:root {
  --carbon: #111111;
  --graphite: #1c1c1a;
  --slate: #2a2a27;
  --steel: #8a8a86;
  --silver: #c8c8c2;
  --paper: #f2f1ed;
  --white: #ffffff;
  --signal: #f04a2d;
  --signal-deep: #d63e23;
  --line-dark: #33332f;
  --line-light: #bdbdb6;
  --max: 1540px;
  --pad: clamp(22px, 4vw, 64px);
  --section: clamp(76px, 9vw, 136px);
  --radius: 999px;
  --ease: 180ms ease;
}

* { box-sizing: border-box; }
html { background: var(--carbon); color: var(--paper); scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: var(--carbon);
  color: var(--paper);
  font-size: 17px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
::selection { background: var(--signal); color: var(--carbon); }

.skip-link {
  position: fixed; left: 12px; top: 12px; z-index: 100;
  transform: translateY(-180%); background: var(--paper); color: var(--carbon);
  padding: 10px 14px; border-radius: var(--radius); font-weight: 700;
}
.skip-link:focus { transform: translateY(0); }

.shell { width: min(100%, var(--max)); margin: 0 auto; padding-inline: var(--pad); }
.site-header {
  position: sticky; top: 0; z-index: 30; height: 82px;
  background: var(--carbon);
  border-bottom: 1px solid var(--line-dark);
}
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand {
  font-size: 27px; line-height: 1; letter-spacing: -0.05em; font-weight: 650;
  white-space: nowrap;
}
.nav { display: flex; align-items: center; gap: 28px; color: var(--silver); font-size: 15px; }
.nav a { transition: color var(--ease), background var(--ease); }
.nav a:hover, .nav a[aria-current="page"] { color: var(--white); }
.nav-toggle {
  display: none; border: 0; background: transparent; color: var(--paper); cursor: pointer;
  padding: 8px; margin-right: -8px;
}
.nav-toggle span { display: block; width: 22px; height: 1px; background: currentColor; margin: 5px 0; }

.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 18px; border-radius: var(--radius);
  background: var(--signal); color: var(--carbon); font-weight: 650;
  letter-spacing: -0.02em; transition: transform var(--ease), background var(--ease);
}
.button:hover { background: #ff5b3e; transform: translateY(-1px); }
.button.dark { background: var(--carbon); color: var(--paper); }
.button.dark:hover { background: #000; }
.text-link { display: inline-block; font-weight: 650; border-bottom: 1px solid currentColor; padding-bottom: 3px; }

.hero {
  min-height: calc(100svh - 82px); padding-block: clamp(84px, 11vw, 168px) 58px;
  display: flex; flex-direction: column; justify-content: space-between; gap: 68px;
}
.hero-kicker { color: var(--steel); font-size: 15px; max-width: 690px; }
.hero h1 {
  margin: 26px 0 38px; max-width: 1180px;
  font-size: clamp(62px, 9.1vw, 145px); line-height: 0.98;
  letter-spacing: -0.045em; font-weight: 650;
}
.hero-copy {
  margin: 0; max-width: 820px; color: var(--silver);
  font-size: clamp(21px, 2.25vw, 33px); line-height: 1.2; letter-spacing: -0.04em;
}
.hero-actions { margin-top: 34px; display: flex; gap: 18px; align-items: center; }
.operating-strip {
  display: grid; grid-template-columns: repeat(7, 1fr);
  border-top: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark);
}
.operating-strip span { padding: 15px 12px 15px 0; color: var(--silver); font-size: 14px; position: relative; }
.operating-strip span:not(:last-child)::after { content: "→"; position: absolute; right: 14px; color: #55554f; }

.section { padding-block: var(--section); }
.section.rule { border-top: 1px solid var(--line-dark); }
.section.light { background: var(--paper); color: var(--carbon); }
.section.signal { background: var(--signal); color: var(--carbon); }
.section.graphite { background: var(--graphite); }
.section-head {
  display: grid; grid-template-columns: minmax(160px, .72fr) minmax(0, 2fr); gap: clamp(22px, 4vw, 72px);
  align-items: start; margin-bottom: clamp(46px, 6vw, 82px);
}
.kicker { font-size: 14px; color: var(--steel); }
.section.light .kicker { color: #5f5f5a; }
.section.signal .kicker { color: #64170b; }
h2 {
  margin: 0; max-width: 1040px; font-size: clamp(42px, 5.2vw, 78px); line-height: .96;
  letter-spacing: -0.058em; font-weight: 650;
}
h3 { margin: 0; font-size: clamp(26px, 2.4vw, 34px); line-height: 1.04; letter-spacing: -0.045em; font-weight: 650; }
.lede { margin: 0; max-width: 940px; color: var(--silver); font-size: clamp(22px, 2.5vw, 35px); line-height: 1.2; letter-spacing: -0.042em; }
.section.light .lede { color: #575752; }
.body-large { font-size: clamp(20px, 1.7vw, 27px); line-height: 1.34; letter-spacing: -0.03em; max-width: 900px; }
.muted { color: var(--steel); }
.section.light .muted { color: #60605c; }

.capability-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line-dark); }
.capability {
  min-height: 320px; padding: 26px 28px 42px 0; border-bottom: 1px solid var(--line-dark);
  display: flex; flex-direction: column;
}
.capability:not(:last-child) { border-right: 1px solid var(--line-dark); padding-right: 30px; margin-right: 30px; }
.capability-number { color: var(--signal); font-size: 14px; margin-bottom: auto; padding-bottom: 70px; }
.capability p { margin: 18px 0 0; color: var(--steel); max-width: 390px; }
.capability .text-link { margin-top: 28px; align-self: flex-start; color: var(--silver); }

.system-map { margin-top: 12px; border-top: 1px solid var(--line-light); border-bottom: 1px solid var(--line-light); padding-block: 50px 36px; }
.flow { display: grid; grid-template-columns: repeat(6, 1fr); position: relative; }
.flow::before { content: ""; position: absolute; left: 0; right: 0; top: 17px; border-top: 1px solid #888883; }
.node { position: relative; padding-top: 50px; color: #565651; font-size: 15px; }
.node::before {
  content: ""; position: absolute; width: 10px; height: 10px; border: 2px solid var(--carbon); background: var(--paper);
  border-radius: 50%; left: 0; top: 12px; z-index: 2;
}
.control-layer {
  margin-top: 40px; background: #e5e4de; border-left: 4px solid var(--signal);
  display: grid; grid-template-columns: .72fr 2fr; gap: 28px; padding: 24px 26px;
}
.control-layer strong { font-size: 19px; letter-spacing: -0.025em; }
.control-layer p { margin: 0; max-width: 760px; color: #4f4f4a; }

.principles { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line-dark); }
.principle { min-height: 235px; padding: 26px 30px 32px 0; border-bottom: 1px solid var(--line-dark); }
.principle:not(:last-child) { border-right: 1px solid var(--line-dark); margin-right: 30px; padding-right: 30px; }
.principle p { color: var(--steel); margin: 18px 0 0; max-width: 370px; }

.signal-panel { display: grid; grid-template-columns: .72fr 2fr; gap: clamp(22px, 4vw, 72px); align-items: end; }
.signal-panel h2 { max-width: 1120px; }
.signal-actions { margin-top: 34px; }

.page-hero { padding-block: clamp(90px, 10vw, 145px) clamp(64px, 7vw, 100px); border-bottom: 1px solid var(--line-dark); }
.page-hero h1 {
  margin: 0 0 34px; max-width: 1100px; font-size: clamp(58px, 8vw, 126px); line-height: .9;
  letter-spacing: -0.064em; font-weight: 650;
}
.page-hero p { margin: 0; max-width: 840px; color: var(--silver); font-size: clamp(21px, 2.2vw, 32px); line-height: 1.22; letter-spacing: -0.04em; }

.detail-grid { display: grid; grid-template-columns: minmax(180px, .72fr) 2fr; gap: clamp(24px, 5vw, 90px); }
.detail-label { color: var(--steel); font-size: 14px; }
.detail-body { max-width: 1000px; }
.service-list { margin: 36px 0 0; border-top: 1px solid var(--line-dark); }
.service-row {
  display: grid; grid-template-columns: minmax(220px, .9fr) 1.5fr; gap: 38px;
  padding-block: 22px; border-bottom: 1px solid var(--line-dark);
}
.service-row strong { font-weight: 650; }
.service-row span { color: var(--steel); }

.statement { max-width: 1020px; font-size: clamp(31px, 4.4vw, 67px); line-height: 1.02; letter-spacing: -0.052em; margin: 0; }
.company-copy { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 96px); }
.company-copy p { margin: 0; color: var(--silver); font-size: 20px; line-height: 1.45; letter-spacing: -0.025em; }

.contact-card { border-top: 1px solid var(--line-dark); padding-top: 30px; max-width: 920px; }
.contact-email {
  display: inline-block; margin-top: 18px; font-size: clamp(34px, 5vw, 72px); line-height: 1;
  letter-spacing: -0.055em; font-weight: 650; border-bottom: 2px solid var(--signal); padding-bottom: 8px;
}
.contact-note { margin-top: 34px; color: var(--steel); max-width: 690px; }

.legal { max-width: 900px; }
.legal h1 { font-size: clamp(46px, 6vw, 88px); margin: 0 0 28px; letter-spacing: -0.055em; line-height: .95; }
.legal h2 { font-size: 28px; margin-top: 52px; letter-spacing: -0.035em; }
.legal p, .legal li { color: var(--silver); }
.legal ul { padding-left: 22px; }

.site-footer { border-top: 1px solid var(--line-dark); padding-block: 42px 50px; color: var(--steel); font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr .7fr .7fr; gap: 28px; }
.footer-title { color: var(--paper); font-size: 18px; font-weight: 650; letter-spacing: -0.035em; margin-bottom: 8px; }
.footer-nav { display: flex; flex-direction: column; gap: 7px; }
.footer-nav a:hover { color: var(--paper); }

/* Site refinements */
:focus-visible { outline: 2px solid var(--signal); outline-offset: 4px; }
main section[id] { scroll-margin-top: 100px; }
.brand, .footer-title { display: inline-block; }
.hero { padding-top: clamp(86px, 10vw, 158px); }
.hero h1 { max-width: none; font-size: clamp(54px, 8.5vw, 134px); margin: 26px 0 42px; }
.hero-bottom { display: grid; grid-template-columns: minmax(0, 1fr) minmax(230px, .45fr); gap: 40px; align-items: end; }
.hero-copy { max-width: 790px; }
.hero-actions { align-items: flex-start; flex-direction: column; margin: 0 0 5px; gap: 20px; }
.hero-actions .text-link { font-size: 15px; }
.operating-strip { margin-top: 50px; }
.step { display: block; color: var(--signal); font-size: 14px; margin-bottom: 42px; }
.principle { min-height: 280px; }
.principle p { color: var(--silver); }
.capability p { color: var(--silver); }
.capability .text-link { font-size: 15px; }
.section.signal { background: var(--carbon); color: var(--paper); border-top: 1px solid var(--line-dark); }
.section.signal .kicker { color: var(--signal); }
.section.signal .button.dark { background: var(--signal); color: var(--carbon); }
.section.signal .button.dark:hover { background: #ff5b3e; }
.page-hero .kicker, .legal .kicker { display: block; margin-bottom: 38px; }
.page-hero h1 { margin-bottom: 30px; }
.detail-body > .body-large { margin: 30px 0 0; }
.detail-body > .text-link { margin-top: 30px; }
.section.light .body-large { color: #51514b; margin: 24px 0 32px; }
.section-head.compact { margin-bottom: 0; }
.spaced { margin-top: 42px; }
.contact-pending { font-size: clamp(25px, 4vw, 48px); letter-spacing: -.04em; max-width: 800px; }
.contact-email { overflow-wrap: anywhere; }
.legal { padding-bottom: 150px; }
.legal a { text-decoration: underline; text-underline-offset: 3px; }
.legal h2 { line-height: 1.15; }
.legal p { line-height: 1.6; }
.footer-title { text-decoration: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

@media (max-width: 900px) {
  .site-header { height: 72px; }
  .brand { font-size: 23px; }
  .nav-toggle { display: block; }
  .nav {
    display: none; position: absolute; top: 72px; left: 0; right: 0; background: var(--carbon);
    border-bottom: 1px solid var(--line-dark); padding: 20px var(--pad) 24px; flex-direction: column; align-items: stretch; gap: 0;
  }
  .nav.open { display: flex; }
  .nav a { padding: 13px 0; font-size: 18px; }
  .nav .button { margin-top: 10px; color: var(--carbon); }
  .hero { min-height: calc(100svh - 72px); padding-top: 74px; }
  .operating-strip { grid-template-columns: repeat(2, 1fr); }
  .operating-strip span { border-bottom: 1px solid #2d2d2a; padding: 12px 20px 12px 0; }
  .operating-strip span::after { display: none; }
  .section-head, .signal-panel, .detail-grid { grid-template-columns: 1fr; }
  .capability-grid, .principles { grid-template-columns: 1fr; }
  .capability, .principle { min-height: auto; }
  .capability:not(:last-child), .principle:not(:last-child) { border-right: 0; margin-right: 0; padding-right: 0; }
  .capability-number { margin-bottom: 34px; }
  .flow { grid-template-columns: 1fr; }
  .flow::before { left: 5px; right: auto; top: 0; bottom: 0; border-top: 0; border-left: 1px solid #888883; }
  .node { padding: 0 0 30px 35px; }
  .node::before { top: 4px; }
  .control-layer { grid-template-columns: 1fr; }
  .service-row { grid-template-columns: 1fr; gap: 8px; }
  .company-copy { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-bottom { grid-template-columns: 1fr; gap: 28px; }
  .hero-actions { flex-direction: row; align-items: center; flex-wrap: wrap; }
  .step { margin-bottom: 28px; }
  .principle { min-height: auto; }
}

@media (max-width: 560px) {
  :root { --pad: 20px; }
  body { font-size: 16px; }
  .hero h1 { font-size: clamp(40px, 11.3vw, 64px); letter-spacing: -.035em; max-width: 100%; line-height: 1.04; }
  .hero-copy { font-size: 21px; }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .page-hero h1 { font-size: clamp(43px, 11.5vw, 70px); overflow-wrap: break-word; }
  .contact-email { font-size: clamp(30px, 9.5vw, 46px); }
  .hero { min-height: calc(100svh - 72px); padding-top: 76px; gap: 55px; }
  .operating-strip { margin-top: 0; }
  .flow .node { color: #3d3d38; }
}