:root{--bg1:#eef2f7;--bg2:#d5dce8;--ink:#16233a;--ink2:#5a6778;--accent:#2f78c9;--card:rgba(255,255,255,.72);--edge:rgba(255,255,255,.85);--line:rgba(22,35,58,.1);color-scheme:light dark}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg1:#1a2335;--bg2:#0a0f19;--ink:#eaf0f8;--ink2:#9dabc2;--accent:#86b6ff;--card:rgba(22,30,48,.78);--edge:rgba(190,215,255,.22);--line:rgba(190,215,255,.14)}}
:root[data-theme=dark]{--bg1:#1a2335;--bg2:#0a0f19;--ink:#eaf0f8;--ink2:#9dabc2;--accent:#86b6ff;--card:rgba(22,30,48,.78);--edge:rgba(190,215,255,.22);--line:rgba(190,215,255,.14)}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;font:16px/1.6 'Figtree',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;color:var(--ink);background:radial-gradient(120% 70% at 50% 0%,var(--bg1),var(--bg2)) fixed;-webkit-font-smoothing:antialiased;
  padding:calc(env(safe-area-inset-top,0px) + 20px) 16px calc(env(safe-area-inset-bottom,0px) + 40px)}
main{max-width:720px;margin:0 auto}
header{display:flex;gap:14px;align-items:center;margin:4px 0 18px}
header img{width:56px;height:56px;border-radius:14px;box-shadow:0 10px 24px rgba(20,50,100,.25);flex:none}
header h1{margin:0;font-size:1.7rem;line-height:1.15;letter-spacing:-.02em;font-weight:800}
header p{margin:2px 0 0;color:var(--ink2);font-size:.9rem}
nav{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 18px}
nav a{padding:7px 13px;border-radius:13px;background:var(--card);border:1px solid var(--edge);color:var(--ink);text-decoration:none;font-weight:700;font-size:.85rem}
nav a[aria-current=page]{background:var(--accent);color:#fff;border-color:transparent}
.card{background:var(--card);border:1px solid var(--edge);border-radius:22px;padding:6px 20px 14px;margin:0 0 14px;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);box-shadow:0 12px 30px rgba(15,35,75,.08)}
h2{font-size:1.12rem;margin:18px 0 6px;letter-spacing:-.01em}
h3{font-size:.98rem;margin:14px 0 4px}
p,li{color:var(--ink)}
ul{padding-left:1.2em;margin:6px 0}
li{margin:3px 0}
small,.muted{color:var(--ink2)}
a{color:var(--accent)}
.summary{font-size:1.02rem}
.summary li{margin:6px 0}
table{width:100%;border-collapse:collapse;font-size:.9rem;margin:8px 0}
td,th{border-bottom:1px solid var(--line);padding:8px 6px;text-align:left;vertical-align:top}
th{color:var(--ink2);font-weight:700}
.caps{text-transform:uppercase;font-size:.9rem}
footer{margin-top:24px;text-align:center;color:var(--ink2);font-size:.82rem}
.btn{display:inline-block;padding:11px 18px;border-radius:15px;background:var(--accent);color:#fff;text-decoration:none;font-weight:800}
details{border-bottom:1px solid var(--line);padding:8px 0}
summary{font-weight:700;cursor:pointer}