:root {
  --ink: #121410;
  --ink-2: #2a2c26;
  --muted: #5c5f56;
  --paper: #eceae4;
  --paper-2: #e2dfd6;
  --rule: #c8c4b8;
  --green: #2f4738;
  --brass: #7a6840;
  --serif: "Newsreader", "Iowan Old Style", "Times New Roman", serif;
  --sans: "IBM Plex Sans", "Segoe UI", sans-serif;
  --wide: 1120px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, transparent 47px, rgba(18, 20, 16, 0.06) 47px, rgba(18, 20, 16, 0.06) 48px, transparent 48px),
    var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.skip {
  position: absolute;
  left: -999px;
}

.skip:focus {
  left: 16px;
  top: 16px;
  z-index: 10;
  background: var(--ink);
  color: var(--paper);
  padding: 8px 12px;
}

.top {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 16px 40px;
  background: rgba(236, 234, 228, 0.92);
  border-bottom: 1px solid var(--rule);
  backdrop-filter: blur(10px);
}

.mark {
  text-decoration: none;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.03em;
}

.mark span {
  display: none;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 22px;
  margin-left: auto;
}

.nav a,
.top-cta {
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.nav a:hover,
.top-cta:hover {
  color: var(--green);
}

.top-cta {
  border: 1px solid var(--ink);
  padding: 7px 12px;
}

main {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 40px 80px;
}

.hero {
  display: grid;
  grid-template-columns: 1fr 280px;
  grid-template-areas:
    "copy photo"
    "proof proof";
  gap: 36px 48px;
  align-items: end;
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--rule);
}

.hero-copy {
  grid-area: copy;
}

.hero-photo {
  grid-area: photo;
  margin: 0;
}

.hero-photo img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: grayscale(0.15) contrast(1.05);
}

.proof {
  grid-area: proof;
}

.eyebrow,
.num,
.case-kicker,
.when {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brass);
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: -0.03em;
}

h1 {
  margin: 0 0 24px;
  font-size: clamp(40px, 7vw, 72px);
  line-height: 0.95;
}

.lead {
  max-width: 640px;
  margin: 0 0 48px;
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.4;
  color: var(--ink-2);
}

.proof {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px 28px;
  margin: 0;
}

.proof div {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
}

.proof dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.proof dd {
  margin: 8px 0 0;
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.2;
}

.hero,
.block,
.contact {
  scroll-margin-top: 72px;
}

.block {
  padding: 72px 0;
  border-bottom: 1px solid var(--rule);
}

.block-head {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 16px;
  align-items: baseline;
  margin-bottom: 36px;
}

.block-head h2,
.contact h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
}

.adv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px 36px;
}

.adv-grid article,
.exp article {
  padding: 0;
}

.adv-grid h3,
.case h3,
.exp h3 {
  margin: 0 0 10px;
  font-size: 26px;
  line-height: 1.2;
}

.adv-grid p,
.case p,
.case li,
.exp p,
.exp li,
.method-lead,
.method-note,
.contact p,
.edu {
  margin: 0 0 12px;
  color: var(--ink-2);
}

.case {
  padding: 28px 0 8px;
}

.case + .case {
  border-top: 1px solid var(--rule);
}

.case ul,
.exp ul,
.steps {
  margin: 0 0 16px;
  padding-left: 20px;
}

.exp {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.meta {
  font-size: 15px;
  color: var(--muted);
}

.edu {
  margin: 28px 0 0;
  padding-left: 20px;
  font-size: 15px;
  color: var(--muted);
}

.edu li {
  margin-bottom: 6px;
}

.method-lead {
  font-family: var(--serif);
  font-size: 22px;
  max-width: 640px;
}

.steps {
  display: grid;
  gap: 18px;
  padding-left: 22px;
}

.steps li {
  color: var(--ink-2);
}

.method-note {
  color: var(--muted);
}

.contact {
  padding: 72px 0 24px;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  font-family: var(--serif);
  font-size: 28px;
}

.contact-links a {
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
}

.contact-links a:hover {
  border-bottom-color: var(--ink);
}

.fine {
  color: var(--muted);
  font-size: 15px;
}

.foot {
  display: flex;
  justify-content: space-between;
  max-width: var(--wide);
  margin: 0 auto;
  padding: 20px 40px 40px;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

@media (max-width: 860px) {
  .top,
  main,
  .foot {
    padding-left: 20px;
    padding-right: 20px;
  }

  body {
    background: var(--paper);
  }

  .top {
    flex-wrap: wrap;
  }

  .nav {
    order: 3;
    width: 100%;
    margin-left: 0;
    gap: 10px 14px;
  }

  .nav a {
    font-size: 11px;
  }

  .hero {
    grid-template-columns: 1fr;
    grid-template-areas:
      "copy"
      "photo"
      "proof";
  }

  .hero-photo {
    max-width: 220px;
  }

  .proof,
  .adv-grid,
  .exp,
  .block-head {
    grid-template-columns: 1fr;
  }

  .lead,
  .contact-links {
    font-size: 20px;
  }
}