:root{
  --bg:#f7f8fa;
  --card:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --accent:#1982ff;
  --border:rgba(0,0,0,.08);
  --shadow:0 8px 24px rgba(0,0,0,.06);
  --radius:18px;
}
*{box-sizing:border-box}
html,body{padding:0;margin:0;background:var(--bg);color:var(--text);font-family:ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1100px;padding:0 20px;margin:0 auto}
.nav{position:sticky;top:0;backdrop-filter:saturate(120%) blur(8px);background:rgba(255,255,255,.6);border-bottom:1px solid var(--border);z-index:30}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.logo{display:flex;gap:10px;align-items:center}
.logo img{width:34px;height:34px;border-radius:12px;border:1px solid var(--border);box-shadow:var(--shadow)}
.logo span{font-weight:700;letter-spacing:.2px}
.nav a:hover{opacity:.7}
.hero{position:relative;padding:86px 0 40px}
.grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-copy{padding:36px}
.kicker{display:inline-flex;align-items:center;gap:8px;background:#eef6ff;color:#0b61cc;border-radius:999px;padding:6px 12px;font-size:12px;border:1px solid #d8eaff}
h1{font-size:44px;line-height:1.05;margin:14px 0 10px}
p.lead{font-size:18px;color:var(--muted);margin:0 0 22px}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.button{background:var(--text);color:#fff;border-radius:12px;padding:12px 16px;border:1px solid var(--border);box-shadow:var(--shadow);font-weight:600}
.button.secondary{background:#fff;color:var(--text)}
.button:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(0,0,0,.08)}
.hero-art{padding:22px;min-height:360px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.phone{width:300px;height:560px;border-radius:38px;background:#fff;border:1px solid var(--border);box-shadow:0 30px 80px rgba(0,0,0,.12);position:relative;padding:16px;display:flex;flex-direction:column;gap:10px}
.status{height:8px;background:#f2f3f6;border-radius:8px}
.chat{flex:1;overflow:hidden;display:flex;flex-direction:column;gap:10px}
.msg{max-width:72%;padding:10px 14px;border-radius:16px;border:1px solid var(--border);box-shadow:var(--shadow);animation:pop .6s ease both}
.msg.me{align-self:flex-end;background:#eef6ff}
.msg.them{align-self:flex-start;background:#fff}
@keyframes pop{0%{transform:translateY(6px);opacity:0}100%{transform:none;opacity:1}}
.emoji{position:absolute;font-size:24px;opacity:.9;filter:saturate(120%);}
.section{padding:60px 0}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature{padding:22px}
.feature h3{margin:6px 0 8px}
.feature p{color:var(--muted);font-size:14px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.split .card{padding:26px}
.footer{padding:40px 0;color:var(--muted)}
.footer a{color:var(--muted)}
.footer .cols{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;border-top:1px solid var(--border);padding-top:18px}
.badge{font-size:12px;background:#f3f4f6;border:1px solid var(--border);border-radius:999px;padding:6px 10px;color:var(--muted)}
@media (max-width:960px){
  .grid,.cards,.split{grid-template-columns:1fr}
  .hero{padding:60px 0 20px}
  h1{font-size:36px}
}