/* Site de présentation (ecransmultiples.com / multiplescreens.net) */
:root{--bg:#f6f7fb;--panel:#fff;--text:#161a23;--muted:#5f6776;--line:#e3e6ee;--accent:#3d5afe;--accent2:#7b8cff;--dark:#0e1116;--ok:#2f9e5b;--radius:16px}
@media (prefers-color-scheme:dark){:root{--bg:#0f1116;--panel:#171a21;--text:#e9ebf0;--muted:#9aa2b1;--line:#262a33;--accent:#6f82ff;--accent2:#9aa7ff}}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.55 'Inter','Segoe UI',system-ui,sans-serif}
a{color:var(--accent)}
img{max-width:100%}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}

/* En-tête */
.top{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:22px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--text);text-decoration:none;white-space:nowrap}
.brand i{width:26px;height:18px;border-radius:4px;background:var(--accent);display:inline-block;position:relative}
.brand i::after{content:'';position:absolute;left:8px;bottom:-6px;width:10px;height:3px;background:var(--accent);border-radius:2px}
.top nav{display:flex;gap:18px;margin-left:auto;align-items:center}
.top nav a{color:var(--muted);text-decoration:none;font-weight:600;font-size:15px}
.top nav a:hover{color:var(--text)}
.lang{border:1px solid var(--line);border-radius:8px;padding:3px 9px;font-size:13px!important}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;padding:11px 20px;font-weight:700;text-decoration:none;border:1px solid var(--line);color:var(--text);background:var(--panel);white-space:nowrap}
.btn.pri{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.pri:hover{filter:brightness(1.08)}
.top .btn{padding:8px 14px}
@media (max-width:820px){.top nav a:not(.btn):not(.lang):not(.login){display:none}}
@media (max-width:560px){.top .wrap{gap:10px}.top nav{gap:10px}.brand{font-size:16px}.top nav .login{display:none}.top .btn{padding:7px 12px;font-size:14px}}

/* Accroche */
.hero{background:radial-gradient(circle at 80% 10%,#26345f 0,transparent 55%),radial-gradient(circle at 10% 90%,#1d2a4d 0,transparent 50%),var(--dark);color:#fff;padding:72px 0 80px}
.hero .wrap{display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(34px,4.6vw,54px);line-height:1.08;margin:0 0 18px;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--accent2)}
.hero p.lead{font-size:19px;color:#c9cfdc;margin:0 0 28px;max-width:34em}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap}
.hero .btn:not(.pri){background:transparent;color:#fff;border-color:#3a4252}
.hero small{display:block;margin-top:16px;color:#9aa3b5}
.tvbox{position:relative}
.tv{position:relative;aspect-ratio:16/9;border-radius:14px;background:#000;border:10px solid #1b1f27;box-shadow:0 30px 80px rgba(0,0,0,.55);overflow:hidden}
.tv-foot{width:28%;height:12px;margin:0 auto;background:#1b1f27;border-radius:0 0 10px 10px}
.tvlabel{position:absolute;left:14px;bottom:30px;background:rgba(0,0,0,.7);color:#fff;font-size:13px;font-weight:600;padding:4px 10px;border-radius:20px;z-index:3}
@media (max-width:900px){.hero .wrap{grid-template-columns:1fr}.hero{padding:48px 0 56px}}

/* Sections */
section{padding:76px 0}
section.alt{background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.kicker{color:var(--accent);font-weight:800;font-size:13px;letter-spacing:.08em;text-transform:uppercase}
h2{font-size:clamp(28px,3.2vw,38px);line-height:1.15;margin:8px 0 14px;letter-spacing:-.01em}
.sub{color:var(--muted);font-size:18px;max-width:40em;margin:0 0 40px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
@media (max-width:900px){.grid3{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.grid3,.grid2{grid-template-columns:1fr}}
.feat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
section.alt .feat{background:var(--bg)}
.feat .ic{font-size:26px;line-height:1;margin-bottom:12px}
.feat h3{margin:0 0 6px;font-size:18px}
.feat p{margin:0;color:var(--muted);font-size:15px}

/* Gabarits */
.tpls{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:900px){.tpls{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.tpls{grid-template-columns:1fr}}
.tpl{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.tpl .th{aspect-ratio:16/9;background:#000;position:relative}
.tpl .th.v{aspect-ratio:auto;height:100%;min-height:320px}
.tpl .m{padding:14px 16px}
.tpl .m b{display:block}
.tpl .m span{color:var(--muted);font-size:14px}

/* Étapes */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:760px){.steps{grid-template-columns:1fr}}
.step{position:relative;padding:22px 22px 22px 70px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}
.step::before{counter-increment:s;content:counter(s);position:absolute;left:20px;top:20px;width:34px;height:34px;border-radius:50%;background:var(--accent);color:#fff;font-weight:800;display:grid;place-items:center}
.step h3{margin:0 0 4px;font-size:17px}
.step p{margin:0;color:var(--muted);font-size:15px}

/* Tarifs */
.plans{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;max-width:900px}
@media (max-width:700px){.plans{grid-template-columns:1fr}}
.plan{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:28px;display:flex;flex-direction:column}
.plan.hl{border:2px solid var(--accent);box-shadow:0 10px 40px rgba(61,90,254,.15)}
.plan .tag{align-self:flex-start;background:var(--accent);color:#fff;font-size:12px;font-weight:800;padding:3px 10px;border-radius:20px;margin-bottom:10px}
.plan h3{margin:0;font-size:22px}
.plan .for{color:var(--muted);margin:4px 0 18px}
.price{font-size:40px;font-weight:800;letter-spacing:-.02em;line-height:1.1}
.price small{font-size:16px;font-weight:600;color:var(--muted)}
.plus{color:var(--muted);margin:6px 0 18px}
.plan ul{list-style:none;padding:0;margin:0 0 24px;display:grid;gap:9px}
.plan li{padding-left:26px;position:relative}
.plan li::before{content:'✓';position:absolute;left:0;color:var(--ok);font-weight:800}
.plan .btn{margin-top:auto}
.note{color:var(--muted);font-size:14px;margin-top:22px;max-width:900px}

/* Matériel */
.hw{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media (max-width:900px){.hw{grid-template-columns:1fr 1fr}}
.hw div{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px}
section.alt .hw div{background:var(--bg)}
.hw b{display:block;margin-bottom:4px}
.hw span{color:var(--muted);font-size:14px}

/* FAQ */
.faq{max-width:860px}
.faq details{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin-bottom:10px}
.faq summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::after{content:'+';color:var(--accent);font-size:22px;line-height:1}
.faq details[open] summary::after{content:'–'}
.faq details p{color:var(--muted);margin:10px 0 0}

/* Appel final et pied de page */
.final{background:var(--dark);color:#fff;text-align:center;padding:70px 0}
.final h2{color:#fff}
.final p{color:#c3c9d6;font-size:18px;margin:0 auto 26px;max-width:36em}
footer{padding:30px 0;color:var(--muted);font-size:14px}
footer .wrap{display:flex;gap:18px;flex-wrap:wrap;align-items:center}
footer .sp{flex:1}