:root{
  --sky:#159fd4; --blue:#1d6fa5; --blue-dark:#17547e; --red:#e42320;
  --ink:#182430; --muted:#5c6b79; --line:#e3eaf0;
  --bg:#ffffff; --soft:#f5f8fb;
  --max:960px; --radius:14px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}

/* Header */
header.site{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:1.15rem;letter-spacing:.02em;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand img{width:38px;height:38px;border-radius:8px;box-shadow:0 2px 8px rgba(23,84,126,.25)}
.brand b{color:var(--blue-dark)} .brand b i{color:var(--red);font-style:normal}
nav a{color:var(--muted);font-weight:600;font-size:.95rem;margin-left:22px}
nav a:hover{color:var(--blue);text-decoration:none}

/* Hero */
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#0f4c78 0%,#1d6fa5 55%,#159fd4 100%);color:#fff}
.hero .wrap{position:relative;z-index:2;padding:88px 22px 96px}
.hero .mountains{position:absolute;left:0;right:0;bottom:-1px;z-index:1;display:block;width:100%;height:auto;opacity:.5}
.hero .kicker{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#bfe6f7;margin-bottom:14px}
.hero h1{margin:0 0 16px;font-size:clamp(2rem,5vw,3.1rem);line-height:1.08;font-weight:800;letter-spacing:-.01em}
.hero p{margin:0 0 28px;max-width:640px;font-size:1.15rem;color:#e6f2fa}
.btns{display:flex;flex-wrap:wrap;gap:14px}
.btn{display:inline-block;padding:13px 24px;border-radius:999px;font-weight:700;font-size:.98rem}
.btn-primary{background:var(--red);color:#fff}
.btn-primary:hover{background:#c81d1a;text-decoration:none}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.35)}
.btn-ghost:hover{background:rgba(255,255,255,.2);text-decoration:none}

/* Sections */
section{padding:66px 0}
section.soft{background:var(--soft)}
h2{font-size:1.7rem;font-weight:800;letter-spacing:-.01em;margin:0 0 8px;color:var(--blue-dark)}
.lead{color:var(--muted);margin:0 0 34px;font-size:1.05rem}
.grid{display:grid;gap:22px;grid-template-columns:repeat(3,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(23,84,126,.1)}
.card .ico{width:44px;height:44px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:14px;background:linear-gradient(135deg,var(--sky),var(--blue));color:#fff}
.card h3{margin:0 0 8px;font-size:1.15rem;color:var(--ink)}
.card p{margin:0;color:var(--muted);font-size:.97rem}
.card em{color:var(--blue);font-style:normal;font-weight:600}

/* Réalisations */
.works{display:grid;gap:22px;grid-template-columns:repeat(3,1fr)}
.work{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden;transition:transform .15s,box-shadow .15s}
a.work:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(23,84,126,.14);text-decoration:none}
.work .thumb{aspect-ratio:16/10;background:#0f2233 center/cover no-repeat;border-bottom:1px solid var(--line)}
.work .body{padding:20px 22px}
.work span{display:inline-block;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--red);margin-bottom:8px}
.work h3{margin:0 0 6px;font-size:1.15rem;color:var(--ink)}
.work p{margin:0 0 12px;color:var(--muted);font-size:.95rem}
.work .more{font-weight:700;font-size:.9rem;color:var(--blue)}

/* Teaser livre */
.book{background:#0e1c2a;color:#eaf1f7;overflow:hidden}
.book .wrap{display:grid;grid-template-columns:280px 1fr;gap:44px;align-items:center;padding:64px 22px}
.book .cover{width:280px;border-radius:8px;box-shadow:0 20px 50px rgba(0,0,0,.5);justify-self:center}
.book .kicker{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--red);background:rgba(228,35,32,.14);padding:5px 12px;border-radius:999px;margin-bottom:16px}
.book h2{color:#fff;font-size:2rem;margin:0 0 6px}
.book .ioa{color:#9fb6c8;font-style:italic;margin:0 0 18px}
.book .quote{font-size:1.15rem;line-height:1.5;color:#dbe7f0;border-left:3px solid var(--red);padding-left:18px;margin:0 0 22px}
.book .by{color:#9fb6c8;font-size:.95rem;margin:0 0 24px}
.book .btns .btn-ghost{border-color:rgba(255,255,255,.4)}

/* Dedicated page sub-hero */
.subhero{color:#fff;padding:76px 0 64px;position:relative}
.subhero.blue{background:linear-gradient(135deg,#0f4c78,#1d6fa5)}
.subhero .wrap{position:relative;z-index:2}
.subhero .kicker{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#bfe6f7;margin-bottom:12px}
.subhero h1{font-size:clamp(1.9rem,4.5vw,2.8rem);margin:0 0 14px;font-weight:800;letter-spacing:-.01em}
.subhero p{max-width:640px;font-size:1.12rem;color:#e6f2fa;margin:0 0 24px}
.article{max-width:820px;margin:0 auto;padding:56px 22px 72px}
.article h2{font-size:1.5rem;color:var(--blue-dark);margin:36px 0 12px}
.article p,.article li{color:#33424f;font-size:1.03rem}
.article .shot{width:100%;border-radius:12px;border:1px solid var(--line);box-shadow:0 12px 30px rgba(23,84,126,.12);margin:26px 0}
.feature{display:grid;gap:16px;grid-template-columns:repeat(2,1fr);margin:22px 0}
.feature div{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:18px 20px}
.feature h3{margin:0 0 6px;font-size:1.02rem;color:var(--blue-dark)}
.feature p{margin:0;font-size:.95rem;color:var(--muted)}
@media(max-width:760px){.book .wrap{grid-template-columns:1fr;text-align:center}.book .quote{text-align:left}.feature{grid-template-columns:1fr}}

/* Contact */
.contact{text-align:center}
.contact a.mail{font-size:1.3rem;font-weight:800;color:var(--blue-dark)}

/* Footer */
footer.site{background:#122736;color:#aebdc9;padding:40px 0;font-size:.9rem}
footer.site .wrap{display:flex;flex-wrap:wrap;gap:14px 26px;align-items:center;justify-content:space-between}
footer.site a{color:#cfe0ec;font-weight:600}
footer.site .legal a{margin-left:18px}

/* Legal pages */
.legal-page{max-width:760px;margin:0 auto;padding:56px 22px 80px}
.legal-page .back{display:inline-block;margin-bottom:26px;font-weight:600;font-size:.9rem}
.legal-page h1{font-size:2rem;color:var(--blue-dark);margin:0 0 6px}
.legal-page .updated{color:var(--muted);font-size:.9rem;margin:0 0 34px}
.legal-page h2{font-size:1.2rem;margin:34px 0 10px;color:var(--ink)}
.legal-page p,.legal-page li{color:#33424f}
.legal-page ul{padding-left:22px}
.legal-page code{background:var(--soft);padding:2px 6px;border-radius:5px;font-size:.9em}

@media(max-width:760px){
  .grid,.works{grid-template-columns:1fr}
  nav a:first-child{margin-left:0}
  header.site nav{display:none}
  .hero .wrap{padding:64px 22px 72px}
}