:root{--bg:#0f0a2a;--card:#1a1347;--card2:#241a5e;--text:#ece8ff;--dim:#b4aadf;--gold:#ffd23f;--accent:#7c4dff;--line:#33297a}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:radial-gradient(1200px 600px at 50% -10%,#2a1a66 0,#0f0a2a 60%) fixed;color:var(--text);font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;overflow-x:hidden}
body.menu-open{overflow:hidden}
a{color:#9ec5ff}
img{max-width:100%;height:auto}

/* ---------- header ---------- */
.bar{position:sticky;top:0;z-index:50;background:rgba(15,10,42,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;max-width:960px;margin:0 auto;padding:10px 20px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.5px;color:#fff;text-decoration:none;font-size:19px;white-space:nowrap}
.brand img{width:44px;height:44px;border-radius:12px;box-shadow:0 0 0 2px rgba(255,255,255,.12),0 6px 18px rgba(124,77,255,.45)}
.brand b{color:var(--gold)}
nav{display:flex;align-items:center;gap:4px}
nav a{padding:9px 14px;border-radius:12px;text-decoration:none;color:var(--dim);font-weight:700}
nav a:hover{color:#fff;background:rgba(255,255,255,.07)}
nav a.on{color:#fff;background:rgba(124,77,255,.28)}
.burger{display:none;width:46px;height:46px;border:0;border-radius:14px;background:rgba(255,255,255,.08);cursor:pointer;position:relative;flex:none}
.burger span{position:absolute;left:12px;right:12px;height:3px;border-radius:2px;background:#fff;transition:transform .25s,opacity .2s,top .25s}
.burger span:nth-child(1){top:15px}.burger span:nth-child(2){top:22px}.burger span:nth-child(3){top:29px}
.burger.open span:nth-child(1){top:22px;transform:rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){top:22px;transform:rotate(-45deg)}

main{max-width:960px;margin:0 auto;padding:12px 20px 56px}
.hero{display:flex;align-items:center;gap:26px;background:linear-gradient(135deg,var(--card2),var(--card));border:1px solid var(--line);border-radius:24px;padding:30px 28px;margin:12px 0 24px}
.hero img.logo{width:132px;height:132px;border-radius:30px;flex:none;box-shadow:0 12px 34px rgba(124,77,255,.5),0 0 0 3px rgba(255,255,255,.1)}
.hero.slim{padding:22px 24px}
h1{margin:0 0 6px;font-size:clamp(26px,5.5vw,38px);line-height:1.18}
h1 span{color:var(--gold)}
.meta{color:var(--dim);margin:0}
h2{margin:34px 0 8px;font-size:clamp(19px,4.5vw,23px);color:#fff;padding-top:8px;border-top:1px solid var(--line);scroll-margin-top:84px}
p,li{color:#dcd6fb;overflow-wrap:anywhere}
ul{padding-left:22px}
li{margin:4px 0}
.toc{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px 22px;margin:0 0 8px}
.toc ol{margin:6px 0 0;padding-left:24px;columns:2;column-gap:28px}
.toc li{break-inside:avoid}
.toc a{text-decoration:none;display:inline-block;padding:2px 0}
.toc a.cur{color:var(--gold);font-weight:700}
.note{background:rgba(124,77,255,.14);border:1px solid #5a3fd0;border-radius:14px;padding:14px 18px;margin:16px 0}

/* ---------- tables ---------- */
.tbl{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:12px 0}
table{width:100%;border-collapse:separate;border-spacing:0;background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--card2);color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.7px}
tr:last-child td{border-bottom:0}
td:first-child{color:#fff}

.btn{display:inline-block;background:linear-gradient(#34d98f,#1fb574);color:#06241a;font-weight:800;text-decoration:none;padding:14px 26px;border-radius:14px;border:0;box-shadow:0 4px 0 #168a58;cursor:pointer;font-size:16px;text-align:center}
.btn:active{transform:translateY(2px);box-shadow:0 2px 0 #168a58}
.btn.alt{background:linear-gradient(#8a67ff,#6a45f0);color:#fff;box-shadow:0 4px 0 #4a2fc0}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:18px 0}
.cards .c{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px}
.cards .c b{display:block;color:#fff;margin-bottom:4px;font-size:18px}
footer{max-width:960px;margin:0 auto;padding:22px 20px 40px;color:var(--dim);border-top:1px solid var(--line);font-size:14px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
footer img{width:30px;height:30px;border-radius:8px}

/* ---------- phones and small tablets ---------- */
@media(max-width:720px){
  .burger{display:block}
  nav{position:fixed;left:0;right:0;top:66px;flex-direction:column;align-items:stretch;gap:6px;padding:16px 20px 22px;background:rgba(18,12,52,.98);border-bottom:1px solid var(--line);box-shadow:0 24px 40px rgba(0,0,0,.5);transform:translateY(-12px);opacity:0;visibility:hidden;transition:transform .22s,opacity .22s,visibility .22s}
  nav.open{transform:none;opacity:1;visibility:visible}
  nav a{padding:15px 16px;font-size:17px;background:rgba(255,255,255,.05)}
  .brand{font-size:17px}.brand img{width:40px;height:40px}
  main{padding:8px 16px 44px}
  .hero{flex-direction:column;text-align:center;padding:24px 18px;gap:16px}
  .hero img.logo{width:104px;height:104px;border-radius:24px}
  .hero.slim{flex-direction:row;text-align:left;padding:16px 16px;gap:14px}
  .hero.slim img.logo{width:64px;height:64px;border-radius:16px}
  .toc{padding:14px 16px}.toc ol{columns:1}
  .toc a{padding:6px 0}
  .btn{display:block;width:100%}
  /* tables become stacked, labelled cards */
  table,thead,tbody,tr,th,td{display:block}
  table{background:none;border:0;border-radius:0}
  tr:first-child{display:none}
  tr{background:var(--card);border:1px solid var(--line);border-radius:14px;margin:0 0 12px;overflow:hidden}
  td{border-bottom:1px solid var(--line);padding:10px 14px}
  td:first-child{background:var(--card2);font-weight:700}
  td[data-label]::before{content:attr(data-label);display:block;font-size:11.5px;font-weight:800;text-transform:uppercase;letter-spacing:.8px;color:var(--gold);margin-bottom:2px}
  td:first-child::before{color:#b9a8ff}
  tr td:last-child{border-bottom:0}
}
@media(max-width:380px){.brand span{font-size:15px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}