:root{
  --navy:#063f5c; --teal:#0c9ab1; --coral:#e84b3c; --sand:#fff4dc; --ink:#15313d;
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:linear-gradient(180deg,#e9fbff,#fff4dc);color:var(--ink)}
.header{padding:28px 18px;text-align:center;background:linear-gradient(rgba(6,63,92,.86),rgba(6,63,92,.92));color:white}
.logo{max-width:210px;width:70%;height:auto;margin:0 auto 10px;display:block}
.tag{font-size:1.85rem;font-weight:800;margin:8px 0}
.date{font-size:1.1rem;margin:6px 0 18px}
.nav{position:sticky;top:0;z-index:10;display:flex;overflow:auto;gap:8px;padding:10px;background:#052f45}
.nav a{white-space:nowrap;color:white;text-decoration:none;font-weight:700;padding:10px 12px;border-radius:999px;background:rgba(255,255,255,.09)}
.container{padding:20px;max-width:960px;margin:0 auto}
.card{background:white;border-radius:18px;padding:20px;margin:18px 0;box-shadow:0 8px 22px rgba(0,0,0,.12)}
h1,h2{color:var(--navy);line-height:1.1}
p,li{font-size:16px;line-height:1.55}
.button{display:block;text-align:center;background:var(--coral);color:white;padding:14px 18px;margin:18px auto;border-radius:12px;text-decoration:none;font-weight:800;max-width:330px}
.secondary{background:var(--teal)}
img{max-width:100%;height:auto;border-radius:14px}
.grid{display:grid;grid-template-columns:1fr;gap:14px}
.price{border-left:5px solid var(--teal);padding:12px;background:#f4fdff;border-radius:12px}
.footer{text-align:center;background:var(--navy);color:white;padding:20px;font-size:14px}
.footer a{color:white}
@media(min-width:720px){.grid{grid-template-columns:repeat(3,1fr)}.tag{font-size:2.5rem}.nav{justify-content:center}}