:root {
  --color-bg: #ffffff;
  --color-bg-secondary: #f5f5f5;
  --color-bg-dark: #111111;
  --color-text: #111111;
  --color-text-secondary: #666666;
  --color-border: rgba(0, 0, 0, 0.12);
  --color-border-dark: rgba(255, 255, 255, 0.16);
  --color-brand-red: #d71920;
  --color-brand-red-dark: #a90f16;
  --color-action-dark: #050505;
  --color-action-dark-hover: #191919;
  --color-focus-ring: rgba(215, 25, 32, 0.14);
  --shadow-subtle: 0 18px 44px rgba(5, 5, 5, 0.08);
  --shadow-soft: 0 22px 60px rgba(5, 5, 5, 0.1);
  --radius-xs: 4px;
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-pill: 999px;
  --font-sans: "SF Pro Display", "SF Pro Text", Sora, Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-size-label: clamp(0.75rem, 0.78vw, 0.875rem);
  --font-size-body: clamp(1rem, 0.96vw, 1.0625rem);
  --font-size-card-heading: clamp(1.2rem, 1.5vw, 1.5rem);
  --font-size-section-heading: clamp(2.15rem, 4.2vw, 4rem);
  --font-size-hero-heading: clamp(2.7rem, 7vw, 5.4rem);
  --line-height-body: 1.6;
  --page-max-width: 90rem;
  --content-max-width: 75rem;
  --page-gutter: clamp(1.125rem, 4vw, 3.5rem);
  --section-space-desktop: clamp(6rem, 8vw, 8rem);
  --section-space-mobile: clamp(3.5rem, 6vw, 4.5rem);
  --transition-fast: 200ms ease;
  --transition-base: 260ms ease;
  --transition-slow: 320ms ease;
}

html {
  font-family: var(--font-sans);
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--color-text);
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.08;
}

h1 {
  font-size: var(--font-size-hero-heading);
}

h2 {
  font-size: var(--font-size-section-heading);
}

h3 {
  font-size: var(--font-size-card-heading);
}

p,
li,
input,
textarea,
select {
  color: var(--color-text-secondary);
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
}

small,
.text-xs {
  font-size: var(--font-size-label);
}

.btn-primary,
.btn-secondary,
.btn-outline,
.btn-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.7rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.2;
  text-align: center;
  transition:
    background-color var(--transition-base),
    border-color var(--transition-base),
    color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast);
}

.btn-primary {
  background: var(--color-action-dark);
  color: #ffffff;
  box-shadow: none;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-action-dark-hover);
  transform: translateY(-1px);
}

.btn-secondary,
.btn-outline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
  box-shadow: none;
}

.btn-secondary:hover,
.btn-secondary:focus-visible,
.btn-outline:hover,
.btn-outline:focus-visible {
  background: var(--color-bg-secondary);
  border-color: var(--color-text);
  transform: translateY(-1px);
}

.btn-danger {
  background: var(--color-brand-red);
  border-color: var(--color-brand-red);
  color: #ffffff;
}

.btn-danger:hover,
.btn-danger:focus-visible {
  background: var(--color-brand-red-dark);
  border-color: var(--color-brand-red-dark);
}

.input,
.cta-input {
  width: 100%;
  min-height: 2.9rem;
  padding: 0.78rem 0.95rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  box-shadow: none;
}

.input::placeholder,
.cta-input::placeholder,
textarea::placeholder {
  color: #8a8a8a;
}

.input:focus,
.cta-input:focus,
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.btn-outline:focus-visible,
.btn-danger:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px var(--color-focus-ring);
}

.section,
.nav-inner,
.footer-inner {
  max-width: var(--page-max-width);
}

.section {
  padding-left: var(--page-gutter);
  padding-right: var(--page-gutter);
}

.site-body > section,
.site-body > .section {
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 767px) {
  :root {
    --page-gutter: 20px;
  }

  h1 {
    font-size: min(var(--font-size-hero-heading), 2.5rem);
  }

  h2 {
    font-size: min(var(--font-size-section-heading), 1.875rem);
  }
}