:root {
  --ink: #07111f;
  --ink-soft: #10243a;
  --paper: #f4f7fa;
  --paper-strong: #ffffff;
  --blue: #1d5cff;
  --cyan: #5ee7f4;
  --line: #cbd7e4;
  --muted: #536578;
  --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 16px; line-height: 1.65; }
a { color: inherit; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; background: white; padding: .65rem 1rem; border-radius: .3rem; }
.skip-link:focus { top: 1rem; }
.site-header { position: sticky; top: 0; z-index: 20; min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: 0 max(1.25rem, calc((100vw - var(--max))/2)); background: rgba(244,247,250,.92); border-bottom: 1px solid rgba(203,215,228,.8); backdrop-filter: blur(16px); }
.brand { display: inline-flex; align-items: center; gap: .75rem; text-decoration: none; font-weight: 700; letter-spacing: -.02em; }
.brand b { font-size: .72em; color: var(--blue); letter-spacing: .08em; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; color: white; background: var(--ink); border-radius: 3px; font-size: .82rem; font-weight: 800; letter-spacing: -.04em; box-shadow: inset 0 -3px 0 var(--blue); }
.brand-mark.small { width: 30px; height: 30px; font-size: .7rem; }
nav { display: flex; align-items: center; gap: 1.75rem; }
nav a { color: var(--ink-soft); text-decoration: none; font-size: .9rem; font-weight: 650; }
nav a:hover, nav a:focus-visible { color: var(--blue); }
.nav-contact { padding: .55rem .9rem; color: white; background: var(--ink); border-radius: 3px; }
nav .nav-contact:hover, nav .nav-contact:focus-visible { color: white; background: var(--blue); }
.nav-toggle { display: none; padding: .55rem .75rem; border: 1px solid var(--line); background: white; border-radius: 3px; font: inherit; font-weight: 700; }
main, footer { overflow: hidden; }
.hero { position: relative; min-height: 690px; display: grid; grid-template-columns: 1.06fr .94fr; gap: clamp(3rem, 8vw, 7rem); align-items: center; max-width: var(--max); margin: 0 auto; padding: clamp(5rem, 10vw, 8.5rem) 1.25rem; }
.hero::before { content: ""; position: absolute; inset: 0 52% 0 -100vw; background: linear-gradient(rgba(29,92,255,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(29,92,255,.055) 1px, transparent 1px); background-size: 32px 32px; pointer-events: none; }
.hero-copy { position: relative; z-index: 1; }
.eyebrow, .section-index { margin: 0 0 1.1rem; color: var(--blue); text-transform: uppercase; letter-spacing: .16em; font-size: .76rem; font-weight: 800; }
h1, h2, h3 { margin-top: 0; line-height: 1.08; letter-spacing: -.045em; }
h1 { max-width: 760px; margin-bottom: 1.5rem; font-size: clamp(3rem, 6.1vw, 5.7rem); font-weight: 760; }
h2 { margin-bottom: 1.25rem; font-size: clamp(2rem, 4vw, 3.4rem); }
h3 { margin-bottom: .85rem; font-size: 1.55rem; }
.hero-lede { max-width: 690px; margin: 0; color: var(--muted); font-size: clamp(1.05rem, 1.4vw, 1.22rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin: 2rem 0 1.25rem; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: .7rem 1.2rem; border: 1px solid var(--ink); border-radius: 3px; text-decoration: none; font-weight: 750; }
.button-primary { color: white; background: var(--ink); }
.button-primary:hover, .button-primary:focus-visible { background: var(--blue); border-color: var(--blue); }
.button-secondary { background: transparent; }
.button-secondary:hover, .button-secondary:focus-visible { color: var(--blue); border-color: var(--blue); }
.hero-note { color: var(--muted); font-size: .9rem; }
.hero-note a { color: var(--ink); font-weight: 700; text-underline-offset: 3px; }
.hero-system { position: relative; min-height: 470px; padding: 1.4rem; color: white; background: var(--ink); border-radius: 4px; box-shadow: 24px 24px 0 rgba(29,92,255,.11); overflow: hidden; }
.hero-system::before { content: ""; position: absolute; inset: 0; opacity: .23; background: radial-gradient(circle at 75% 10%, var(--cyan), transparent 31%), linear-gradient(135deg, transparent 49.8%, rgba(94,231,244,.22) 50%, transparent 50.2%); }
.system-label { position: relative; padding-bottom: .9rem; border-bottom: 1px solid rgba(255,255,255,.2); color: var(--cyan); font-size: .72rem; font-weight: 800; letter-spacing: .18em; }
.system-core { position: relative; display: grid; place-items: center; width: 225px; aspect-ratio: 1; margin: 3rem auto 2rem; border: 1px solid rgba(94,231,244,.46); border-radius: 50%; text-align: center; }
.system-core::before, .system-core::after { content: ""; position: absolute; width: 29px; height: 29px; border: 5px solid var(--cyan); background: var(--ink); transform: rotate(45deg); }
.system-core::before { left: -16px; top: calc(50% - 16px); }
.system-core::after { right: -16px; top: calc(50% - 16px); }
.system-core span { font-size: .68rem; letter-spacing: .18em; color: #9cb2c7; }
.system-core strong { font-size: 1.8rem; letter-spacing: -.04em; }
.system-paths { position: relative; display: flex; align-items: center; justify-content: center; gap: .5rem; color: #b9c8d6; font-size: .67rem; text-transform: uppercase; letter-spacing: .08em; }
.system-paths i { width: 22px; height: 1px; background: var(--cyan); }
.system-stats { position: relative; display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; margin: 2.8rem 0 0; background: rgba(255,255,255,.16); }
.system-stats div { padding: 1rem .75rem; background: var(--ink); }
.system-stats dt { color: var(--cyan); font-weight: 800; }
.system-stats dd { margin: .2rem 0 0; color: #b9c8d6; font-size: .76rem; }
.intro, .services, .approach, .contact { max-width: var(--max); margin: 0 auto; padding: clamp(5rem, 9vw, 8rem) 1.25rem; }
.intro { display: grid; grid-template-columns: .36fr 1fr; gap: 3rem; border-top: 1px solid var(--line); }
.intro h2 { max-width: 820px; }
.intro div p { max-width: 740px; color: var(--muted); font-size: 1.08rem; }
.section-heading { display: grid; grid-template-columns: .36fr 1fr; column-gap: 3rem; margin-bottom: 2.4rem; }
.section-heading h2 { grid-column: 2; }
.section-heading .section-index { grid-row: 1; }
.section-heading.compact p:last-child { grid-column: 2; max-width: 730px; margin: 0; color: var(--muted); font-size: 1.05rem; }
.service-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.service-card { min-height: 460px; padding: clamp(2rem, 4vw, 3.2rem); background: var(--paper-strong); border: 1px solid var(--line); border-radius: 4px; }
.service-card-accent { color: white; background: var(--ink-soft); border-color: var(--ink-soft); }
.service-card p { color: var(--muted); }
.service-card-accent p { color: #bac8d5; }
.card-number { margin: 0 0 5rem; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-weight: 800; }
.service-card-accent .card-number { color: var(--cyan); }
.service-card ul { display: grid; gap: .55rem; margin: 2rem 0 0; padding: 0; list-style: none; }
.service-card li { position: relative; padding-left: 1.1rem; font-weight: 620; }
.service-card li::before { content: ""; position: absolute; left: 0; top: .72em; width: 5px; height: 5px; background: var(--blue); }
.service-card-accent li::before { background: var(--cyan); }
.approach { border-top: 1px solid var(--line); }
.process-list { margin: 4rem 0 0; padding: 0; list-style: none; }
.process-list li { display: grid; grid-template-columns: .36fr 1fr; gap: 3rem; padding: 1.7rem 0; border-top: 1px solid var(--line); }
.process-list li:last-child { border-bottom: 1px solid var(--line); }
.process-list > li > span { color: var(--blue); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-weight: 800; }
.process-list h3 { margin-bottom: .35rem; }
.process-list p { max-width: 620px; margin: 0; color: var(--muted); }
.contact { display: grid; grid-template-columns: .36fr 1fr; gap: 2rem 3rem; align-items: end; color: white; background: var(--blue); max-width: none; padding-left: max(1.25rem, calc((100vw - var(--max))/2 + 1.25rem)); padding-right: max(1.25rem, calc((100vw - var(--max))/2 + 1.25rem)); }
.contact .section-index { color: white; align-self: start; }
.contact h2 { max-width: 780px; }
.contact p { color: #dce7ff; }
.contact-link { grid-column: 2; display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 1rem; padding: 1.3rem 0; border-top: 1px solid rgba(255,255,255,.45); border-bottom: 1px solid rgba(255,255,255,.45); text-decoration: none; }
.contact-link span { text-transform: uppercase; font-size: .75rem; font-weight: 800; letter-spacing: .15em; }
.contact-link strong { font-size: clamp(1.1rem, 2vw, 1.45rem); }
.contact-link:hover strong, .contact-link:focus-visible strong { text-decoration: underline; text-underline-offset: 5px; }
footer { display: grid; grid-template-columns: 1.4fr 1fr auto; gap: 1.3rem 2rem; max-width: var(--max); margin: 0 auto; padding: 3.2rem 1.25rem 2rem; color: var(--muted); font-size: .86rem; }
.footer-brand { display: flex; align-items: center; gap: .65rem; color: var(--ink); font-weight: 750; }
.footer-links { display: flex; gap: 1.2rem; }
.footer-links a { text-underline-offset: 3px; }
.copyright { grid-column: 1 / -1; padding-top: 1.5rem; border-top: 1px solid var(--line); }
.privacy { max-width: 800px; min-height: calc(100vh - 180px); margin: 0 auto; padding: 5rem 1.25rem; }
.privacy h1 { font-size: clamp(2.4rem, 5vw, 4.5rem); }
.privacy h2 { margin-top: 2.6rem; font-size: 1.4rem; letter-spacing: -.02em; }
.privacy p { color: var(--muted); }
:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; }
@media (max-width: 820px) {
  .site-header { min-height: 66px; }
  .nav-toggle { display: block; }
  nav { display: none; position: absolute; left: 0; right: 0; top: 66px; flex-direction: column; align-items: stretch; gap: 0; padding: .75rem 1.25rem 1rem; background: var(--paper-strong); border-bottom: 1px solid var(--line); }
  nav.open { display: flex; }
  nav a { padding: .8rem 0; }
  .nav-contact { padding: .8rem; text-align: center; }
  .hero { min-height: auto; grid-template-columns: 1fr; }
  .hero::before { inset: 0; }
  .hero-system { min-height: 430px; }
  .intro, .section-heading, .process-list li, .contact { grid-template-columns: 1fr; gap: 1.1rem; }
  .section-heading h2, .section-heading.compact p:last-child, .contact-link { grid-column: 1; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: auto; }
  .card-number { margin-bottom: 3rem; }
  footer { grid-template-columns: 1fr; }
  .copyright { grid-column: 1; }
}
@media (max-width: 480px) {
  .brand > span:last-child { max-width: 190px; font-size: .9rem; }
  h1 { font-size: 2.8rem; }
  .hero-actions .button { width: 100%; }
  .hero-system { min-height: 400px; padding: 1rem; }
  .system-core { width: 190px; }
  .system-paths { gap: .35rem; font-size: .58rem; }
  .system-paths i { width: 10px; }
  .system-stats div { padding: .85rem .4rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }