:root {
  --ert-ink: #0b0c0e;
  --ert-night: #101114;
  --ert-graphite: #1c1e22;
  --ert-champagne: #b8a784;
  --ert-sand: #d8d8d2;
  --ert-pearl: #eceeeb;
  --ert-paper: #f5f6f4;
  --ert-white: #ffffff;
  --ert-muted: #65686c;
  --ert-line: rgba(11, 12, 14, 0.16);
  --ert-line-dark: rgba(255, 255, 255, 0.16);

  --ert-font-display: "Instrument Sans", Arial, sans-serif;
  --ert-font-sans: "DM Sans", Arial, sans-serif;
  --ert-font-mono: "DM Mono", monospace;

  --ert-radius-sm: 3px;
  --ert-radius-md: 4px;
  --ert-radius-lg: 6px;
  --ert-radius-photo: 4px;

  --ert-shadow-soft: 0 14px 44px rgba(17, 17, 15, 0.08);
  --ert-shadow-card: 0 22px 60px rgba(17, 17, 15, 0.14);
  --ert-ease: cubic-bezier(0.2, 0.75, 0.2, 1);
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ert-ink);
  background: var(--ert-paper);
  font-family: var(--ert-font-sans);
  -webkit-font-smoothing: antialiased;
}

body,
button,
input,
select,
textarea {
  font-family: var(--ert-font-sans);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin-block: 0;
  color: var(--ert-ink);
  font-family: var(--ert-font-display);
  font-weight: 600;
  letter-spacing: -0.052em;
  font-feature-settings: "ss01" 1, "ss02" 1;
}

p:last-child {
  margin-bottom: 0;
}

a,
button,
input,
select,
textarea {
  outline-offset: 4px;
}

:focus-visible {
  outline: 2px solid var(--ert-champagne);
}

.ert-shell {
  width: min(calc(100% - 56px), 1320px);
  margin-inline: auto;
}

.ert-kicker {
  font-family: var(--ert-font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.13em;
  line-height: 1.5;
  text-transform: uppercase;
}

.ert-display {
  font-size: clamp(4.2rem, 7.2vw, 8.2rem);
  font-weight: 650;
  line-height: 0.88;
}

.ert-section-title {
  font-size: clamp(3rem, 5vw, 5.8rem);
  font-weight: 650;
  line-height: 0.92;
}

.ert-button {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 0 22px;
  border: 1px solid var(--ert-ink);
  border-radius: var(--ert-radius-md);
  color: var(--ert-white);
  background: var(--ert-ink);
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-decoration: none;
  text-transform: uppercase;
  transition: transform 220ms var(--ert-ease), background-color 220ms var(--ert-ease);
}

.ert-button:hover {
  color: var(--ert-white);
  background: var(--ert-graphite);
  transform: translateY(-2px);
}

@media (max-width: 767px) {
  .ert-shell {
    width: min(calc(100% - 28px), 1320px);
  }

  .ert-display {
    font-size: clamp(3.4rem, 16vw, 5.3rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}