*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:#f8fafc;color:#1e293b;font-family:"Segoe UI",system-ui,sans-serif;line-height:1.75}
header.eth{background:linear-gradient(rgba(15,23,42,.6),rgba(15,23,42,.7)),url(img/header-bg.jpg) center/cover no-repeat;padding:32px 36px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:20px;color:#fff;border-bottom:4px solid #0d9488}
.brand{display:flex;align-items:center;gap:16px}
.logo{width:58px;height:58px;border-radius:50%;overflow:hidden;border:3px solid #14b8a6;flex-shrink:0;background:#fff}
.logo img{width:100%;height:100%;object-fit:cover}
.brand h1{font-size:1.5rem;font-weight:600;margin:0}
.brand p{font-size:.78rem;opacity:.85;margin:3px 0 0}
nav.main{display:flex;gap:6px;flex-wrap:wrap}
nav.main a{color:#e2e8f0;text-decoration:none;padding:9px 16px;font-size:.84rem;border-radius:6px}
nav.main a.on{background:#14b8a6;color:#0f172a}
main{max-width:820px;margin:0 auto;padding:42px 26px 90px}
h2{font-size:1.4rem;margin:38px 0 16px;color:#0f766e;font-weight:600}
p,li{margin:0 0 16px}
ul{margin:0 0 16px 1.5em}
img{width:100%;height:auto;display:block;margin:20px 0;border-radius:8px}
.cap{color:#64748b;font-size:.84rem;margin:-12px 0 22px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:20px 0}
.grid img{margin:0}
table{width:100%;border-collapse:collapse;margin:16px 0 22px;font-size:.94rem;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.05)}
th,td{border-bottom:1px solid #e2e8f0;padding:11px 10px;text-align:left}
th{color:#0f766e;background:#f0fdfa}
.note{background:#f0fdfa;padding:18px;margin:24px 0;border-left:5px solid #14b8a6;font-size:.94rem}
footer.eth{background:#0f172a;color:#94a3b8;padding:40px 26px 28px;font-size:.9rem}
.fgrid{max-width:1020px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr 1fr;gap:32px}
footer.eth a{color:#5eead4;text-decoration:none}
footer.eth h3{color:#fff;font-size:1rem;margin:0 0 14px;font-weight:500}
.end{color:#64748b;font-size:.84rem;margin-top:24px}
a{color:#0f766e}
@media(max-width:740px){.grid,.fgrid{grid-template-columns:1fr}header.eth{flex-direction:column;text-align:center}nav.main{justify-content:center}}