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

:root {
  --bg-page: #f6f7f8;
  --bg-elevated: #ffffff;
  --bg-muted: #eef1f4;
  --accent: #1f7aa8;
  --accent-soft: #e0edf4;
  --accent-dark: #145270;
  --text-main: #1f2933;
  --text-soft: #6b7280;
  --border-subtle: #d1d5db;
  --shadow-soft: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius-small: 4px;
  --radius-medium: 8px;
  --radius-large: 18px;
  --header-height: 60px;
  --transition-fast: 150ms ease-out;
}

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text-main);
  background: radial-gradient(circle at top left, #dde7f0 0, #f6f7f8 45%, #ffffff 100%);
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(246, 247, 248, 0.92);
  border-bottom: 1px solid rgba(209, 213, 219, 0.7);
}

.site-header.is-scrolled {
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}

.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: inherit;
  text-decoration: none;
}

.logo-mark {
  width: 30px;
  height: 30px;
  border-radius: 40% 60% 45% 55%;
  background: linear-gradient(135deg, var(--accent-dark), var(--accent));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}

.logo-text {
  font-weight: 600;
  letter-spacing: 0.02em;
  font-size: 0.98rem;
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 40px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.9);
  padding: 0 10px;
  cursor: pointer;
}

.nav-toggle-bar {
  height: 2px;
  width: 100%;
  border-radius: 999px;
  background: #111827;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-nav {
  position: absolute;
  inset-inline: 0;
  top: 100%;
  background: rgba(246, 247, 248, 0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(209, 213, 219, 0.7);
  transform-origin: top;
  transform: scaleY(0.9);
  opacity: 0;
  pointer-events: none;
  transition: opacity 140ms ease-out, transform 140ms ease-out;
}

.site-nav.open {
  opacity: 1;
  transform: scaleY(1);
  pointer-events: auto;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0.5rem 1rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.site-nav a {
  display: block;
  padding: 0.45rem 0.25rem;
  font-size: 0.95rem;
  color: #111827;
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--accent-dark);
}

main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1rem 1rem 3rem;
}

.section {
  margin-top: 2.5rem;
}

.section-heading {
  max-width: 620px;
}

.section-heading h2 {
  margin: 0 0 0.4rem;
  font-size: 1.35rem;
}

.section-heading p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.98rem;
}

.hero {
  margin-top: 1.25rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr);
  gap: 1.75rem;
  align-items: stretch;
}

.hero-content {
  background: radial-gradient(circle at top left, var(--accent-soft), #ffffff 50%, #f9fafb);
  border-radius: 0 22px 22px 22px;
  padding: 1.3rem 1.2rem 1.3rem;
  box-shadow: var(--shadow-soft);
  border-inline-start: 4px solid var(--accent);
}

.hero-panel {
  border-radius: 18px 0 18px 18px;
  border: 1px solid var(--border-subtle);
  background: linear-gradient(135deg, #ffffff, #edf2f7);
  padding: 1.1rem 1rem 1.2rem;
}

.hero-kicker {
  margin: 0 0 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-size: 0.7rem;
  color: var(--accent-dark);
}

.hero h1 {
  margin: 0 0 0.65rem;
  font-size: 1.5rem;
  line-height: 1.3;
}

.hero-text {
  margin: 0 0 1rem;
  color: var(--text-soft);
  font-size: 0.98rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 10px 22px rgba(31, 122, 168, 0.4);
}

.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 14px 26px rgba(20, 82, 112, 0.45);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.7);
  border-color: rgba(148, 163, 184, 0.7);
  color: var(--text-main);
}

.btn-ghost:hover {
  background: #ffffff;
}

.hero-facts {
  margin: 0;
  padding: 0.75rem;
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.03);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.6rem;
  font-size: 0.8rem;
}

.hero-facts div {
  border-right: 1px solid rgba(209, 213, 219, 0.8);
  padding-right: 0.35rem;
}

.hero-facts div:last-child {
  border-right: none;
}

.hero-facts dt {
  font-weight: 600;
  color: #4b5563;
}

.hero-facts dd {
  margin: 0.15rem 0 0;
  color: var(--text-soft);
}

.hero-panel-title {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.hero-list {
  margin: 0 0 1rem;
  padding-left: 1.1rem;
  color: var(--text-soft);
  font-size: 0.93rem;
}

.hero-list li + li {
  margin-top: 0.25rem;
}

.hero-contact-inline {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.4rem;
  padding-top: 0.7rem;
  border-top: 1px dashed rgba(148, 163, 184, 0.8);
}

.hero-contact-label {
  font-size: 0.85rem;
  color: var(--text-soft);
}

.hero-phone {
  font-weight: 600;
  font-size: 0.96rem;
}

.section-services {
  background: linear-gradient(135deg, rgba(31, 122, 168, 0.06), rgba(15, 23, 42, 0.02));
  border-radius: 20px;
  padding: 1.5rem 1.2rem 1.7rem;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

.services-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-top: 1.3rem;
}

.service-block {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 14px;
  padding: 0.9rem 0.85rem;
  border-inline-start: 3px solid rgba(31, 122, 168, 0.35);
}

.service-block h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}

.service-block ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.service-block li + li {
  margin-top: 0.18rem;
}

.services-note {
  margin: 1.2rem 0 0;
  font-size: 0.9rem;
  color: var(--text-soft);
}

.section-realisations {
  margin-top: 2.8rem;
}

.realisations-grid {
  margin-top: 1.4rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.2rem;
}

.real-item {
  background: var(--bg-elevated);
  border-radius: 16px;
  border: 1px solid rgba(209, 213, 219, 0.9);
  overflow: hidden;
}

.real-image-frame {
  position: relative;
  overflow: hidden;
}

.real-image-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom right, rgba(15, 23, 42, 0.05), transparent 35%, transparent 70%, rgba(15, 23, 42, 0.08));
  mix-blend-mode: multiply;
  pointer-events: none;
}

.real-item img {
  width: 100%;
  height: 210px;
  object-fit: cover;
}

.real-item figcaption {
  padding: 0.8rem 0.9rem 0.9rem;
}

.real-item h3 {
  margin: 0 0 0.3rem;
  font-size: 1rem;
}

.real-item p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.93rem;
}

.real-item-large img {
  height: 230px;
}

.section-methodes {
  border-radius: 18px;
  padding: 1.5rem 1.2rem 1.6rem;
  border: 1px solid rgba(209, 213, 219, 0.9);
  background: linear-gradient(145deg, #ffffff, #f3f4f6);
}

.steps-list {
  margin: 1.2rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.8rem;
}

.steps-list li {
  padding-left: 0.1rem;
}

.steps-list h3 {
  margin: 0 0 0.25rem;
  font-size: 0.98rem;
}

.steps-list p {
  margin: 0;
  font-size: 0.93rem;
  color: var(--text-soft);
}

.section-temoignages {
  margin-top: 2.5rem;
}

.temoignages-grid {
  margin-top: 1.3rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.9rem;
}

.temoignage {
  background: #ffffff;
  border-radius: 14px;
  padding: 0.85rem 0.9rem;
  border: 1px solid rgba(209, 213, 219, 0.9);
}

.temoignage-text {
  margin: 0 0 0.5rem;
  font-size: 0.93rem;
  color: var(--text-soft);
}

.temoignage-author {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 500;
}

.section-faq {
  margin-top: 2.4rem;
}

.faq-list {
  margin-top: 1.2rem;
  border-radius: 16px;
  border: 1px solid rgba(209, 213, 219, 0.9);
  background: #ffffff;
}

.faq-item + .faq-item {
  border-top: 1px solid rgba(229, 231, 235, 0.9);
}

.faq-question {
  width: 100%;
  padding: 0.75rem 0.9rem;
  text-align: left;
  background: transparent;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
  cursor: pointer;
  font-size: 0.95rem;
}

.faq-question:hover {
  background: rgba(249, 250, 251, 0.7);
}

.faq-icon {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.9);
  position: relative;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: rgba(55, 65, 81, 0.95);
  border-radius: 999px;
}

.faq-icon::before {
  width: 8px;
  height: 1.3px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.faq-icon::after {
  width: 1.3px;
  height: 8px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.faq-item.open .faq-icon::after {
  opacity: 0;
}

.faq-answer {
  padding: 0 0.9rem 0.8rem;
}

.faq-answer p {
  margin: 0;
  font-size: 0.93rem;
  color: var(--text-soft);
}

.section-apropos {
  margin-top: 2.6rem;
}

.apropos-inner {
  border-radius: 18px;
  border: 1px solid rgba(209, 213, 219, 0.9);
  background: #ffffff;
  padding: 1.35rem 1.1rem 1.5rem;
}

.apropos-content {
  margin-top: 0.9rem;
  display: grid;
  gap: 0.6rem;
  font-size: 0.95rem;
  color: var(--text-soft);
}

.section-contact {
  margin-top: 2.6rem;
}

.contact-layout {
  margin-top: 1.4rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.4rem;
}

.contact-details {
  font-size: 0.95rem;
  color: var(--text-soft);
}

.contact-details h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  color: var(--text-main);
}

.contact-hint {
  margin-top: 0.7rem;
  font-size: 0.9rem;
}

.contact-form {
  background: #ffffff;
  border-radius: 16px;
  padding: 1rem 0.9rem 1.1rem;
  border: 1px solid rgba(209, 213, 219, 0.9);
}

.form-row {
  display: grid;
  gap: 0.25rem;
  margin-bottom: 0.75rem;
}

label {
  font-size: 0.9rem;
  color: #374151;
}

input,
select,
textarea {
  border-radius: 8px;
  border: 1px solid rgba(209, 213, 219, 0.95);
  padding: 0.45rem 0.55rem;
  background: #f9fafb;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: transparent;
}

textarea {
  resize: vertical;
  min-height: 120px;
}

.form-note {
  margin: 0 0 0.6rem;
  font-size: 0.82rem;
  color: var(--text-soft);
}

.site-footer {
  border-top: 1px solid rgba(209, 213, 219, 0.9);
  background: #f9fafb;
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0.9rem 1rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
  color: var(--text-soft);
}

.footer-top {
  align-self: flex-start;
}

@media (min-width: 700px) {
  :root {
    --header-height: 68px;
  }

  .header-inner {
    padding: 0.6rem 1.25rem;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1.35fr);
  }

  .hero-content {
    padding: 1.5rem 1.4rem 1.6rem;
  }

  .hero-panel {
    padding: 1.3rem 1.15rem 1.3rem;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .section-services {
    padding: 1.8rem 1.5rem 1.9rem;
  }

  .services-layout {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .realisations-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.1fr);
    grid-auto-rows: 1fr;
  }

  .real-item-large {
    grid-column: 1 / -1;
  }

  .steps-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .temoignages-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .apropos-content {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-layout {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.4fr);
    align-items: start;
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

@media (min-width: 880px) {
  .nav-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    transform: none !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    background: transparent;
    border-bottom: none;
  }

  .site-nav ul {
    flex-direction: row;
    padding: 0;
    gap: 0.9rem;
  }

  .site-nav a {
    padding: 0.2rem 0;
    font-size: 0.92rem;
    position: relative;
  }

  .site-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -0.15rem;
    width: 0;
    height: 2px;
    border-radius: 999px;
    background: var(--accent);
    transition: width var(--transition-fast);
  }

  .site-nav a:hover::after {
    width: 100%;
  }
}