/* Layout: navy masthead band carrying the three services, then alternating light sections; a triangular lattice taken from the logo mark is the one recurring motif. */
:root {
  --navy: #14205e;
  --navy-2: #1c2c7a;
  --blue: #3d7bf6;
  --blue-ink: #2457c9;
  --sky: #c9dafd;
  --bg: #f5f7fc;
  --surface: #ffffff;
  --fg: #121831;
  --muted: #4d5672;
  --line: #dde3f1;
  --band-fg: #eef2ff;
  --band-muted: #b4c0e6;
  --band-line: rgba(201, 218, 253, .18);
  --card-bg: rgba(255, 255, 255, .06);
  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --navy: #0c1440; --navy-2: #15205a; --blue: #6c9cff; --blue-ink: #8db3ff; --sky: #2a3a78;
    --bg: #0a0f26; --surface: #111836; --fg: #e8ecfa; --muted: #a2abc8; --line: #232d55;
    --band-fg: #eef2ff; --band-muted: #a9b6e0; --band-line: rgba(201, 218, 253, .14); --card-bg: rgba(255, 255, 255, .05);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --navy: #0c1440; --navy-2: #15205a; --blue: #6c9cff; --blue-ink: #8db3ff; --sky: #2a3a78;
  --bg: #0a0f26; --surface: #111836; --fg: #e8ecfa; --muted: #a2abc8; --line: #232d55;
  --band-fg: #eef2ff; --band-muted: #a9b6e0; --band-line: rgba(201, 218, 253, .14); --card-bg: rgba(255, 255, 255, .05);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; animation: none !important; } }
body {
  background: var(--bg); color: var(--fg);
  font-family: var(--body); font-size: 17px; line-height: 1.6;
}
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 30; background: var(--navy); }
a { color: var(--blue-ink); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 4px; }
.wrap {
  max-width: 1160px; margin: 0 auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}
h1, h2, h3 { font-family: var(--display); font-stretch: 112%; line-height: 1.08; letter-spacing: -.01em; text-wrap: balance; margin: 0; }
h2 { font-size: clamp(30px, 4.2vw, 46px); font-weight: 750; }
h3 { font-size: 21px; font-weight: 700; }
p { margin: 0; }
.eyebrow {
  font-family: var(--mono); font-size: 13px; font-weight: 500; letter-spacing: .12em; text-transform: uppercase; color: var(--blue-ink);
  display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ""; width: 0; height: 0; border-left: 6px solid transparent; border-right: 6px solid transparent; border-bottom: 10px solid currentColor; }
.lede { font-size: 19px; color: var(--muted); max-width: 62ch; }

/* ---------- header ---------- */
.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: var(--navy); color: var(--band-fg); border-bottom: 1px solid var(--band-line); }
.top .wrap { display: flex; align-items: center; gap: 28px; padding-block: 14px; }
.brand { display: flex; align-items: center; gap: 12px; color: inherit; text-decoration: none; flex-shrink: 0; }
.brand img { width: 38px; height: 38px; }
.brand b { font-family: var(--display); font-stretch: 118%; font-weight: 800; font-size: 20px; letter-spacing: .01em; }
.brand small { display: block; font-family: var(--mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--band-muted); line-height: 1.2; }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a { color: var(--band-muted); text-decoration: none; font-size: 15px; font-weight: 500; }
.nav a:hover { color: var(--band-fg); }
.btn {
  display: inline-flex; align-items: center; gap: 8px; font: 600 15px/1 var(--body);
  padding: 13px 20px; border-radius: 6px; text-decoration: none; border: 1px solid transparent; transition: background .15s, transform .15s;
  white-space: nowrap; flex-shrink: 0;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: #2f6be6; transform: translateY(-1px); }
.btn-ghost { color: var(--band-fg); border-color: var(--band-line); }
.btn-ghost:hover { background: var(--card-bg); }
@media (max-width: 900px) { .nav { display: none; } .top .btn { margin-left: auto; } }

/* ---------- hero ---------- */
.hero { position: relative; background: var(--navy); color: var(--band-fg); overflow: hidden; }
.hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.hero .wrap { position: relative; padding-block: 72px 80px; display: grid; gap: 56px; }
.hero-copy { display: grid; gap: 22px; max-width: 820px; }
.hero .eyebrow { color: var(--sky); }
:root[data-theme="dark"] .hero .eyebrow { color: #9fbcff; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .hero .eyebrow { color: #9fbcff; } }
.hero h1 { font-size: clamp(40px, 6.4vw, 76px); font-weight: 800; font-stretch: 116%; }
.hero h1 em { font-style: normal; color: var(--blue); }
:root:not([data-theme="dark"]) .hero h1 em { color: #7ea6ff; }
.hero .lede { color: var(--band-muted); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.services { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 880px) { .services { grid-template-columns: minmax(0, 1fr); } }
.svc {
  display: grid; grid-template-rows: auto auto 1fr auto; gap: 12px; padding: 26px 24px 22px;
  background: var(--card-bg); border: 1px solid var(--band-line); border-radius: 10px;
  color: inherit; text-decoration: none; transition: border-color .2s, background .2s, transform .2s;
  backdrop-filter: blur(2px);
}
.svc:hover { border-color: var(--blue); background: rgba(61, 123, 246, .12); transform: translateY(-3px); }
.svc .tag { font-family: var(--mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--band-muted); }
.svc h3 { font-size: 23px; color: #fff; }
.svc p { color: var(--band-muted); font-size: 16px; }
.svc .more { font-weight: 600; font-size: 15px; color: #9fbcff; display: inline-flex; gap: 6px; align-items: center; }
.svc:hover .more span { transform: translateX(3px); }
.svc .more span { transition: transform .2s; }

/* ---------- sections ---------- */
section.block { padding-block: 96px; border-bottom: 1px solid var(--line); }
.head { display: grid; gap: 16px; margin-bottom: 48px; max-width: 760px; }
.split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 64px; align-items: start; }
@media (max-width: 900px) { .split { grid-template-columns: minmax(0, 1fr); gap: 40px; } section.block { padding-block: 72px; } }

/* CDO */
.cdo-points { display: grid; gap: 18px; margin-top: 28px; padding: 0; list-style: none; }
.cdo-points li { display: grid; grid-template-columns: 18px minmax(0, 1fr); gap: 12px; color: var(--muted); }
.cdo-points li::before { content: ""; margin-top: 8px; width: 0; height: 0; border-left: 6px solid transparent; border-right: 6px solid transparent; border-bottom: 10px solid var(--blue); }
.cdo-points b { color: var(--fg); font-weight: 600; }

.pillars { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.pillars-head { padding: 22px 26px; border-bottom: 1px solid var(--line); display: grid; gap: 6px; }
.pillars-head h3 { font-size: 22px; }
.pillars-head p { color: var(--muted); font-size: 15.5px; }
.pillar { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 20px; padding: 18px 26px; border-bottom: 1px solid var(--line); align-items: baseline; }
.pillar:last-of-type { border-bottom: 0; }
.pillar dt { font-family: var(--display); font-stretch: 110%; font-weight: 700; font-size: 18px; color: var(--fg); }
.pillar dd { margin: 0; color: var(--muted); }
.pillar dd q { quotes: none; color: var(--fg); font-weight: 500; }
@media (max-width: 560px) { .pillar { grid-template-columns: minmax(0, 1fr); gap: 4px; } }
.credit { padding: 16px 26px; background: var(--bg); border-top: 1px solid var(--line); font-size: 14.5px; color: var(--muted); }

/* Insights accelerator */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; counter-reset: s; border-top: 2px solid var(--fg); }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .steps { grid-template-columns: minmax(0, 1fr); } }
.step { padding: 22px 24px 26px 0; display: grid; gap: 10px; align-content: start; counter-increment: s; }
.step::before { content: "Stage " counter(s); font-family: var(--mono); font-size: 12.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--blue-ink); }
.step p { color: var(--muted); font-size: 16px; }
.daap {
  margin-top: 48px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px; align-items: center;
  padding: 28px 30px; border-radius: 12px; background: var(--surface); border: 1px solid var(--line);
}
.daap p { color: var(--muted); max-width: 70ch; }
.daap strong { color: var(--fg); }
.daap .stat { font-family: var(--display); font-stretch: 120%; font-weight: 800; font-size: 30px; color: var(--blue-ink); white-space: nowrap; }
@media (max-width: 700px) { .daap { grid-template-columns: minmax(0, 1fr); } }

/* Migration */
.migration { background: var(--surface); }
.years { display: flex; align-items: baseline; gap: 14px; margin-bottom: 18px; }
.years b { font-family: var(--display); font-stretch: 125%; font-weight: 800; font-size: clamp(72px, 10vw, 120px); line-height: .9; color: var(--blue-ink); letter-spacing: -.03em; }
.years span { font-family: var(--mono); font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); max-width: 12ch; line-height: 1.4; }
.engines { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
@media (max-width: 480px) { .engines { grid-template-columns: minmax(0, 1fr); } }
.engine { border: 1px solid var(--line); border-radius: 10px; padding: 20px 20px 18px; background: var(--bg); display: grid; gap: 6px; }
.engine h3 { font-size: 20px; }
.engine p { font-size: 15px; color: var(--muted); }
.engine code { font-family: var(--mono); font-size: 12.5px; color: var(--blue-ink); letter-spacing: .02em; }
.path {
  margin-top: 22px; display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 14px; color: var(--muted);
  padding: 16px 20px; border: 1px dashed var(--line); border-radius: 10px;
}
.path .from { text-decoration: line-through; text-decoration-color: var(--muted); }
.path .to { color: var(--fg); font-weight: 500; }
.path .arrow { color: var(--blue-ink); }

/* Expertise */
.grid8 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
@media (max-width: 960px) { .grid8 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .grid8 { grid-template-columns: minmax(0, 1fr); } }
.cell { padding: 24px 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); display: grid; gap: 8px; align-content: start; }
.cell h3 { font-size: 17.5px; font-stretch: 108%; }
.cell p { font-size: 15px; color: var(--muted); }
.cell .k { font-family: var(--mono); font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--blue-ink); }

.tools { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 8px 10px; align-items: center; }
.tools .label { font-family: var(--mono); font-size: 12.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-right: 6px; }
.chip { font-family: var(--mono); font-size: 13px; padding: 6px 11px; border: 1px solid var(--line); border-radius: 999px; color: var(--fg); background: var(--surface); }

/* CTA */
.cta { position: relative; background: var(--navy-2); color: var(--band-fg); overflow: hidden; }
.cta canvas { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; opacity: .7; }
.cta .wrap { position: relative; padding-block: 88px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 32px; align-items: end; }
.cta h2 { color: #fff; max-width: 18ch; }
.cta p { color: var(--band-muted); margin-top: 16px; max-width: 56ch; }
@media (max-width: 760px) { .cta .wrap { grid-template-columns: minmax(0, 1fr); align-items: start; } }

footer { background: var(--navy); color: var(--band-muted); font-size: 14.5px; }
footer .wrap { padding-block: 40px; display: flex; flex-wrap: wrap; gap: 20px 40px; justify-content: space-between; align-items: center; border-top: 1px solid var(--band-line); }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 22px; }
footer a { color: var(--band-muted); text-decoration: none; }
footer a:hover { color: var(--band-fg); }

.page { padding-block: 72px 96px; }
.page h1 { font-size: clamp(36px, 5vw, 56px); font-weight: 800; font-stretch: 116%; max-width: 18ch; }
.prose { max-width: 68ch; display: grid; gap: 14px; margin-top: 32px; }
.prose h2 { font-size: clamp(26px, 3vw, 34px); margin-top: 22px; }
.prose h3 { font-size: 20px; margin-top: 10px; }
.prose p, .prose li { color: var(--muted); }
.prose ul { margin: 0; padding-left: 1.2em; display: grid; gap: 8px; }
.prose a { word-break: break-word; }
.updated { font-family: var(--mono); font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.book-form { display: grid; gap: 18px; max-width: 560px; margin-top: 32px; }
.field { display: grid; gap: 6px; }
.field label { font-weight: 600; font-size: 15px; }
.field input, .field textarea, .field select {
  font: 400 16px/1.5 var(--body); color: var(--fg); background: var(--surface);
  border: 1px solid var(--line); border-radius: 6px; padding: 12px 14px; width: 100%;
}
.field textarea { min-height: 140px; resize: vertical; }
.field select {
  appearance: none; padding-right: 40px; cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 20px) 50%, calc(100% - 14px) 50%;
  background-size: 6px 6px; background-repeat: no-repeat;
}
.field input:focus-visible, .field textarea:focus-visible, .field select:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }
.form-status { margin: 0; padding: 14px 16px; border-radius: 8px; background: var(--surface); border: 1px solid var(--line); color: var(--fg); }
.form-status.is-error { border-color: #e5534b; color: #ff9b94; }
.book-form .btn:disabled { opacity: .6; cursor: progress; transform: none; }
#book-turnstile:empty { display: none; }
.missing { display: grid; gap: 16px; max-width: 36ch; }