:root {
  --ink: #20211e;
  --muted: #62635d;
  --yellow: #ffd900;
  --paper: #fff;
  --soft: #f5f6f2;
  --line: #dedfd8;
  --container: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 110px; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Arial, Helvetica, sans-serif; font-size: 1rem; line-height: 1.65; -webkit-font-smoothing: antialiased; }
::selection { color: var(--ink); background: var(--yellow); }
a { color: inherit; }
button { font: inherit; }
img, svg { max-width: 100%; }
img { display: block; height: auto; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { font-weight: 600; }
h1, h2 { letter-spacing: -.055em; line-height: 1.06; }
h2 { font-size: clamp(2.3rem, 4.1vw, 3.5rem); }
h3 { letter-spacing: -.025em; line-height: 1.25; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--ink); outline-offset: 5px; }
.container { width: min(var(--container), calc(100% - 96px)); margin-inline: auto; }
.section { padding-block: 108px; }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 100; padding: 10px 18px; background: var(--yellow); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.site-header { position: sticky; top: 0; z-index: 20; background: #fff; border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 102px; }
.brand { flex-shrink: 0; display: block; width: 196px; }
.navigation { display: flex; align-items: center; gap: 32px; }
.navigation > a { text-decoration: none; font-size: .875rem; font-weight: 600; }
.navigation > a:not(.button):hover { text-decoration: underline; text-underline-offset: 6px; }
.button { min-height: 52px; display: inline-flex; justify-content: center; align-items: center; padding: 13px 27px; border: 1px solid var(--yellow); border-radius: 3px; color: var(--ink); background: var(--yellow); font-size: .9375rem; line-height: 1.4; font-weight: 700; text-decoration: none; transition: background .18s ease, border-color .18s ease; }
.button:hover { background: #f0cd00; border-color: #f0cd00; }
.button-small { min-height: 44px; padding: 10px 24px; }
.button-dark { background: var(--ink); border-color: var(--ink); color: #fff; }
.button-dark:hover { background: #3b3d35; border-color: #3b3d35; }
.menu-toggle[hidden] { display: none; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin-bottom: 24px; font-size: .75rem; letter-spacing: .095em; line-height: 1.5; font-weight: 700; text-transform: uppercase; }
.eyebrow-line { width: 25px; height: 3px; background: var(--yellow); flex-shrink: 0; }
.hero { padding: 76px 0 88px; }
.hero-grid { display: grid; grid-template-columns: 1.14fr 1fr; gap: 62px; align-items: center; }
.hero h1 { font-size: clamp(3.6rem, 5.2vw, 4.75rem); max-width: 680px; }
.highlight { background: linear-gradient(transparent 88%, var(--yellow) 88%); box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.hero-description { margin-top: 30px; font-size: 1.25rem; font-weight: 600; letter-spacing: -.025em; line-height: 1.5; }
.hero-detail { margin-top: 12px; max-width: 480px; color: var(--muted); font-size: 1.0625rem; }
.hero-actions { display: flex; gap: 25px; align-items: center; margin-top: 30px; }
.text-link { font-size: .9375rem; font-weight: 600; text-decoration-thickness: 1px; text-underline-offset: 6px; }
.text-link:hover { text-decoration-thickness: 2px; }
.hero-note { margin-top: 23px; color: var(--muted); font-size: .8125rem; }
.system-panel { align-self: center; background: var(--soft); border: 1px solid var(--line); border-radius: 6px; padding: 24px; }
.panel-heading { display: flex; justify-content: space-between; align-items: center; gap: 15px; }
.small-label { font-size: .75rem; letter-spacing: .07em; font-weight: 700; text-transform: uppercase; }
.panel-index { font-size: .75rem; letter-spacing: .06em; color: var(--muted); }
.systems-diagram { display: block; width: 100%; margin-top: 12px; }
.panel-footer { display: flex; align-items: center; gap: 14px; padding-top: 17px; border-top: 1px solid var(--line); }
.connection-symbol { font-size: 2rem; line-height: 1; }
.panel-footer p { font-size: .875rem; line-height: 1.5; color: var(--muted); }
.panel-footer strong { color: var(--ink); font-weight: 600; }
.problems { background: var(--soft); border-block: 1px solid var(--line); }
.section-heading { margin-bottom: 48px; }
.split-heading { display: grid; grid-template-columns: 1fr .8fr; align-items: end; gap: 80px; }
.split-heading > p { max-width: 440px; color: var(--muted); font-size: 1.0625rem; }
.problem-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid #d3d5cb; padding-top: 34px; }
.problem { padding: 0 24px; border-left: 1px solid #d3d5cb; }
.problem:first-child { border: 0; padding-left: 0; }
.problem:last-child { padding-right: 0; }
.problem-mark { display: block; margin-bottom: 24px; font-size: .75rem; color: var(--muted); }
.problem h3 { font-size: 1.25rem; min-height: 3.2em; margin-bottom: 14px; }
.problem p { color: var(--muted); font-size: .9375rem; }
.problem-closing { margin-top: 38px; font-size: .9375rem; }
.problem-closing strong { font-weight: 600; }
.service-list { border-top: 1px solid var(--ink); }
.service-row { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; padding-block: 35px; border-bottom: 1px solid var(--line); }
.service-title { display: flex; gap: 32px; align-items: start; }
.service-number { width: 30px; padding-top: 7px; font-size: .8125rem; color: var(--muted); flex-shrink: 0; }
.service-title h3 { font-size: 1.75rem; }
.service-detail > p { max-width: 540px; color: var(--muted); }
.service-tags { display: flex; flex-wrap: wrap; gap: 7px; margin: 17px 0 0; padding: 0; list-style: none; }
.service-tags li { font-size: .75rem; line-height: 1.5; border: 1px solid var(--line); border-radius: 3px; padding: 5px 9px; }
.platforms { padding-block: 55px; background: var(--ink); color: #fff; }
.platforms-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.platforms .eyebrow { color: var(--yellow); margin-bottom: 16px; }
.platforms h2 { font-size: 2.125rem; line-height: 1.15; letter-spacing: -.035em; }
.core-platforms { display: flex; align-items: center; gap: 32px; padding-bottom: 22px; border-bottom: 1px solid #50524a; }
.core-platforms > span:first-child { font-size: 1.75rem; letter-spacing: -.04em; font-weight: 700; white-space: nowrap; }
.core-platforms > span:last-child { padding-left: 32px; border-left: 1px solid #50524a; font-size: .875rem; line-height: 1.6; }
.core-platforms strong { font-size: 1.125rem; font-weight: 600; }
.platforms-content > p { margin-top: 18px; font-size: .875rem; color: #c4c6bc; }
.section-intro { margin-top: 22px; max-width: 620px; font-size: 1.0625rem; color: var(--muted); }
.engagement-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.engagement { padding: 38px; background: var(--soft); border: 1px solid var(--line); border-radius: 4px; }
.engagement-yellow { background: var(--yellow); border-color: var(--yellow); }
.engagement h3 { font-size: 1.875rem; margin-block: 25px 18px; }
.engagement > p { color: #505249; }
.engagement-yellow > p { color: #363727; }
.engagement .engagement-example { padding-top: 22px; margin-top: 25px; border-top: 1px solid #d3d5cb; font-size: .875rem; }
.engagement-yellow .engagement-example { border-color: #c5a800; }
.inherit-note { display: flex; align-items: start; gap: 18px; max-width: 950px; margin-top: 30px; }
.inherit-note > span { font-size: 1.5rem; line-height: 1.2; }
.inherit-note p { font-size: .9375rem; color: var(--muted); }
.inherit-note strong { color: var(--ink); font-weight: 600; }
.approach { padding-top: 0; }
.approach-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; padding-top: 76px; border-top: 1px solid var(--line); }
.approach-intro h2 { font-size: clamp(2.25rem, 3.5vw, 3rem); }
.approach-intro > p:last-child { margin-top: 24px; max-width: 420px; color: var(--muted); font-size: 1.0625rem; }
.approach-list { list-style: none; padding: 0; margin: 0; }
.approach-list li { display: flex; gap: 22px; padding-block: 24px; border-top: 1px solid var(--line); }
.approach-list li:first-child { border: 0; padding-top: 0; }
.approach-list li:last-child { padding-bottom: 0; }
.step-number { font-size: .75rem; padding-top: 4px; color: var(--muted); }
.approach-list h3 { font-size: 1.1875rem; margin-bottom: 10px; }
.approach-list p { color: var(--muted); font-size: .9375rem; }
.contact { background: var(--yellow); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; }
.contact h2 { font-size: clamp(2.5rem, 4.5vw, 3.875rem); }
.contact-grid > div:first-child > p:last-child { margin-top: 26px; max-width: 440px; color: #41412b; font-size: 1.0625rem; }
.contact-details { padding-left: 54px; border-left: 1px solid #c6aa00; }
.email-link { display: block; width: fit-content; font-size: clamp(1.375rem, 2.3vw, 1.875rem); line-height: 1.5; font-weight: 600; letter-spacing: -.03em; margin: 14px 0 28px; text-decoration-thickness: 1px; text-underline-offset: 7px; overflow-wrap: anywhere; }
.email-link:hover { text-decoration-thickness: 2px; }
.contact-details > p, .contact-details li { font-size: .9375rem; color: #41412b; }
.contact-details ul { margin: 10px 0 27px; padding-left: 18px; }
.contact-details li { padding-left: 4px; margin-block: 5px; }
.site-footer { padding-block: 40px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 25px; }
.footer-brand { font-size: 1.375rem; letter-spacing: -.04em; font-weight: 700; text-decoration: none; }
.footer-brand span { color: #9c8300; }
.footer-inner p { color: var(--muted); font-size: .75rem; }
.footer-top { font-size: .8125rem; text-underline-offset: 5px; }

@media (min-width: 1500px) { .hero { padding-block: 100px; } }
@media (max-width: 1100px) {
  .container { width: calc(100% - 64px); }
  .navigation { gap: 23px; }
  .hero-grid { gap: 35px; }
  .hero h1 { font-size: 3.6rem; }
  .hero .eyebrow { font-size: .75rem; }
  .system-panel { padding: 18px; }
  .panel-index { display: none; }
  .split-heading, .service-row, .platforms-inner, .approach-grid { gap: 45px; }
  .problem { padding-inline: 18px; }
  .problem h3 { font-size: 1.125rem; }
  .core-platforms { gap: 20px; }
  .core-platforms > span:last-child { padding-left: 20px; }
  .contact-grid { gap: 55px; }
  .contact-details { padding-left: 35px; }
}
@media (max-width: 850px) {
  html { scroll-padding-top: 100px; }
  .header-inner { flex-wrap: wrap; gap: 0; min-height: 90px; }
  .brand { width: 170px; }
  .menu-toggle { display: flex; align-items: center; gap: 12px; padding: 12px 0 12px 16px; border: 0; background: transparent; font-size: .875rem; font-weight: 600; cursor: pointer; }
  .menu-icon { width: 20px; height: 12px; border-block: 2px solid var(--ink); }
  .menu-toggle[aria-expanded="true"] .menu-icon { height: 2px; border-bottom: 0; }
  .navigation { width: 100%; flex-wrap: wrap; gap: 16px 28px; padding-block: 5px 22px; }
  .navigation[data-collapsible="true"] { display: none; }
  .navigation[data-collapsible="true"][data-open="true"] { display: flex; }
  .hero { padding-block: 54px 66px; }
  .hero-grid { grid-template-columns: 1fr; gap: 45px; }
  .hero h1 { max-width: 690px; font-size: clamp(3.35rem, 7.8vw, 4.5rem); }
  .hero-detail { max-width: 580px; }
  .system-panel { max-width: 540px; width: 100%; padding: 24px; }
  .systems-diagram { max-height: 370px; }
  .panel-index { display: block; }
  .section { padding-block: 76px; }
  .split-heading { grid-template-columns: 1fr; gap: 24px; }
  .split-heading > p { max-width: 580px; }
  .problem-grid { grid-template-columns: 1fr 1fr; gap: 32px 0; }
  .problem { padding-inline: 24px; }
  .problem:nth-child(3) { padding-left: 0; border: 0; }
  .problem h3 { min-height: 0; font-size: 1.25rem; }
  .service-row { gap: 35px; }
  .service-title { gap: 15px; }
  .service-title h3 { font-size: 1.5rem; }
  .platforms-inner { grid-template-columns: 1fr; gap: 32px; }
  .platforms-content { max-width: 560px; }
  .engagement { padding: 28px; }
  .engagement h3 { font-size: 1.625rem; }
  .approach { padding-top: 0; }
  .approach-grid { grid-template-columns: 1fr; padding-top: 60px; }
  .approach-intro > p:last-child { max-width: 550px; }
  .contact-grid { grid-template-columns: 1fr; gap: 38px; }
  .contact-details { border-left: 0; padding-left: 0; border-top: 1px solid #c6aa00; padding-top: 32px; }
  .email-link { font-size: 1.875rem; }
  .footer-inner { flex-wrap: wrap; }
  .copyright { order: 3; width: 100%; }
}
@media (max-width: 540px) {
  .container { width: calc(100% - 40px); }
  .hero { padding-top: 40px; }
  .hero h1 { font-size: clamp(2.75rem, 10.8vw, 3.5rem); }
  .hero-description { font-size: 1.1875rem; }
  .hero-detail { font-size: 1rem; }
  .hero-actions { gap: 20px; flex-wrap: wrap; }
  .hero .eyebrow { font-size: .75rem; letter-spacing: .065em; }
  .system-panel { padding: 18px 14px; }
  .panel-heading { padding-inline: 5px; }
  .panel-index { display: none; }
  .panel-footer { margin-inline: 5px; }
  .systems-diagram text[font-size="12"], .systems-diagram text[font-size="13"] { display: none; }
  .systems-diagram text[font-size="18"], .systems-diagram text[font-size="21"] { font-size: 24px; transform: translateY(8px); }
  .section { padding-block: 60px; }
  .section-heading { margin-bottom: 34px; }
  h2 { font-size: 2.25rem; }
  .problem-grid { grid-template-columns: 1fr; padding-top: 0; gap: 0; }
  .problem, .problem:first-child, .problem:nth-child(3), .problem:last-child { padding: 24px 0; border: 0; border-bottom: 1px solid #d3d5cb; }
  .problem-mark { margin-bottom: 10px; }
  .problem h3 { font-size: 1.25rem; margin-bottom: 10px; }
  .problem-closing { margin-top: 26px; }
  .service-row { grid-template-columns: 1fr; gap: 18px; padding-block: 28px; }
  .service-title { gap: 14px; }
  .service-title h3 { font-size: 1.625rem; }
  .service-title h3 br { display: none; }
  .service-number { width: 22px; }
  .service-tags { gap: 6px; }
  .platforms { padding-block: 40px; }
  .platforms h2 { font-size: 1.875rem; }
  .core-platforms { align-items: start; }
  .core-platforms > span:first-child { font-size: 1.5rem; }
  .core-platforms > span:last-child { font-size: .75rem; }
  .core-platforms strong { font-size: 1rem; }
  .engagement-grid { grid-template-columns: 1fr; gap: 18px; }
  .engagement { padding: 28px; }
  .engagement h3 { margin-top: 18px; }
  .approach { padding-top: 0; }
  .approach-grid { padding-top: 50px; gap: 34px; }
  .approach-intro h2 { font-size: 2.25rem; }
  .contact h2 { font-size: 2.625rem; }
  .email-link { font-size: 1.5rem; }
  .footer-inner { gap: 20px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}