:root {
  --ink: #0B1D28;
  --bone: #EDE6D6;
  --flare: #E4572E;
  --slate: #7E96A6;
  --hairline: #1E3648;
  --sora: "Sora", ui-sans-serif, system-ui, sans-serif;
  --plex: "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--ink);
  color: var(--bone);
  font-family: var(--plex);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--flare); color: var(--ink); }

a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--flare);
  outline-offset: 3px;
}

/* ---------- header ---------- */

.site-header {
  display: flex;
  align-items: baseline;
  gap: 48px;
  padding: 28px 48px 27px;
  border-bottom: 1px solid var(--hairline);
  position: sticky;
  top: 0;
  background: var(--ink);
  z-index: 10;
}

.wordmark {
  font-family: var(--sora);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.01em;
}

.site-header nav {
  display: flex;
  gap: 32px;
}

.site-header nav a {
  font-family: var(--plex);
  font-size: 14px;
  color: var(--slate);
  transition: color 140ms ease;
}

.site-header nav a:hover { color: var(--bone); }

.nav-no {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--flare);
  margin-right: 6px;
  vertical-align: 2px;
}

.coords {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--slate);
}

/* ---------- hero ---------- */

.hero {
  display: grid;
  grid-template-columns: minmax(48px, 1fr) minmax(0, 11fr) minmax(48px, 2fr);
  padding: 128px 0 96px;
  position: relative;
}

.hero > * { grid-column: 2; }

.kicker {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--flare);
  margin-bottom: 36px;
}

.hero h1 {
  font-family: var(--sora);
  font-weight: 600;
  font-size: clamp(40px, 7.2vw, 88px);
  line-height: 1.04;
  letter-spacing: -0.015em;
  max-width: 14ch;
}

.hero h1 em {
  font-style: normal;
  color: var(--flare);
}

.hero-aside {
  margin-top: 56px;
  margin-left: clamp(0px, 22vw, 320px);
  max-width: 460px;
}

.hero-aside p {
  color: var(--slate);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-top: 32px;
}

.btn {
  font-family: var(--sora);
  font-weight: 600;
  font-size: 15px;
  color: var(--ink);
  background: var(--flare);
  padding: 14px 28px;
  border-radius: 2px;
  transition: transform 140ms ease, background 140ms ease;
}

.btn:hover { background: #F0663D; transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.textlink {
  font-family: var(--mono);
  font-size: 14px;
  border-bottom: 1px solid var(--flare);
  padding-bottom: 3px;
}

.textlink .arrow {
  display: inline-block;
  margin-left: 8px;
  transition: transform 160ms ease;
}

.textlink:hover .arrow { transform: translateX(6px); }

.hero-rule {
  grid-column: 2;
  margin-top: 96px;
  border-bottom: 1px solid var(--hairline);
}

/* ---------- section scaffolding ---------- */

section { padding: 0 48px; }

.section-head {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr) minmax(0, 1fr);
  align-items: baseline;
  gap: 24px;
  padding: 88px 0 48px;
}

.section-no {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--flare);
}

.section-head h2 {
  font-family: var(--sora);
  font-weight: 600;
  font-size: clamp(28px, 3.4vw, 42px);
  letter-spacing: -0.01em;
}

.section-note {
  color: var(--slate);
  font-size: 15px;
  max-width: 38ch;
  justify-self: end;
  text-align: left;
}

/* ---------- services ledger ---------- */

.services { padding-bottom: 32px; }

.ledger {
  list-style: none;
  border-top: 1px solid var(--hairline);
}

.ledger li { border-bottom: 1px solid var(--hairline); }

.ledger a {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr) 160px;
  gap: 24px;
  align-items: baseline;
  padding: 34px 8px 34px 0;
  transition: transform 180ms ease, background 180ms ease;
}

.ledger a:hover { transform: translateX(12px); }

.row-no {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--slate);
  transition: color 140ms ease;
}

.ledger a:hover .row-no { color: var(--flare); }

.row-title {
  display: block;
  font-family: var(--sora);
  font-weight: 600;
  font-size: clamp(21px, 2.4vw, 28px);
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.row-desc {
  display: block;
  color: var(--slate);
  font-size: 16px;
  max-width: 56ch;
}

.row-tag {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--slate);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  justify-self: end;
  border: 1px solid var(--hairline);
  padding: 6px 12px;
  transition: border-color 140ms ease, color 140ms ease;
}

.ledger a:hover .row-tag {
  border-color: var(--flare);
  color: var(--bone);
}

/* ---------- approach ---------- */

.approach { padding-bottom: 40px; }

.principles {
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 4fr) minmax(0, 4fr);
  gap: 56px;
  padding-left: 144px;
  padding-bottom: 56px;
}

.principles li:nth-child(2) { margin-top: 48px; }
.principles li:nth-child(3) { margin-top: 96px; }

.principles svg {
  color: var(--flare);
  margin-bottom: 20px;
}

.principles h3 {
  font-family: var(--sora);
  font-weight: 600;
  font-size: 20px;
  margin-bottom: 12px;
}

.principles p {
  color: var(--slate);
  font-size: 15.5px;
}

/* ---------- about ---------- */

.about { border-top: 1px solid var(--hairline); padding-bottom: 64px; }

.about-body {
  padding-left: 144px;
  max-width: 620px;
}

.about-body .lede {
  font-family: var(--sora);
  font-weight: 400;
  font-size: 26px;
  line-height: 1.35;
  margin-bottom: 24px;
}

.about-body p + p { color: var(--slate); }

/* ---------- contact ---------- */

.contact {
  border-top: 1px solid var(--hairline);
  padding-bottom: 120px;
}

.contact-body { padding-left: 144px; }

.contact-line {
  color: var(--slate);
  margin-bottom: 40px;
}

.contact-big {
  display: inline-block;
  font-family: var(--sora);
  font-weight: 600;
  font-size: clamp(30px, 5.4vw, 64px);
  letter-spacing: -0.015em;
  border-bottom: 3px solid var(--flare);
  padding-bottom: 6px;
  transition: color 160ms ease;
}

.contact-big:hover { color: var(--flare); }

.contact-mid {
  display: block;
  font-family: var(--mono);
  font-size: 19px;
  color: var(--slate);
  margin-top: 28px;
  transition: color 140ms ease;
}

.contact-mid:hover { color: var(--bone); }

/* ---------- footer ---------- */

.site-footer {
  display: flex;
  gap: 32px;
  padding: 26px 48px;
  border-top: 1px solid var(--hairline);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--slate);
}

.site-footer p:last-child { margin-left: auto; }

/* ---------- scroll reveal (progressive enhancement) ---------- */

@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .ledger li, .principles li {
      animation: rise both;
      animation-timeline: view();
      animation-range: entry 0% entry 42%;
    }
    @keyframes rise {
      from { opacity: 0; transform: translateY(18px); }
      to { opacity: 1; transform: none; }
    }
  }
}

/* ---------- responsive ---------- */

@media (max-width: 960px) {
  .principles {
    grid-template-columns: 1fr;
    padding-left: 120px;
    gap: 40px;
  }
  .principles li:nth-child(2), .principles li:nth-child(3) { margin-top: 0; }
  .section-note { justify-self: start; }
  .section-head { grid-template-columns: 96px 1fr; }
  .section-note { grid-column: 2; }
}

@media (max-width: 720px) {
  .site-header { padding: 20px 24px; gap: 24px; }
  .site-header nav { gap: 18px; }
  .site-header nav a { font-size: 13px; }
  .coords { display: none; }
  .nav-no { display: none; }

  section { padding-left: 24px; padding-right: 24px; }

  .hero { padding: 72px 0 56px; grid-template-columns: 24px 1fr 24px; }
  .hero-aside { margin-left: 0; margin-top: 40px; }
  .hero-rule { margin-top: 56px; }

  .section-head {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 56px 0 32px;
  }

  .ledger a {
    grid-template-columns: 48px 1fr;
    padding: 26px 0;
  }
  .row-tag { display: none; }
  .ledger a:hover { transform: none; }

  .principles, .about-body, .contact-body { padding-left: 0; }

  .site-footer { flex-direction: column; gap: 6px; padding: 24px; }
  .site-footer p:last-child { margin-left: 0; }
}