*, *::before, *::after { box-sizing: border-box; }
html { font-size: 16px; }
body { margin: 0; font-family: var(--font-body); line-height: 1.55; color: var(--color-text); background: var(--color-bg); }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; }

:root {
  color-scheme: light;
  --color-primary: #173b69;
  --color-primary-hover: #0f2c50;
  --color-secondary: #496d98;
  --color-accent: #ae3945;
  --color-bg: #f4f7fb;
  --color-surface: #ffffff;
  --color-text: #172b45;
  --color-text-muted: #52657c;
  --color-border: #cad5e2;
  --color-border-soft: #e2e9f1;
  --color-focus: #2369ae;
  --color-success: #175a47;
  --color-success-bg: #e7f5ee;
  --color-warning: #825419;
  --color-warning-bg: #fff4dd;
  --color-error: #9c343b;
  --color-error-bg: #fcebed;
  --font-display: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --text-xs: 0.875rem;
  --text-sm: 0.9375rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --container-max: 1200px;
  --container-pad: 1rem;
}

h1, h2, h3 { font-family: var(--font-display); font-weight: 650; letter-spacing: -0.035em; line-height: 1.2; }
h1 { font-size: clamp(1.875rem, 3.2vw, 2.375rem); }
h2 { font-size: clamp(1.375rem, 2.2vw, 1.625rem); }
h3 { font-size: 1.125rem; }
p { line-height: 1.65; }
:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 3px; }
.container { width: 100%; max-width: var(--container-max); margin-inline: auto; padding-inline: var(--container-pad); }
.section__supertitle { margin-bottom: var(--space-xs); color: var(--color-secondary); font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.nav__logo { display: flex; min-width: 0; flex-direction: column; line-height: 1.2; }
.nav__logo-name { overflow-wrap: anywhere; font-family: var(--font-display); font-weight: 750; font-size: var(--text-xl); letter-spacing: -0.03em; }
.nav__logo-tagline { font-size: var(--text-xs); color: var(--color-text-muted); }
.btn { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; gap: var(--space-xs); padding: 0.75rem 1.25rem; border: 1px solid transparent; border-radius: var(--radius-md); font-size: var(--text-sm); font-weight: 650; line-height: 1.2; text-align: center; transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast); }
.btn--primary { color: #fff; background: var(--color-primary); border-color: var(--color-primary); }
.btn--outline { color: var(--color-primary); background: var(--color-surface); border-color: var(--color-border); }
.btn--ghost { color: var(--color-primary); background: transparent; text-decoration: underline; }
.btn--sm { min-height: 40px; padding: 0.55rem 0.9rem; font-size: var(--text-xs); }
.btn--primary:hover:not(:disabled) { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }
.btn--outline:hover:not(:disabled) { background: #eaf0f8; border-color: var(--color-secondary); }
.btn--ghost:hover:not(:disabled) { color: var(--color-primary-hover); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; box-shadow: none; }

@media (min-width: 640px) { :root { --container-pad: 1.5rem; } }
@media (min-width: 1024px) { :root { --container-pad: 4rem; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; } }