:root {
  --ink: #141414;
  --ink-soft: #3d3d3d;
  --ink-muted: #5a5a5a;
  --label: #6b6b6b;
  --faint: #9a9a9a;
  --line: #e6e6e6;
  --line-grey: #d4d4d4;
  --grey: #f2f2f2;
  --pad-x: clamp(20px, 6vw, 96px);
  --measure: 1120px;
  /* One gutter shared by every band: page padding on small screens,
     centred column of --measure on wide ones. */
  --gutter: max(var(--pad-x), (100% - var(--measure)) / 2);
  --aside: 220px;
}

* { box-sizing: border-box; }
html { -webkit-font-smoothing: antialiased; }

body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  font-weight: 400;
  overflow-x: hidden;
}

a { color: var(--ink); text-underline-offset: 3px; }
a:hover { color: var(--ink-muted); }
::selection { background: var(--ink); color: #fff; }

h1, h2, .lead-serif {
  font-family: "Newsreader", Georgia, serif;
  font-weight: 400;
  margin: 0;
}

/* Header */
.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  padding: 28px var(--gutter);
  background: var(--ink);
  color: #fff;
}
.wordmark { font-family: "Newsreader", Georgia, serif; font-size: 22px; letter-spacing: -0.01em; }
.site-header .tagline { color: #b8b8b8; }

.label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--label);
}

/* Sections */
section { padding: clamp(44px, 7vw, 88px) var(--gutter); }
.grey { background: var(--grey); }
.inner {
  display: grid;
  gap: 20px clamp(32px, 5vw, 80px);
  grid-template-columns: var(--aside) minmax(0, 720px);
}
.inner > .body { min-width: 0; }
.inner > .label { padding-top: 6px; }

/* Hero */
.hero {
  padding: clamp(56px, 11vw, 132px) var(--gutter) clamp(48px, 8vw, 96px);
  border-bottom: 1px solid var(--line);
}
.hero-inner {
  display: grid;
  gap: clamp(28px, 4vw, 56px) clamp(32px, 5vw, 80px);
  align-items: end;
}
.hero h1 {
  font-size: clamp(34px, 5.6vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  max-width: 20ch;
  text-wrap: pretty;
}
.hero-copy { display: grid; gap: 28px; max-width: 62ch; }
.hero-copy p {
  margin: 0;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.6;
  color: var(--ink-soft);
  text-wrap: pretty;
}

/* Buttons */
.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 28px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
  text-decoration: none;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: #fff;
  transition: background .15s ease, color .15s ease;
}
.btn:hover { background: #fff; color: var(--ink); }
.btn-invert { background: #fff; color: var(--ink); border-color: #fff; }
.btn-invert:hover { background: var(--ink); color: #fff; }
.note { font-size: 13px; color: var(--label); }

/* Typographic blocks */
.lead-serif {
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  max-width: 34ch;
  margin-bottom: 20px;
}
.body p { margin: 0; font-size: 16px; line-height: 1.65; color: var(--ink-soft); max-width: 62ch; }
.body p + p { margin-top: 20px; }
.signature { display: flex; align-items: center; justify-content: flex-end; gap: 10px; font-size: 14px; color: var(--label); }
.linkedin { display: inline-flex; color: #BDBDBD; transition: color .15s ease; }
.linkedin:hover { color: var(--ink); }

/* Numbered steps */
.steps { display: grid; }
.step {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 20px;
  padding: 22px 0;
}
.step + .step { border-top: 1px solid var(--line); }
.step-num { font-size: 13px; font-weight: 500; color: var(--faint); padding-top: 4px; }
.step h3 { margin: 0 0 6px; font-size: 17px; font-weight: 500; font-family: inherit; }
.step p { margin: 0; font-size: 15px; line-height: 1.6; color: var(--ink-muted); max-width: 52ch; }

/* Definition rows */
.rows { display: grid; margin-top: 24px; }
.row {
  display: grid;
  grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
  gap: 24px;
  padding: 18px 0;
}
.row + .row { border-top: 1px solid var(--line-grey); }
.row dt, .row .term { font-size: 15px; font-weight: 500; }
.row dd, .row .def { margin: 0; font-size: 15px; line-height: 1.6; color: var(--ink-muted); max-width: 52ch; }

/* Closing CTA */
.close {
  padding: clamp(56px, 9vw, 112px) var(--gutter);
  background: var(--ink);
  color: #fff;
}
.close-inner {
  display: grid;
  gap: 32px clamp(32px, 5vw, 80px);
  align-items: end;
}
.close h2 {
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  max-width: 26ch;
}
.close p { margin: 0; font-size: 16px; line-height: 1.65; color: #b8b8b8; max-width: 54ch; }
.email-link { font-size: 15px; color: #b8b8b8; text-decoration: none; border-bottom: 1px solid var(--ink-muted); }
.email-link:hover { color: #fff; border-bottom-color: #fff; }

/* Footer */
.site-footer {
  padding: 24px var(--gutter) 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
}
.site-footer .legal {
  flex-basis: 100%;
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-style: normal;
  font-weight: 400;
  letter-spacing: 0.02em;
  text-transform: none;
  line-height: 1.6;
}
.site-footer .legal a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }

/* Wide screens: hero and closing band open into two columns that share
   the aside/body rhythm of the sections between them. */
@media (min-width: 1024px) {
  .hero-inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .hero-copy { padding-bottom: 6px; }
  .close-inner { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); align-items: start; }
  .close h2 { grid-row: 1; }
  .close p { grid-row: 1; grid-column: 2; padding-bottom: 6px; }
  .close .cta-row { grid-column: 1 / -1; padding-top: 8px; border-top: 1px solid #2e2e2e; }
}

@media (max-width: 760px) {
  .inner { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .inner > .label { padding-top: 0; }
}

@media (max-width: 640px) {
  .row { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .step { grid-template-columns: 28px minmax(0, 1fr); gap: 14px; }
}