --paper: #ffffff; --ink: #14212c; --ink-2: #435361; --ink-3: #6b7a86;
  --rule: #d6dde2; --navy: #172a3a; --teal: #2f7d9c; --teal-ink: #ffffff; --teal-soft: #e1eef3;
  --band: #14212c; --band-ink: #e6edf2; --band-ink-2: #a9b8c3; --band-rule: #2a3b49; --band-teal: #7cc3dd;
  --field: #ffffff; --ok: #1f6b45; --err: #a3322a; --bar: rgba(238, 241, 243, 0.92);
  --logo-dark: block; --logo-light: none;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground: #10181f; --paper: #16212a; --ink: #e6edf2; --ink-2: #b1bfc9; --ink-3: #82929e;
    --rule: #26343f; --navy: #e6edf2; --teal: #7cc3dd; --teal-ink: #0d1a22; --teal-soft: #1b3441;
    --band: #0b1117; --band-ink: #e6edf2; --band-ink-2: #a9b8c3; --band-rule: #22303b; --band-teal: #7cc3dd;
    --field: #0f171d; --ok: #7fd1a3; --err: #f0968d; --bar: rgba(16, 24, 31, 0.92);
    --logo-dark: none; --logo-light: block;
  }
}
:root[data-theme="dark"] {
  --ground: #10181f; --paper: #16212a; --ink: #e6edf2; --ink-2: #b1bfc9; --ink-3: #82929e;
  --rule: #26343f; --navy: #e6edf2; --teal: #7cc3dd; --teal-ink: #0d1a22; --teal-soft: #1b3441;
  --band: #0b1117; --band-ink: #e6edf2; --band-ink-2: #a9b8c3; --band-rule: #22303b; --band-teal: #7cc3dd;
  --field: #0f171d; --ok: #7fd1a3; --err: #f0968d; --bar: rgba(16, 24, 31, 0.92);
  --logo-dark: none; --logo-light: block;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--ground); color: var(--ink); font-family: "Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif; font-size: 17px; line-height: 1.6; -webkit-text-size-adjust: 100%; }
a { color: var(--teal); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }
h1, h2, h3 { font-family: "Sora", "Segoe UI", system-ui, sans-serif; color: var(--navy); text-wrap: balance; margin: 0; }
.logo-dark { display: var(--logo-dark); }
.logo-light { display: var(--logo-light); }

.wrap { max-width: 1120px; margin: 0 auto; padding-inline: 20px; }
.eyebrow { font-family: "IBM Plex Mono", ui-monospace, Consolas, monospace; font-size: 12.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--teal); margin: 0 0 14px; display: flex; align-items: center; gap: 10px; }
/* circuit trace: a line ending in a ring, taken from the logo */
.eyebrow::before { content: ""; width: 28px; height: 2px; background: currentColor; order: -2; }
.eyebrow::after { content: ""; width: 7px; height: 7px; border: 2px solid currentColor; border-radius: 50%; margin-left: -10px; margin-right: 4px; order: -1; flex: none; }

/* ---------- bar ---------- */
.bar { position: sticky; top: 0; z-index: 10; background: var(--bar); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border-bottom: 1px solid var(--rule); padding-top: env(safe-area-inset-top, 0px); }
.bar .wrap { display: flex; align-items: center; gap: 12px 24px; padding-block: 12px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; margin-right: auto; }
.brand img { width: 34px; height: 34px; }
.brand span { font-family: "Sora", system-ui, sans-serif; font-weight: 600; font-size: 17px; color: var(--navy); letter-spacing: 0.01em; }
.nav { display: flex; gap: 22px; }
.nav a { color: var(--ink-2); text-decoration: none; font-size: 15px; font-weight: 600; }
.nav a:hover { color: var(--teal); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: inherit; font-size: 15px; font-weight: 700; text-decoration: none; border-radius: 6px; padding: 9px 18px; border: 1.5px solid var(--teal); cursor: pointer; white-space: nowrap; }
.btn-primary { background: var(--teal); color: var(--teal-ink); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { background: transparent; color: var(--teal); }
.btn-ghost:hover { background: var(--teal-soft); }
@media (max-width: 820px) { .nav { display: none; } }

/* ---------- hero ---------- */
.hero { padding-block: 72px 56px; }
.hero .wrap { display: grid; grid-template-columns: 1.35fr 1fr; gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(34px, 5vw, 54px); line-height: 1.08; font-weight: 600; letter-spacing: -0.02em; }
.hero .lede { font-size: 19.5px; color: var(--ink-2); max-width: 36em; margin: 20px 0 30px; }
.hero .ctas { display: flex; gap: 12px; flex-wrap: wrap; }
.hero .ctas .btn { padding: 12px 22px; font-size: 16px; }
.hero-mark { justify-self: center; width: min(100%, 340px); }
.hero-mark img { width: 100%; height: auto; }
@media (max-width: 820px) {
  .hero { padding-block: 44px 36px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 28px; }
  .hero-mark { order: -1; width: 120px; justify-self: start; }
}

/* ---------- proof figures ---------- */
.proof { border-block: 1px solid var(--rule); background: var(--paper); }
.proof .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.fig { padding: 26px 22px; border-left: 1px solid var(--rule); }
.fig:first-child { border-left: 0; padding-left: 0; }
.fig b { display: block; font-family: "Sora", system-ui, sans-serif; font-size: 30px; font-weight: 600; color: var(--navy); line-height: 1.1; font-variant-numeric: tabular-nums; }
.fig span { display: block; margin-top: 6px; font-size: 15px; color: var(--ink-2); line-height: 1.4; }
@media (max-width: 820px) {
  .proof .wrap { grid-template-columns: 1fr 1fr; }
  .fig { padding: 20px 16px; }
  .fig:nth-child(odd) { border-left: 0; padding-left: 0; }
  .fig:nth-child(n+3) { border-top: 1px solid var(--rule); }
}

/* ---------- sections ---------- */
.section { padding-block: 84px; }
.section h2 { font-size: clamp(28px, 3.6vw, 38px); line-height: 1.15; font-weight: 600; letter-spacing: -0.015em; max-width: 22em; }
.section .intro { color: var(--ink-2); font-size: 18.5px; max-width: 40em; margin: 14px 0 0; }
@media (max-width: 820px) { .section { padding-block: 56px; } }

.services { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 56px; margin-top: 44px; }
.svc { padding: 26px 0; border-top: 1px solid var(--rule); }
.svc h3 { font-size: 21px; font-weight: 600; margin-bottom: 8px; }
.svc p { margin: 0; color: var(--ink-2); }
.svc ul { margin: 10px 0 0; padding-left: 18px; color: var(--ink-2); }
.svc li { margin: 3px 0; }
.svc li::marker { color: var(--teal); }
@media (max-width: 820px) { .services { grid-template-columns: 1fr; } }

/* ---------- AI Pilot ---------- */
.pilot { background: var(--paper); border-block: 1px solid var(--rule); }
.steps { list-style: none; padding: 0; margin: 44px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; counter-reset: step; }
.steps li { counter-increment: step; position: relative; padding-top: 58px; }
.steps li::before { content: counter(step); position: absolute; top: 0; left: 0; width: 38px; height: 38px; border: 2px solid var(--teal); border-radius: 50%; display: grid; place-items: center; font-family: "Sora", system-ui, sans-serif; font-weight: 600; color: var(--teal); background: var(--paper); z-index: 1; }
.steps li::after { content: ""; position: absolute; top: 19px; left: 38px; right: -28px; height: 2px; background: var(--rule); }
.steps li:last-child::after { display: none; }
.steps h3 { font-size: 19px; font-weight: 600; margin-bottom: 6px; }
.steps p { margin: 0; color: var(--ink-2); }
.deliver { margin-top: 40px; padding: 24px 28px; background: var(--teal-soft); border-radius: 8px; display: grid; grid-template-columns: auto 1fr auto; gap: 16px 32px; align-items: center; }
.deliver h3 { font-size: 17px; }
.deliver ul { margin: 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 6px 22px; color: var(--ink); }
.deliver li::before { content: ""; display: inline-block; width: 7px; height: 7px; border: 2px solid var(--teal); border-radius: 50%; margin-right: 8px; vertical-align: 1px; }
@media (max-width: 820px) {
  .steps { grid-template-columns: 1fr; gap: 26px; }
  .steps li { padding: 0 0 0 58px; min-height: 40px; }
  .steps li::after { top: 38px; left: 19px; right: auto; width: 2px; height: calc(100% - 12px); }
  .deliver { grid-template-columns: 1fr; }
}

/* ---------- private AI band ---------- */
.band { background: var(--band); color: var(--band-ink); }
.band h2, .band h3 { color: var(--band-ink); }
.band .eyebrow { color: var(--band-teal); }
.band .intro { color: var(--band-ink-2); }
.band-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; margin-top: 44px; }
.band-grid div { border-top: 2px solid var(--band-teal); padding-top: 16px; }
.band-grid h3 { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.band-grid p { margin: 0; color: var(--band-ink-2); font-size: 16px; }
.band .note { margin: 36px 0 0; color: var(--band-ink-2); font-size: 16px; max-width: 46em; padding-left: 16px; border-left: 2px solid var(--band-rule); }
@media (max-width: 820px) { .band-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .band-grid { grid-template-columns: 1fr; } }

/* ---------- work ---------- */
.work { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 44px; }
.case { background: var(--paper); border: 1px solid var(--rule); border-radius: 8px; padding: 28px; display: flex; flex-direction: column; gap: 10px; }
.case .tag { font-family: "IBM Plex Mono", ui-monospace, Consolas, monospace; font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--teal); }
.case h3 { font-size: 21px; font-weight: 600; }
.case p { margin: 0; color: var(--ink-2); }
.case .stack { margin-top: auto; padding-top: 12px; font-size: 14px; color: var(--ink-3); border-top: 1px solid var(--rule); }
@media (max-width: 820px) { .work { grid-template-columns: 1fr; } }

/* ---------- who + about ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.who { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 14px; }
.who li { padding-left: 22px; position: relative; color: var(--ink-2); }
.who li b { color: var(--ink); }
.who li::before { content: ""; position: absolute; left: 0; top: 9px; width: 8px; height: 8px; border: 2px solid var(--teal); border-radius: 50%; }
.about p { color: var(--ink-2); margin: 16px 0 0; }
.about .creds { font-size: 15px; color: var(--ink-3); }
@media (max-width: 820px) { .split { grid-template-columns: 1fr; gap: 44px; } }

/* ---------- contact ---------- */
.contact { background: var(--paper); border-top: 1px solid var(--rule); }
.contact .wrap { display: grid; grid-template-columns: 1fr 1.4fr; gap: 56px; }
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; position: relative; }
.field { display: grid; gap: 5px; align-content: start; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 14px; font-weight: 700; color: var(--ink-2); }
.field label .opt { font-weight: 400; color: var(--ink-3); }
.field input, .field select, .field textarea { font: inherit; font-size: 16px; color: var(--ink); background: var(--field); border: 1px solid var(--rule); border-radius: 6px; padding: 10px 12px; width: 100%; min-width: 0; }
.field textarea { min-height: 150px; resize: vertical; line-height: 1.5; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--teal); outline: none; box-shadow: 0 0 0 3px var(--teal-soft); }
.form-foot { grid-column: 1 / -1; display: flex; align-items: center; gap: 12px 16px; flex-wrap: wrap; }
.form-foot .btn { padding: 12px 24px; font-size: 16px; }
.form-foot .btn[disabled] { opacity: .6; cursor: progress; }
.status { font-size: 15px; margin: 0; }
.status.ok { color: var(--ok); }
.status.err { color: var(--err); }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
@media (max-width: 820px) { .contact .wrap { grid-template-columns: 1fr; gap: 32px; } }
@media (max-width: 520px) { .form { grid-template-columns: 1fr; } }

footer { border-top: 1px solid var(--rule); padding-block: 28px; font-size: 14px; color: var(--ink-3); }
footer .wrap { display: flex; justify-content: space-between; gap: 10px 24px; flex-wrap: wrap; }
footer a { color: var(--ink-3); }