:root {
  --color-primary: #0d7a5f;
  --color-primary-dark: #065a46;
  --color-accent: #e8f5f0;
  --color-text: #1a1a1a;
  --color-muted: #6b7280;
  --color-bg: #fafafa;
  --color-white: #ffffff;
  --color-border: #e5e7eb;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --max-width: 1120px;
  --header-height: 72px;
  --radius: 12px;
  --shadow: 0 12px 40px rgba(13, 122, 95, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.6;
}

img {
  max-width: 100%;
  height: auto;
}

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

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

.section {
  padding: 5rem 0;
}

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

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.15;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.section-title em {
  font-style: italic;
  color: var(--color-primary);
}

.section-lead {
  color: var(--color-muted);
  font-size: 1.05rem;
  max-width: 42rem;
  margin: 0 0 2.5rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.site-header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.logo img {
  height: 36px;
  width: auto;
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 1.5rem;
}

.nav-desktop a {
  font-size: 0.95rem;
  color: var(--color-muted);
}

.nav-desktop a:hover {
  color: var(--color-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-toggle {
  display: inline-flex;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
}

.nav-mobile {
  display: none;
  position: fixed;
  inset: var(--header-height) 0 0 0;
  background: var(--color-white);
  padding: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.nav-mobile.open {
  display: block;
}

.nav-mobile a {
  display: block;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 900px) {
  .nav-desktop {
    display: flex;
  }

  .nav-toggle {
    display: none;
  }
}

.site-footer {
  background: #0f172a;
  color: #cbd5e1;
  padding: 4rem 0 2rem;
}

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

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand p {
  margin: 1rem 0 0;
  max-width: 28rem;
  color: #94a3b8;
}

.footer-col h4 {
  color: var(--color-white);
  margin: 0 0 1rem;
  font-size: 0.9rem;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col li {
  margin-bottom: 0.5rem;
}

.footer-col a:hover {
  color: var(--color-white);
}

.footer-bottom {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.85rem;
  color: #94a3b8;
}

.hero {
  padding: 4rem 0 5rem;
  background: linear-gradient(180deg, var(--color-accent) 0%, var(--color-white) 70%);
}

.hero-grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.08;
  margin: 0 0 1.25rem;
  letter-spacing: -0.03em;
}

.hero h1 em {
  font-style: italic;
  color: var(--color-primary);
}

.hero-lead {
  font-size: 1.125rem;
  color: var(--color-muted);
  margin: 0 0 2rem;
  max-width: 34rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  padding: 1rem;
}

.feature-grid {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 700px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1000px) {
  .feature-grid.three {
    grid-template-columns: repeat(3, 1fr);
  }
}

.steps {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 800px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  background: var(--color-accent);
  color: var(--color-primary-dark);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-size: 0.875rem;
}

.cta-band {
  text-align: center;
  padding: 4rem 0;
  background: var(--color-primary);
  color: var(--color-white);
}

.cta-band h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.cta-band p {
  margin: 0 auto 2rem;
  max-width: 36rem;
  opacity: 0.92;
}

.cta-band .hero-actions {
  justify-content: center;
}

.page-header {
  padding: 3rem 0 2rem;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
}

.page-header p {
  margin: 0;
  color: var(--color-muted);
}

.form-page {
  padding: 3rem 0 5rem;
}

.form-layout {
  display: grid;
  gap: 2rem;
}

@media (min-width: 900px) {
  .form-layout {
    grid-template-columns: 1fr 1.2fr;
  }
}

.contact-info {
  background: var(--color-accent);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.contact-info h2 {
  margin-top: 0;
  font-size: 1.1rem;
}

.contact-info p {
  margin: 0.35rem 0;
}

.merci-box {
  text-align: center;
  padding: 4rem 0;
}

.merci-box h1 {
  margin-bottom: 1rem;
}

.hidden {
  display: none !important;
}