:root{--main:#2563eb;--accent:#f59e0b;--bg:#f6f9ff;--ink:#172033;--muted:#64748b}*{box-sizing:border-box}body{font-family:"Helvetica Neue",Arial,sans-serif;margin:0;background:var(--bg);color:var(--ink);line-height:1.7}.disclaimer{background:#e2e8f0;text-align:center;font-size:.8rem;padding:6px;color:#475569}header{background:rgba(255,255,255,.9);backdrop-filter:blur(12px);padding:1rem 5%;display:flex;justify-content:space-between;align-items:center;box-shadow:0 8px 30px rgba(15,23,42,.08);position:sticky;top:0;z-index:10}.logo{font-size:1.35rem;font-weight:900;color:var(--main);text-decoration:none}nav ul{list-style:none;display:flex;gap:18px;margin:0;padding:0;flex-wrap:wrap}nav a{text-decoration:none;color:var(--ink);font-weight:800}.hero{min-height:46vh;display:grid;place-items:center;text-align:center;color:white;padding:56px 20px;background:linear-gradient(135deg,var(--main),#0ea5e9);border-radius:0 0 38px 38px}.hero h1{font-size:clamp(2rem,6vw,3.5rem);margin:8px 0}.hero p{max-width:720px;margin:0 auto}.tag{display:inline-block;background:rgba(255,255,255,.2);padding:6px 18px;border-radius:999px;font-weight:900}.container{max-width:1100px;margin:3.5rem auto;padding:0 20px}.section-title{text-align:center;font-size:clamp(1.5rem,4vw,2.2rem);margin-bottom:1.6rem}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}.card{background:white;border-radius:24px;padding:24px;box-shadow:0 14px 35px rgba(15,23,42,.07);border:1px solid #e2e8f0}.card h3{margin:0 0 8px;color:var(--main)}.pill-list{display:flex;gap:10px;flex-wrap:wrap;padding:0;list-style:none}.pill-list li{background:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe;border-radius:999px;padding:9px 14px;font-weight:800}.message{background:linear-gradient(135deg,#fff7ed,#eff6ff);border:1px solid #fed7aa;border-radius:26px;padding:28px;text-align:center}.btns{text-align:center;margin-top:28px}.btn{display:inline-block;margin:6px;padding:10px 18px;border-radius:999px;text-decoration:none;font-weight:900;color:white;background:var(--main)}footer{text-align:center;padding:2rem;margin-top:40px;background:#0f172a;color:#fff}@media(max-width:680px){header{align-items:flex-start;flex-direction:column;gap:8px}.hero{border-radius:0 0 26px 26px}}


/* page top fixed button */
.page-top-btn {
    position: fixed;
    right: 18px;
    bottom: 18px;
    z-index: 9999;
    width: 120px;
    display: block;
    transition: transform .2s ease, opacity .2s ease;
}

.page-top-btn:hover {
    transform: translateY(-5px) scale(1.03);
}

.page-top-btn img {
    width: 100%;
    display: block;
}

@media (max-width: 600px) {
    .page-top-btn {
        width: 86px;
        right: 12px;
        bottom: 12px;
    }
}