:root {
  --ink: #14213a;
  --muted: #59677c;
  --line: #dce3ec;
  --soft: #f4f7fb;
  --blue: #1b63d9;
  --blue-dark: #104fae;
  --white: #fff;
  --shadow: 0 14px 38px rgba(20, 33, 58, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); 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; }
.container { width: min(1120px, calc(100% - 48px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.93); border-bottom: 1px solid rgba(220,227,236,.8); backdrop-filter: blur(10px); }
.nav-wrap { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: block; width: 146px; height: 31px; overflow: hidden; flex: 0 0 auto; }
.logo-crop { display: block; width: 146px; height: 31px; overflow: hidden; }
.logo-crop img { display: block; width: 240px; max-width: none; transform: translate(-47px, -101px); }
nav { display: flex; align-items: center; gap: 24px; font-size: .9rem; font-weight: 600; color: #415069; }
nav a, .footer-links a { text-decoration: none; }
nav a:hover, .footer-links a:hover { color: var(--blue); }
.nav-contact { color: var(--blue); font-weight: 700; text-decoration: none; }
.hero { padding: 124px 0 118px; background: radial-gradient(circle at 88% 10%, #e4efff 0, transparent 27rem), linear-gradient(180deg, #fff 0%, #f8fbff 100%); }
.hero-content { max-width: 820px; }
.eyebrow { margin: 0 0 16px; color: var(--blue); font-size: .78rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
h1, h2, h3 { margin: 0; color: var(--ink); line-height: 1.12; letter-spacing: -.035em; }
h1 { max-width: 760px; font-size: clamp(2.9rem, 6vw, 5.1rem); }
h2 { font-size: clamp(2rem, 3.8vw, 3.3rem); }
h3 { font-size: 1.25rem; }
.hero-lead { max-width: 690px; margin: 28px 0 10px; font-size: clamp(1.15rem, 2vw, 1.43rem); line-height: 1.5; font-weight: 600; color: #33445f; }
.hero-copy { max-width: 660px; margin: 0; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button { display: inline-flex; align-items: center; gap: 12px; padding: 13px 18px; border-radius: 7px; font-size: .94rem; font-weight: 750; text-decoration: none; transition: .18s ease; }
.button-primary { background: var(--blue); color: #fff; box-shadow: 0 8px 16px rgba(27,99,217,.2); }
.button-primary:hover { background: var(--blue-dark); transform: translateY(-1px); }
.button-secondary { border: 1px solid #bdc9da; color: #2c3f5d; }
.button-secondary:hover { border-color: var(--blue); color: var(--blue); }
.section { padding: 104px 0; }
.split-layout { display: grid; grid-template-columns: minmax(220px, .75fr) minmax(0, 1.25fr); gap: 64px; }
.validation-section { border-top: 1px solid var(--line); }
.validation-card { padding: 35px 38px; border: 1px solid #d5e0f0; border-radius: 11px; background: #f8fbff; box-shadow: var(--shadow); color: #3d4e67; }
.validation-card p { margin: 0 0 17px; }
.validation-card .intro { color: #263b5a; font-size: 1.12rem; line-height: 1.6; }
.feature-list { display: grid; gap: 8px; padding: 0; margin: 24px 0 26px; list-style: none; font-weight: 650; color: #2e4465; }
.feature-list li::before { content: "✓"; display: inline-block; width: 24px; color: var(--blue); font-weight: 900; }
.text-link { color: var(--blue); font-weight: 780; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.systems-section { background: var(--soft); }
.section-heading { max-width: 660px; margin-bottom: 42px; }
.section-heading > p:last-child { margin: 18px 0 0; color: var(--muted); }
.systems-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.system-card { min-height: 246px; padding: 25px; border: 1px solid #dde5ef; border-radius: 10px; background: #fff; }
.featured-system { border-color: #aec8ef; background: linear-gradient(145deg, #fff 20%, #edf5ff); }
.card-label { display: block; margin-bottom: 35px; color: #62728a; font-size: .72rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.system-card h3 { margin-bottom: 12px; }
.system-card p { margin: 0; color: var(--muted); font-size: .94rem; line-height: 1.6; }
.supporting-logo { width: 136px; height: 36px; overflow: hidden; margin: -16px 0 14px; }
.supporting-logo img { display: block; max-width: none; }
.logo-runningads img { width: 205px; transform: translate(-33px, -48px); }
.logo-actdaily img { width: 205px; transform: translate(-29px, -26px); }
.system-card:has(.supporting-logo) .card-label { margin-bottom: 21px; }
.about-section { padding: 118px 0; }
.about-content { max-width: 770px; }
.about-content p:last-child { max-width: 720px; margin: 23px 0 0; color: var(--muted); font-size: 1.18rem; }
.contact-section { padding-top: 0; }
.contact-panel { display: grid; grid-template-columns: 1.45fr .55fr; gap: 48px; padding: 51px 55px; border-radius: 12px; background: #14284a; color: #d8e2f3; }
.contact-panel h2 { color: #fff; }
.contact-panel p:not(.eyebrow) { margin-bottom: 0; color: #c2d0e6; }
.contact-details { display: grid; align-content: center; gap: 10px; font-weight: 650; }
.contact-details a { color: #fff; text-decoration-color: #78a4e9; text-underline-offset: 3px; }
address { font-style: normal; }
.site-footer { margin-top: 104px; padding: 45px 0; border-top: 1px solid var(--line); color: #647287; font-size: .88rem; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; align-items: start; gap: 30px; }
.footer-brand { margin-bottom: 10px; }
.site-footer p { margin: 0; }
.footer-links { display: grid; gap: 5px; }
.privacy-page { min-height: calc(100vh - 233px); padding: 108px 0; background: #f8fbff; }
.prose { max-width: 780px; }
.prose h1 { font-size: clamp(2.6rem, 5vw, 4rem); }
.prose h2 { margin-top: 42px; font-size: 1.6rem; }
.prose p { max-width: 680px; color: #43536b; font-size: 1.05rem; }
.prose a { color: var(--blue); }
.back-link { margin-top: 42px; font-weight: 750; }
.simple-footer { margin-top: 0; }

@media (max-width: 760px) {
  .container { width: min(100% - 36px, 1120px); }
  .nav-wrap { min-height: 64px; }
  nav { display: none; }
  .hero { padding: 82px 0 78px; }
  .section { padding: 75px 0; }
  .split-layout, .contact-panel, .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .validation-card { padding: 26px; }
  .systems-grid { grid-template-columns: 1fr; }
  .system-card { min-height: 0; }
  .contact-panel { padding: 34px 28px; }
  .site-footer { margin-top: 75px; }
  .privacy-page { padding: 72px 0; }
}