body {
  background: var(--ink);
  color: var(--paper);
  line-height: 1.65;
}

code {
  display: inline-block;
  padding: 3px 7px;
  border: 1px solid rgba(8, 11, 16, .16);
  background: #10141b;
  color: var(--paper);
  font: 500 .9em DM Mono, monospace;
}

.excel-hero {
  min-height: calc(100svh - 76px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 520px);
  gap: clamp(34px, 6vw, 90px);
  align-items: end;
  padding: clamp(85px, 11vw, 145px) clamp(24px, 7vw, 110px) clamp(70px, 9vw, 110px);
}

.excel-hero-copy,
.sheet-demo {
  position: relative;
  z-index: 1;
}

.excel-hero h1 {
  max-width: 900px;
  margin: 24px 0 0;
  font-size: clamp(54px, 7.4vw, 112px);
  line-height: .88;
  letter-spacing: -.06em;
}

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

.excel-hero p:not(.page-kicker) {
  max-width: 720px;
  margin: 34px 0 0;
  color: #c8cac2;
  font-size: clamp(17px, 1.55vw, 22px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 0 18px;
  border: 1px solid var(--line);
  color: var(--paper);
  font: 700 12px DM Mono, monospace;
  text-decoration: none;
  text-transform: uppercase;
}

.button.primary,
.button:hover {
  border-color: var(--lime);
  background: var(--lime);
  color: var(--ink);
}

.sheet-demo {
  border: 1px solid var(--line);
  background: rgba(16, 20, 27, .84);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .28);
}

.formula-bar {
  display: grid;
  grid-template-columns: 54px 1fr;
  border-bottom: 1px solid var(--line);
}

.formula-bar span,
.formula-bar strong {
  padding: 14px 16px;
}

.formula-bar span {
  display: grid;
  place-items: center;
  border-right: 1px solid var(--line);
  color: var(--lime);
  font: 700 12px DM Mono, monospace;
}

.formula-bar strong {
  color: var(--paper);
  font: 500 13px DM Mono, monospace;
}

.mini-sheet {
  display: grid;
  grid-template-columns: 42px repeat(3, minmax(0, 1fr));
}

.mini-sheet > * {
  min-height: 44px;
  display: flex;
  align-items: center;
  padding: 9px 12px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: #d8d9d3;
  font-size: 14px;
}

.mini-sheet b {
  justify-content: center;
  background: rgba(241, 240, 234, .06);
  color: var(--muted);
  font: 600 11px DM Mono, monospace;
}

.mini-sheet strong {
  color: var(--lime);
  font-size: 13px;
}

.mini-sheet em {
  background: var(--lime);
  color: var(--ink);
  font-style: normal;
  font-weight: 800;
}

main {
  background: var(--paper);
  color: var(--ink);
}

.intro-grid,
.use-section,
.database-warning,
.compare-section,
.formula-section,
.lookup-demo,
.tips-section,
.reading-section {
  width: min(calc(100% - 48px), var(--content-max));
  margin: 0 auto;
}

.intro-grid,
.database-warning,
.tips-section {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(30px, 7vw, 92px);
  align-items: end;
  padding: clamp(78px, 10vw, 130px) 0;
}

.use-section,
.formula-section,
.lookup-demo,
.reading-section {
  padding: clamp(70px, 9vw, 115px) 0;
  border-top: 1px solid var(--dark-line);
}

.section-tag,
.use-grid article span,
.formula-card span,
.reading-grid span,
.excel-footer {
  font: 700 10px DM Mono, monospace;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.section-tag,
.use-grid article span,
.formula-card span,
.reading-grid span {
  color: var(--lime-dark);
}

.intro-grid h2,
.section-heading h2,
.database-warning h2,
.tips-section h2 {
  margin: 14px 0 0;
  font-size: clamp(36px, 5vw, 72px);
  line-height: 1;
  letter-spacing: -.055em;
}

.intro-grid p,
.section-heading p,
.database-warning p,
.compare-card li,
.formula-card p,
.lookup-result p,
.tips-list p,
.reading-grid p {
  color: #565951;
}

.callout {
  padding: 28px;
  border: 1px solid var(--dark-line);
  background: var(--lime);
}

.callout strong {
  font: 800 10px DM Mono, monospace;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.callout p {
  margin-bottom: 0;
  color: #30332d;
  font-size: 20px;
  line-height: 1.45;
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr .9fr;
  gap: clamp(28px, 6vw, 80px);
  align-items: end;
  margin-bottom: 44px;
}

.section-heading.compact {
  display: block;
  max-width: 820px;
}

.use-grid,
.formula-grid,
.reading-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--dark-line);
  border-left: 1px solid var(--dark-line);
}

.use-grid article,
.formula-card,
.reading-grid a {
  min-height: 260px;
  padding: 26px;
  border-right: 1px solid var(--dark-line);
  border-bottom: 1px solid var(--dark-line);
}

.use-grid h3,
.formula-card h3,
.reading-grid h3 {
  margin: auto 0 14px;
  font-size: clamp(24px, 2.4vw, 36px);
  line-height: 1.05;
  letter-spacing: -.045em;
}

.use-grid article,
.formula-card,
.reading-grid a {
  display: flex;
  flex-direction: column;
}

.database-warning {
  border-top: 1px solid var(--dark-line);
}

.database-warning h2 {
  color: var(--lime-dark);
}

.compare-section {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding-bottom: clamp(76px, 10vw, 130px);
}

.compare-card {
  padding: 30px;
  border: 1px solid var(--dark-line);
}

.compare-card + .compare-card {
  border-left: 0;
}

.compare-card h3 {
  margin: 0 0 18px;
  font-size: clamp(28px, 3.2vw, 46px);
  letter-spacing: -.045em;
  line-height: 1;
}

.compare-card.good {
  background: var(--lime);
}

.compare-card.bad {
  background: #f7f6f0;
}

.compare-card ul {
  margin: 0;
  padding-left: 20px;
}

.compare-card li + li {
  margin-top: 10px;
}

.formula-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.formula-card code {
  margin: 0 0 10px;
}

.formula-card.highlight {
  background: var(--ink);
  color: var(--paper);
}

.formula-card.highlight p {
  color: #c8cac2;
}

.formula-card.highlight span {
  color: var(--lime);
}

.lookup-layout {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 0;
  border: 1px solid var(--dark-line);
}

.lookup-table {
  border-right: 1px solid var(--dark-line);
}

.lookup-row {
  display: grid;
  grid-template-columns: .7fr 1fr .7fr;
}

.lookup-row span {
  padding: 16px;
  border-right: 1px solid var(--dark-line);
  border-bottom: 1px solid var(--dark-line);
}

.lookup-row span:last-child {
  border-right: 0;
}

.lookup-row.head {
  background: var(--ink);
  color: var(--lime);
  font: 700 10px DM Mono, monospace;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.lookup-row.active {
  background: var(--lime);
  font-weight: 800;
}

.lookup-result {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
  padding: 30px;
}

.lookup-result span {
  color: var(--lime-dark);
  font: 700 10px DM Mono, monospace;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.lookup-result strong {
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1;
  letter-spacing: -.045em;
}

.tips-section {
  border-top: 1px solid var(--dark-line);
}

.tips-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--dark-line);
}

.tips-list article {
  padding: 18px 0;
  border-bottom: 1px solid var(--dark-line);
}

.tips-list strong {
  display: block;
  font-size: 20px;
  letter-spacing: -.02em;
}

.tips-list p {
  margin: 8px 0 0;
}

.reading-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.reading-grid a {
  position: relative;
  min-height: 260px;
  color: var(--ink);
  text-decoration: none;
}

.reading-grid a:hover {
  background: var(--lime);
}

.reading-grid i {
  position: absolute;
  right: 24px;
  top: 22px;
  color: var(--lime-dark);
  font-style: normal;
  font-size: 24px;
}

.excel-footer {
  min-height: 96px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 24px clamp(20px, 4vw, 72px);
  border-top: 1px solid var(--line);
  background: var(--ink);
  color: var(--muted);
}

.excel-footer a {
  color: inherit;
  text-decoration: none;
}

.excel-footer > a:last-child:hover {
  color: var(--lime);
}

@media (max-width: 1020px) {
  .excel-hero,
  .intro-grid,
  .database-warning,
  .tips-section,
  .section-heading,
  .lookup-layout {
    grid-template-columns: 1fr;
  }

  .use-grid,
  .formula-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .lookup-table {
    border-right: 0;
    border-bottom: 1px solid var(--dark-line);
  }
}

@media (max-width: 680px) {
  .excel-hero {
    min-height: auto;
    padding: 78px 20px 62px;
  }

  .excel-hero h1 {
    font-size: 48px;
  }

  .button {
    width: 100%;
  }

  .intro-grid,
  .use-section,
  .database-warning,
  .compare-section,
  .formula-section,
  .lookup-demo,
  .tips-section,
  .reading-section {
    width: calc(100% - 40px);
  }

  .use-grid,
  .formula-grid,
  .reading-grid,
  .compare-section {
    grid-template-columns: 1fr;
  }

  .compare-card + .compare-card {
    border-left: 1px solid var(--dark-line);
    border-top: 0;
  }

  .sheet-demo {
    overflow-x: auto;
  }

  .mini-sheet {
    min-width: 430px;
  }

  .lookup-row {
    grid-template-columns: .75fr 1fr .75fr;
  }

  .lookup-row span {
    padding: 13px 10px;
    font-size: 13px;
  }

  .excel-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

.excel-downloads {
  width: min(calc(100% - 48px), var(--content-max));
  margin: 0 auto;
  padding: clamp(70px, 9vw, 115px) 0;
  border-top: 1px solid var(--dark-line);
}
.excel-downloads .section-heading { max-width: 900px; }
.excel-download-group { margin-top: 44px; }
.excel-download-group h3 { margin: 0 0 18px; font-size: clamp(23px, 3vw, 34px); letter-spacing: -.04em; }
.excel-download-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.excel-download-card { display: flex; flex-direction: column; min-width: 0; padding: 24px; border: 1px solid var(--dark-line); background: #fff; color: var(--ink); }
.excel-file-type { color: var(--lime-dark); font: 700 10px DM Mono, monospace; letter-spacing: .08em; }
.excel-download-card h4 { margin: 16px 0 8px; font-size: 21px; line-height: 1.18; letter-spacing: -.035em; }
.excel-download-card p { margin: 0 0 24px; color: #565951; line-height: 1.55; }
.excel-download-card a { display: inline-flex; justify-content: space-between; align-items: center; gap: 16px; margin-top: auto; padding: 11px 13px; border: 1px solid var(--ink); color: var(--ink); font: 700 11px DM Mono, monospace; text-decoration: none; }
.excel-download-card a:hover, .excel-download-card a:focus-visible { background: var(--lime); border-color: var(--lime-dark); }
.excel-download-card a span { font-size: 18px; }
.excel-download-note { margin: 25px 0 0; color: #62675f; font-size: 14px; }
@media (max-width: 1020px) { .excel-download-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 680px) { .excel-downloads { width: calc(100% - 40px); } .excel-download-grid { grid-template-columns: 1fr; } }