/* ================= Blog Stevens Studio : même système que l'accueil (noir et blanc) ================= */
:root{
  --font: 'Inter Tight', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --serif: 'Instrument Serif', Georgia, serif;
  --pad: clamp(20px, 4vw, 56px);
  --muted: rgba(255,255,255,0.58);
  --line: rgba(255,255,255,0.16);
  --ease: cubic-bezier(.2,.85,.2,1);
}
*, *::before, *::after{ box-sizing: border-box; margin: 0; padding: 0; }
html{ background: #000; color-scheme: dark; }
body{ font-family: var(--font); background: #000; color: #fff; line-height: 1.7; -webkit-font-smoothing: antialiased; }
a{ color: inherit; }
img{ max-width: 100%; display: block; }
em{ font-family: var(--serif); font-weight: 400; font-style: italic; }

/* barre du haut */
.top{ max-width: 1200px; margin: 0 auto; padding: 24px var(--pad); display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.logo{ display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 600; font-size: 17px; letter-spacing: -0.02em; }
.logo svg{ height: 30px; width: auto; fill: currentColor; }
.top nav{ display: flex; gap: 22px; font-size: 14px; font-weight: 500; }
.top nav a{ text-decoration: none; color: var(--muted); transition: color .3s ease; }
.top nav a:hover, .top nav a[aria-current]{ color: #fff; }
.top .cta-link{ color: #fff; border-bottom: 1px solid currentColor; padding-bottom: 2px; }
@media (max-width: 559px){ .top nav .hide-sm{ display: none; } }

.wrap{ max-width: 1200px; margin: 0 auto; padding: 0 var(--pad) 80px; }
.narrow{ max-width: 760px; margin: 0 auto; }

.crumbs{ font-size: 13px; color: var(--muted); margin-top: clamp(24px, 4vw, 48px); }
.crumbs a{ text-decoration: none; }
.crumbs a:hover{ color: #fff; }
.crumbs span{ margin: 0 6px; }

.kicker{ display: inline-block; font-size: 12px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }

/* ===== Page liste ===== */
.blog-head{ padding: clamp(40px, 7vw, 96px) 0 clamp(32px, 5vw, 56px); border-bottom: 1px solid var(--line); }
.blog-head h1{ margin-top: 14px; font-size: clamp(48px, 9vw, 120px); font-weight: 600; line-height: .92; letter-spacing: -.045em; }
.blog-head p{ margin-top: 24px; max-width: 620px; font-size: clamp(16px, 1.6vw, 19px); color: var(--muted); }

.posts{ list-style: none; }
.post{ border-bottom: 1px solid var(--line); }
.post a{
  display: grid; grid-template-columns: 120px minmax(0, 1fr) 56px; gap: 24px; align-items: center;
  padding: clamp(26px, 3.4vw, 40px) 0; text-decoration: none;
}
.post-meta{ font-size: 13px; color: var(--muted); }
.post h2{ font-size: clamp(24px, 3vw, 40px); font-weight: 600; line-height: 1.08; letter-spacing: -.035em; transition: transform .6s var(--ease); }
.post p{ margin-top: 10px; color: var(--muted); font-size: 15px; max-width: 640px; }
.post-arrow{ width: 52px; height: 52px; border-radius: 50%; border: 1px solid var(--line); display: grid; place-items: center; transition: transform .6s var(--ease), border-color .3s ease; }
.post a:hover h2{ transform: translateX(10px); }
.post a:hover .post-arrow{ transform: rotate(-45deg); border-color: #fff; }
@media (max-width: 699px){
  .post a{ grid-template-columns: 1fr auto; gap: 12px 16px; }
  .post-meta{ grid-column: 1 / -1; }
  .post-arrow{ width: 44px; height: 44px; }
}

/* ===== Article ===== */
.article-head{ padding: clamp(28px, 5vw, 64px) 0 clamp(28px, 4vw, 44px); }
.article-head h1{ margin-top: 16px; font-size: clamp(36px, 6vw, 72px); font-weight: 600; line-height: 1; letter-spacing: -.04em; }
.article-head .lede{ margin-top: 24px; font-size: clamp(17px, 1.8vw, 21px); line-height: 1.55; color: rgba(255,255,255,.78); }
.byline{ display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted); }
.byline strong{ color: #fff; font-weight: 500; }

.prose{ font-size: 17px; }
.prose h2{ margin: 56px 0 16px; font-size: clamp(26px, 3.2vw, 36px); font-weight: 600; line-height: 1.12; letter-spacing: -.03em; }
.prose h3{ margin: 32px 0 10px; font-size: 20px; font-weight: 600; letter-spacing: -.02em; }
.prose p{ margin-top: 16px; color: rgba(255,255,255,.86); }
.prose ul, .prose ol{ margin-top: 16px; padding-left: 22px; color: rgba(255,255,255,.86); }
.prose li + li{ margin-top: 8px; }
.prose strong{ color: #fff; font-weight: 600; }
.prose a{ text-decoration: underline; text-underline-offset: 3px; text-decoration-color: rgba(255,255,255,.4); }
.prose a:hover{ text-decoration-color: #fff; }
.summary{ margin-top: 8px; padding: 22px 24px; border: 1px solid var(--line); border-radius: 16px; }
.summary .kicker{ margin-bottom: 6px; }
.summary ol{ margin-top: 8px; }
.summary a{ text-decoration: none; }
.note{ margin-top: 24px; padding: 20px 22px; border-left: 2px solid #fff; background: rgba(255,255,255,.05); border-radius: 0 12px 12px 0; }
.note p:first-child{ margin-top: 0; }

/* encadré contact en fin d'article */
.cta-box{ margin-top: 64px; padding: clamp(28px, 4vw, 44px); border-radius: 22px; background: #fff; color: #000; }
.cta-box h2{ margin: 0; font-size: clamp(28px, 4vw, 44px); font-weight: 600; line-height: 1.02; letter-spacing: -.04em; }
.cta-box p{ margin-top: 14px; color: rgba(0,0,0,.7); }
.cta-actions{ display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.btn{ display: inline-flex; align-items: center; gap: 10px; padding: 14px 22px; border-radius: 999px; font-size: 15px; font-weight: 500; text-decoration: none; transition: transform .4s var(--ease); }
.btn:hover{ transform: translateY(-2px); }
.btn-dark{ background: #000; color: #fff; }
.btn-line{ border: 1px solid #000; }

.author{ display: flex; gap: 18px; align-items: center; margin-top: 48px; padding-top: 28px; border-top: 1px solid var(--line); }
.author img{ width: 64px; height: 64px; border-radius: 50%; object-fit: cover; }
.author p{ font-size: 14px; color: var(--muted); }
.author strong{ display: block; color: #fff; font-size: 16px; font-weight: 600; }

.related{ margin-top: 56px; }
.related h2{ font-size: 13px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.related a{ display: block; padding: 16px 0; border-bottom: 1px solid var(--line); text-decoration: none; font-size: 18px; font-weight: 500; letter-spacing: -.01em; }
.related a:hover{ color: var(--muted); }

.foot{ max-width: 1200px; margin: 0 auto; padding: 28px var(--pad) 48px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; font-size: 13px; color: var(--muted); }
.foot nav{ display: flex; flex-wrap: wrap; gap: 8px 20px; }
.foot a{ text-decoration: none; }
.foot a:hover{ color: #fff; }

/* questions fréquentes des pages de services */
.faq{ margin-top: 12px; border-top: 1px solid var(--line); }
.faq details{ border-bottom: 1px solid var(--line); }
.faq summary{ cursor: pointer; list-style: none; padding: 18px 32px 18px 0; position: relative; font-weight: 600; color: #fff; }
.faq summary::-webkit-details-marker{ display: none; }
.faq summary::after{ content: "+"; position: absolute; right: 4px; top: 14px; font-size: 22px; font-weight: 400; transition: transform .4s var(--ease); }
.faq details[open] summary::after{ transform: rotate(45deg); }
.faq details p{ margin: 0 0 18px; }