:root { --orange:#f36a10; --orange-light:#ff8b3d; --navy:#07111f; --navy-2:#0d1c2e; --white:#fff; --muted:#a8b3c2; --line:rgba(255,255,255,.14); --display:"Barlow Condensed",Impact,sans-serif; --body:"Inter",Arial,sans-serif; }
* { box-sizing:border-box; }
html { min-height:100%; background:var(--navy); scroll-behavior:smooth; }
body { min-height:100vh; margin:0; color:var(--white); background:radial-gradient(circle at 90% 0,rgba(243,106,16,.25),transparent 34rem),var(--navy); font:16px/1.55 var(--body); }
a { color:inherit; }
button,input { font:inherit; }
.skip-link { position:fixed; z-index:100; top:-80px; left:16px; padding:12px 16px; color:var(--navy); background:white; font-weight:800; }
.skip-link:focus { top:16px; }
.install-header { min-height:80px; padding:10px clamp(18px,5vw,72px); display:flex; align-items:center; justify-content:space-between; gap:20px; border-bottom:1px solid var(--line); background:rgba(7,17,31,.9); backdrop-filter:blur(18px); }
.install-brand { display:flex; align-items:center; gap:12px; text-decoration:none; }
.install-brand img { width:58px; height:58px; padding:2px; object-fit:contain; background:white; border-radius:12px; }
.install-brand span { display:grid; line-height:1.05; }
.install-brand strong { font:800 1.4rem var(--display); text-transform:uppercase; letter-spacing:.04em; }
.install-brand small { margin-top:5px; color:var(--muted); font-size:.7rem; font-weight:700; letter-spacing:.1em; text-transform:uppercase; }
.header-link { padding:10px 15px; color:var(--navy); background:var(--orange); border-radius:8px; text-decoration:none; font-weight:800; }
main { width:min(1180px,100%); margin:auto; padding:0 22px 80px; }
.install-hero { min-height:680px; padding:clamp(56px,8vw,104px) 0; display:grid; grid-template-columns:minmax(0,1.25fr) minmax(300px,.75fr); align-items:center; gap:clamp(40px,7vw,100px); }
.eyebrow { margin:0 0 14px; color:var(--orange-light); font-size:.75rem; font-weight:800; letter-spacing:.17em; text-transform:uppercase; }
h1,h2,h3 { margin-top:0; font-family:var(--display); line-height:.92; text-transform:uppercase; }
h1 { max-width:760px; margin-bottom:24px; font-size:clamp(4.2rem,9vw,8rem); letter-spacing:-.035em; }
.lead { max-width:720px; margin:0; color:var(--muted); font-size:clamp(1rem,2vw,1.18rem); }
.primary-actions { margin-top:32px; display:flex; flex-wrap:wrap; gap:12px; }
.primary-button,.secondary-button { min-height:54px; padding:13px 21px; display:inline-flex; align-items:center; justify-content:center; border-radius:9px; text-decoration:none; font-weight:800; cursor:pointer; }
.primary-button { color:var(--navy); background:var(--orange); border:2px solid var(--orange); }
.secondary-button { color:white; background:transparent; border:2px solid rgba(255,255,255,.36); }
.action-message { min-height:1.5em; margin:12px 0 0; color:#ffd1b3; font-size:.88rem; }
.qr-card { margin:0; padding:24px; color:var(--navy); background:white; border-radius:22px; box-shadow:0 28px 70px rgba(0,0,0,.3); }
.qr-card img { width:100%; height:auto; display:block; }
.qr-card figcaption { padding:14px 4px 12px; display:grid; text-align:center; }
.qr-card figcaption strong { font-size:1rem; }
.qr-card figcaption span { margin-top:4px; color:#536071; font-size:.78rem; }
.qr-card > a { display:block; padding:11px; color:var(--navy); text-align:center; border:1px solid #d9dee5; border-radius:8px; font-size:.85rem; font-weight:800; text-decoration:none; }
.device-guide { padding:clamp(60px,8vw,100px) 0; border-top:1px solid var(--line); }
.guide-heading { margin-bottom:34px; }
.guide-heading h2,.share-panel h2 { margin-bottom:0; font-size:clamp(3.2rem,6vw,5.8rem); }
.guide-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:16px; }
.guide-card { padding:clamp(26px,4vw,42px); background:var(--navy-2); border:1px solid var(--line); border-top:4px solid var(--orange); border-radius:16px; }
.device-label { color:var(--orange-light); font-size:.75rem; font-weight:800; letter-spacing:.14em; text-transform:uppercase; }
.guide-card h3 { margin:12px 0 26px; font-size:clamp(2.4rem,4vw,4rem); }
.guide-card ol { margin:0; padding:0; display:grid; gap:14px; list-style:none; }
.guide-card li { min-height:70px; padding:14px; display:grid; grid-template-columns:42px 1fr; align-items:center; gap:13px; background:rgba(255,255,255,.045); border-radius:10px; }
.guide-card li b { width:42px; height:42px; display:grid; place-items:center; color:var(--navy); background:var(--orange); border-radius:50%; font-family:var(--display); }
.guide-card li span { color:#d9e0e9; }
.share-panel { margin-top:18px; padding:clamp(28px,5vw,54px); display:grid; grid-template-columns:.8fr 1.2fr; align-items:center; gap:40px; background:linear-gradient(135deg,rgba(243,106,16,.18),rgba(255,255,255,.04)); border:1px solid rgba(243,106,16,.4); border-radius:18px; }
.share-panel p:last-child { margin-bottom:0; color:var(--muted); }
.share-link { display:grid; grid-template-columns:1fr auto; gap:8px; }
.share-link input { min-width:0; padding:14px 15px; color:var(--navy); background:white; border:0; border-radius:8px; }
.share-link button { padding:12px 18px; color:var(--navy); background:var(--orange); border:0; border-radius:8px; font-weight:800; cursor:pointer; }
footer { min-height:110px; padding:28px clamp(20px,5vw,72px); display:flex; align-items:center; justify-content:space-between; gap:24px; color:var(--muted); border-top:1px solid var(--line); font-size:.82rem; }
footer a { color:white; font-weight:800; }
button:focus-visible,a:focus-visible,input:focus-visible { outline:3px solid white; outline-offset:4px; }
@media (max-width:800px) { .install-hero { grid-template-columns:1fr; } .qr-card { width:min(420px,100%); justify-self:center; } .guide-grid,.share-panel { grid-template-columns:1fr; } }
@media (max-width:520px) { main { padding-inline:16px; } .install-brand small { display:none; } .install-brand img { width:52px; height:52px; } .header-link { font-size:.8rem; } .install-hero { padding-top:46px; } h1 { font-size:clamp(4rem,19vw,6rem); } .primary-actions { flex-direction:column; } .primary-button,.secondary-button { width:100%; } .share-link { grid-template-columns:1fr; } footer { align-items:flex-start; flex-direction:column; } }
@media (prefers-reduced-motion:reduce) { html { scroll-behavior:auto; } }