:root {
  --color-bg: #f9f9f9;
  --color-surface: #ffffff;
  --color-surface-muted: #f3f3f3;
  --color-text: #1a1c1c;
  --color-text-muted: #5f5e5e;
  --color-line: #e2e2e2;
  --color-line-strong: #cfcfcf;
  --color-primary: #c61c23;
  --color-primary-dark: #9f0012;
  --container-max: 1280px;
  --section-space: 5rem;
  --shadow-soft: 0 10px 24px rgba(26, 28, 28, 0.04);
  --transition-fast: 180ms ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1;
}

img {
  display: block;
  width: 100%;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.site-container {
  width: min(100% - 2rem, var(--container-max));
  margin: 0 auto;
}

.section-block {
  padding-block: var(--section-space);
}

.section-block--muted {
  background: var(--color-surface-muted);
}

.section-label {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--color-primary);
  font-family: "Work Sans", sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-label--inverse {
  color: #fff;
  background: var(--color-primary);
  padding: 0.45rem 0.6rem;
  margin-bottom: 1.25rem;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
}

.section-head h2,
.home-hero__lead h1,
.hero-slide__content h2,
.cta-panel h2 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.section-head p,
.home-hero__lead p,
.hero-slide__content p,
.application-card p,
.feature-box p,
.capability-intro p,
.cta-panel p,
.site-footer p,
.footer-bottom p {
  color: var(--color-text-muted);
  line-height: 1.75;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.5rem 1rem;
  border: 1px solid transparent;
  border-radius: 0.25rem;
  font-weight: 600;
  transition: transform var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: var(--color-primary);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-primary-dark);
}

.btn-secondary {
  border-color: var(--color-text);
  color: var(--color-text);
  background: transparent;
}

.btn-secondary--inverse {
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
  background: rgba(255, 255, 255, 0.02);
}

.btn-secondary--inverse:hover,
.btn-secondary--inverse:focus-visible {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  flex-shrink: 0;
}

.brand__mark {
  display: block;
  width: auto;
  height: 3rem;
  flex: 0 0 auto;
}

.brand__text strong,
.brand__text small {
  display: block;
}

.brand__text strong {
  font-size: 1rem;
}

.brand__text small {
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.site-footer {
  padding-top: 4rem;
  background: #111313;
  color: #ededed;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 2rem;
}

.footer-grid h3 {
  margin: 0 0 1rem;
  font-size: 1rem;
}

.footer-grid ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.footer-grid a,
.footer-grid li,
.footer-grid p,
.brand--footer .brand__text small {
  color: rgba(237, 237, 237, 0.74);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 0;
  margin-top: 2.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.92rem;
}

.line-btn {
  --btn-bgcolor: #00B900;
  background-color: var(--btn-bgcolor);
  display: inline-block;
  text-align: center;
  color: #ffffff;
  font-size: 16px;
  transition: all 0.3s;
  --lineicon-size: 48px;
  position: fixed;
  bottom: 10px;
  right: 10px;
  padding: calc(var(--lineicon-size) / 4);
  border-radius: 50%;
  box-shadow: 5px 5px 10px rgba(0, 0, 0, 0.3);

  & svg {
    width: var(--lineicon-size);
    aspect-ratio: 1/1;
  }
}

@media (max-width: 960px) {

  .footer-grid,
  .footer-bottom,
  .section-head {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: start;
  }
}

@media (max-width: 720px) {
  :root {
    --section-space: 4rem;
  }

  .site-container {
    width: min(100% - 2rem, var(--container-max));
  }

}