:root{
  --bg:#0b0f1a; --bg-2:#0f1525; --panel:#131b30; --panel-2:#172139;
  --ink:#eef2ff; --muted:#9aa6c4; --line:rgba(255,255,255,.08);
  --brand:#6ea8ff; --brand-2:#9b7bff; --strong:#ffb24d; --neo:#4de0c0; --aroma:#ff6bb5;
  --radius:18px; --shell:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:radial-gradient(1200px 600px at 50% -10%,#16203a 0,var(--bg) 60%);
  color:var(--ink); font-family:Manrope,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  line-height:1.6; -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:"Space Grotesk",Manrope,sans-serif;line-height:1.15;margin:0}
.shell{max-width:var(--shell);margin:0 auto;padding:0 22px;width:100%}
.shell.narrow{max-width:760px}
.muted{color:var(--muted)}

/* Header */
.site-header{position:sticky;top:0;z-index:20;backdrop-filter:blur(12px);
  background:rgba(11,15,26,.72);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-family:"Space Grotesk";font-weight:700;font-size:20px;letter-spacing:.2px}
.brand-accent{color:var(--brand)}
.brand-dot{width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 0 18px var(--brand)}
.nav-links{display:flex;gap:6px}
.nav-links a{padding:8px 14px;border-radius:999px;color:var(--muted);font-weight:600;font-size:15px}
.nav-links a:hover{color:var(--ink);background:var(--panel)}

/* Hero */
.hero{padding:84px 0 56px;text-align:center}
.eyebrow{display:inline-block;font-weight:700;font-size:13px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--brand);background:rgba(110,168,255,.1);border:1px solid rgba(110,168,255,.25);padding:6px 14px;border-radius:999px}
.hero h1{font-size:clamp(38px,7vw,72px);font-weight:700;margin:22px 0 0}
.grad{background:linear-gradient(120deg,var(--brand),var(--brand-2) 60%,var(--neo));-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{max-width:680px;margin:18px auto 0;color:var(--muted);font-size:clamp(16px,2.2vw,20px)}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:30px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:16px;
  padding:14px 26px;border-radius:999px;border:1px solid transparent;transition:.18s transform,.18s box-shadow,.18s background;cursor:pointer}
.btn:hover{transform:translateY(-2px)}
.btn.primary{background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#0a0e18;box-shadow:0 12px 30px rgba(110,168,255,.32)}
.btn.ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn.ghost:hover{background:var(--panel)}
.btn.block{display:flex;width:100%;margin-top:6px}
.trust-row{list-style:none;display:flex;gap:10px 26px;justify-content:center;flex-wrap:wrap;margin:34px 0 0;padding:0;color:var(--muted);font-weight:600;font-size:14px}
.trust-row li{position:relative;padding-left:20px}
.trust-row li::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:8px;height:8px;border-radius:50%;background:var(--neo)}

/* Sections */
.section{padding:64px 0}
.section.alt{background:linear-gradient(180deg,transparent,rgba(255,255,255,.02))}
.section-title{font-size:clamp(28px,4vw,42px);font-weight:700;text-align:center}
.section-sub{max-width:640px;margin:14px auto 0;text-align:center;color:var(--muted)}

/* Brand cards */
.brand-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:24px;margin-top:42px}
.brand-card{background:linear-gradient(180deg,var(--panel),var(--bg-2));border:1px solid var(--line);
  border-radius:var(--radius);padding:30px;display:flex;flex-direction:column;position:relative;overflow:hidden}
.brand-card::before{content:"";position:absolute;inset:0 0 auto 0;height:4px}
.brand-card.strong8k::before{background:linear-gradient(90deg,var(--strong),#ff7a59)}
.brand-card.neo4k::before{background:linear-gradient(90deg,var(--neo),var(--brand))}
.brand-card.aroma::before{background:linear-gradient(90deg,var(--aroma),var(--brand-2))}
.brand-card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.brand-badge{font-family:"Space Grotesk";font-weight:700;font-size:15px;padding:6px 12px;border-radius:8px}
.strong8k .brand-badge{background:rgba(255,178,77,.14);color:var(--strong)}
.neo4k .brand-badge{background:rgba(77,224,192,.14);color:var(--neo)}
.aroma .brand-badge{background:rgba(255,107,181,.14);color:var(--aroma)}
.brand-host{color:var(--muted);font-size:14px;font-weight:600}
.brand-card h3{font-size:22px;margin-bottom:10px}
.brand-card p{color:var(--muted);margin:0 0 16px}
.brand-points{list-style:none;padding:0;margin:0 0 20px;display:grid;gap:9px}
.brand-points li{position:relative;padding-left:24px;font-size:15px}
.brand-points li::before{content:"✓";position:absolute;left:0;color:var(--neo);font-weight:800}
.brand-card .btn{margin-top:auto}
.brand-alt{display:inline-block;margin-top:10px;text-align:center;color:var(--muted);font-weight:600;font-size:13.5px}
.brand-alt:hover{color:var(--ink)}

/* Compare table */
.table-wrap{margin-top:36px;overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}
.compare{width:100%;border-collapse:collapse;min-width:560px}
.compare th,.compare td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:15px}
.compare thead th{background:var(--panel-2);font-family:"Space Grotesk";font-size:16px}
.compare tbody tr:last-child td{border-bottom:0}
.compare td:first-child{color:var(--muted);font-weight:600}
.compare a{color:var(--brand);font-weight:700}

/* Devices */
.device-grid{list-style:none;padding:0;margin:38px 0 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.device-grid li{background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:11px 20px;font-weight:600;font-size:15px}

/* FAQ */
details{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:4px 20px;margin-top:14px}
summary{cursor:pointer;font-weight:700;padding:16px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-size:22px;color:var(--brand);font-weight:700}
details[open] summary::after{content:"–"}
details p{margin:0 0 18px;color:var(--muted)}

/* Footer */
.footer{border-top:1px solid var(--line);padding:54px 0 28px;margin-top:40px;background:var(--bg-2)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
.footer-grid p{margin:14px 0 0;max-width:420px;font-size:14px}
.footer-title{display:block;font-family:"Space Grotesk";font-weight:700;margin-bottom:12px}
.footer-grid a{display:block;color:var(--muted);padding:5px 0;font-weight:600}
.footer-grid a:hover{color:var(--ink)}
.footer-copy{margin-top:34px;padding-top:22px;border-top:1px solid var(--line);color:var(--muted);font-size:13px;text-align:center}

@media(max-width:820px){
  .nav-links{display:none}
  .brand-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
}