*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --dx-bg: #f9fafb;
  --dx-dark: #111827;
  --dx-mid: #374151;
  --dx-amber: #f59e0b;
  --dx-amber2: #fbbf24;
  --dx-muted: #6b7280;
  --dx-border: #e5e7eb;
  --dx-white: #ffffff;
}
body { font-family: 'Open Sans', sans-serif; background: var(--dx-bg); color: var(--dx-dark); line-height: 1.7; }
.dx-wrap { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
h1,h2,h3 { font-family: 'Oswald', sans-serif; text-transform: uppercase; }
strong { color: var(--dx-amber); }
a { color: var(--dx-amber); text-decoration: none; }
img { max-width: 100%; height: auto; border-radius: 6px; display: block; }

/* Header */
.dx-header { background: var(--dx-dark); position: sticky; top: 0; z-index: 100; border-bottom: 3px solid var(--dx-amber); }
.dx-header__row { display: flex; align-items: center; justify-content: space-between; padding: 16px 24px; }
.dx-header__logo { font-family: 'Oswald', sans-serif; font-size: 1.5rem; font-weight: 700; color: #fff; text-transform: uppercase; letter-spacing: .06em; }
.dx-header__logo span { color: var(--dx-amber); }
.dx-header__nav { display: flex; gap: 32px; }
.dx-header__nav a { font-size: .85rem; font-weight: 700; color: rgba(255,255,255,.7); text-transform: uppercase; letter-spacing: .08em; transition: color .2s; }
.dx-header__nav a:hover { color: var(--dx-amber); }

/* Badge */
.dx-badge { display: inline-block; background: var(--dx-amber); color: var(--dx-dark); font-size: .72rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; padding: 4px 14px; border-radius: 3px; margin-bottom: 20px; }
.dx-badge--center { display: block; text-align: center; width: fit-content; margin: 0 auto 20px; }

/* Buttons */
.dx-btn { display: inline-block; padding: 14px 36px; background: var(--dx-amber); color: var(--dx-dark); border-radius: 4px; font-family: 'Oswald', sans-serif; font-size: 1rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; transition: all .2s; cursor: pointer; border: none; }
.dx-btn:hover { background: var(--dx-amber2); }
.dx-btn--border { background: transparent; border: 2px solid rgba(255,255,255,.5); color: #fff; }
.dx-btn--border:hover { border-color: var(--dx-amber); color: var(--dx-amber); }

/* Hero */
.dx-hero { background: var(--dx-dark); color: #fff; padding: 80px 0; }
.dx-hero__grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: center; }
.dx-hero__text h1 { font-size: clamp(2.2rem, 4.5vw, 3.8rem); line-height: 1.1; margin-bottom: 20px; color: #fff; }
.dx-hero__text p { color: rgba(255,255,255,.7); font-size: 1rem; margin-bottom: 36px; font-family: 'Open Sans', sans-serif; }
.dx-hero__btns { display: flex; gap: 16px; flex-wrap: wrap; }
.dx-hero__img img { aspect-ratio: 1; object-fit: cover; }

/* Prestations */
.dx-prestations { padding: 80px 0; }
.dx-title { font-size: clamp(1.8rem, 3vw, 2.8rem); text-align: center; margin-bottom: 56px; }
.dx-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.dx-prest { background: var(--dx-white); border: 1px solid var(--dx-border); border-radius: 6px; padding: 32px 24px; position: relative; border-top: 4px solid transparent; }
.dx-prest--hl { border-top-color: var(--dx-amber); }
.dx-prest__top { position: absolute; top: -12px; left: 24px; background: var(--dx-amber); color: var(--dx-dark); font-size: .68rem; font-weight: 800; padding: 3px 12px; text-transform: uppercase; letter-spacing: .08em; }
.dx-prest__price { font-family: 'Oswald', sans-serif; font-size: 1.5rem; font-weight: 700; color: var(--dx-amber); margin-bottom: 12px; }
.dx-prest h3 { font-size: 1.1rem; margin-bottom: 10px; }
.dx-prest p { font-size: .88rem; color: var(--dx-muted); margin-bottom: 16px; }
.dx-prest ul { list-style: none; font-size: .85rem; color: var(--dx-muted); }
.dx-prest ul li { padding: 7px 0; border-bottom: 1px solid var(--dx-border); }
.dx-prest ul li::before { content: '✔ '; color: var(--dx-amber); }

/* Equipe */
.dx-equipe { padding: 80px 0; background: var(--dx-dark); color: #fff; }
.dx-equipe__grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: center; }
.dx-equipe__photo img { aspect-ratio: 4/5; object-fit: cover; }
.dx-equipe__text h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); margin-bottom: 20px; color: #fff; }
.dx-equipe__text p { color: rgba(255,255,255,.7); margin-bottom: 24px; }
.dx-equipe__list { list-style: none; }
.dx-equipe__list li { padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.75); font-size: .92rem; }

/* Devis */
.dx-devis { padding: 80px 0; }
.dx-form { max-width: 640px; margin: 0 auto; display: flex; flex-direction: column; gap: 20px; }
.dx-form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.dx-form__field { display: flex; flex-direction: column; gap: 6px; font-size: .82rem; font-weight: 700; color: var(--dx-mid); text-transform: uppercase; letter-spacing: .06em; }
.dx-form__field input, .dx-form__field select, .dx-form__field textarea { padding: 12px 16px; border: 2px solid var(--dx-border); border-radius: 4px; font-size: .95rem; font-family: 'Open Sans', sans-serif; background: var(--dx-white); outline: none; transition: border-color .2s; }
.dx-form__field input:focus, .dx-form__field select:focus, .dx-form__field textarea:focus { border-color: var(--dx-amber); }
.dx-form__check { display: flex; align-items: flex-start; gap: 10px; font-size: .85rem; color: var(--dx-muted); text-transform: none; letter-spacing: 0; font-weight: 400; }
.dx-form__check input { margin-top: 3px; accent-color: var(--dx-amber); }

/* Footer */
.dx-footer { background: #0a0f1a; color: rgba(255,255,255,.6); padding: 60px 0 0; }
.dx-footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.dx-footer__logo { font-family: 'Oswald', sans-serif; font-size: 1.4rem; font-weight: 700; color: #fff; text-transform: uppercase; margin-bottom: 10px; }
.dx-footer__logo span { color: var(--dx-amber); }
.dx-footer h4 { color: #fff; font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 14px; }
.dx-footer ul { list-style: none; font-size: .87rem; }
.dx-footer ul li { margin-bottom: 8px; }
.dx-footer a { color: rgba(255,255,255,.45); transition: color .2s; }
.dx-footer a:hover { color: var(--dx-amber); }
.dx-footer__bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 20px 0; text-align: center; font-size: .78rem; color: rgba(255,255,255,.25); }

/* Legal */
.dx-legal { padding: 80px 0; }
.dx-legal__inner { max-width: 780px; margin: 0 auto; }
.dx-legal h1 { font-size: 2.2rem; margin-bottom: 8px; }
.dx-legal__date { color: var(--dx-muted); font-size: .9rem; margin-bottom: 40px; }
.dx-legal h2 { font-size: 1.1rem; margin: 32px 0 10px; color: var(--dx-amber); }
.dx-legal p, .dx-legal ul { color: var(--dx-muted); margin-bottom: 16px; font-family: 'Open Sans', sans-serif; }
.dx-legal ul { padding-left: 20px; }
.dx-legal__back { display: inline-block; margin-top: 40px; font-weight: 700; }

@media (max-width: 768px) {
  .dx-hero__grid, .dx-equipe__grid { grid-template-columns: 1fr; }
  .dx-grid { grid-template-columns: 1fr; }
  .dx-footer__grid { grid-template-columns: 1fr 1fr; }
  .dx-form__row { grid-template-columns: 1fr; }
  .dx-header__nav { display: none; }
}