:root{
  --navy:#1f3a5f; --teal:#0e7c86; --teal-d:#0b646c; --ink:#1b2430; --muted:#5b6675; --line:#dde2e8; --bg:#f4f6f8; --card:#fff; --warn:#fdf3e1;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55;font-size:16px}
a{color:var(--teal)}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#eef1f4;padding:1px 5px;border-radius:4px;font-size:.92em}
.wrap{max-width:760px;margin:0 auto;padding:0 16px}
.sr{position:absolute;left:-9999px}
.top{background:#fff;border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:12px;height:60px}
.brand{display:block;line-height:0}
.brand img{display:block;height:32px;width:auto}
.brand-sub{color:var(--muted);font-size:14px;padding-left:12px;border-left:1px solid var(--line);line-height:20px}
main{padding:20px 16px 8px}
.hero{padding:18px 0 8px}
.hero h1{font-size:26px;line-height:1.25;margin:0 0 8px}
.hero.small{padding:4px 0 4px}
.lead{margin:0 0 14px;color:var(--muted)}
.search{display:flex;gap:8px}
.search input{flex:1;min-width:0;font-size:18px;padding:12px 14px;border:2px solid #9aa4b1;border-radius:10px;background:#fff;text-transform:uppercase}
.search input::placeholder{text-transform:none}
.search input:focus{outline:none;border-color:var(--teal)}
button,.btn{display:inline-block;background:var(--teal);color:#fff;border:0;border-radius:10px;padding:12px 18px;font-size:16px;font-weight:700;text-decoration:none;cursor:pointer;white-space:nowrap}
button:hover,.btn:hover{background:var(--teal-d)}
.btn.ghost{background:#fff;color:var(--teal);border:2px solid var(--teal);padding:10px 14px}
.btn.small{padding:7px 12px;font-size:14px;border-radius:8px}
.hint{color:var(--muted);font-size:14px;margin:10px 0 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;margin:16px 0}
.card h1{font-size:22px;margin:0 0 8px;line-height:1.3}
.card h2{font-size:18px;margin:0 0 10px}
.help ul{padding-left:20px;margin:6px 0 10px}
.muted{color:var(--muted)}
.small{font-size:13px}
.tag{display:inline-block;background:#eef1f4;color:var(--muted);border-radius:6px;font-size:12px;padding:1px 7px}
.product{display:flex;gap:16px;align-items:center}
.pimg img{width:120px;height:120px;object-fit:contain;border-radius:10px;background:#fff;border:1px solid var(--line)}
.ph{display:inline-block;width:44px;height:44px;border-radius:8px;background:#eef1f4}
.ph.big{width:120px;height:120px}
.codes{display:flex;flex-wrap:wrap;gap:6px 16px;margin:0;color:var(--muted);font-size:15px}
.codes b{color:var(--ink)}
.docs-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.langs{display:flex;gap:6px;flex-wrap:wrap}
.langs a{border:1px solid var(--line);border-radius:8px;padding:4px 10px;text-decoration:none;color:var(--ink);font-size:14px}
.langs a.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.doclist{list-style:none;margin:8px 0 0;padding:0}
.doclist li{display:flex;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding:14px 0}
.dmeta{display:flex;flex-direction:column}
.dmeta .muted{font-size:14px}
.dact{display:flex;gap:8px}
.links{margin:12px 0 0;font-size:15px}
.cands{list-style:none;padding:0;margin:8px 0 0}
.cands li a{display:flex;gap:12px;align-items:center;padding:10px 0;border-top:1px solid var(--line);text-decoration:none;color:var(--ink)}
.cands img{width:48px;height:48px;object-fit:contain;border-radius:8px;border:1px solid var(--line);background:#fff}
.hist{padding-left:18px}
.back{margin:8px 0 24px}
.form{display:flex;flex-direction:column;gap:12px;margin-top:12px}
.form label{display:flex;flex-direction:column;gap:4px;font-weight:600;font-size:15px}
.form input,.form textarea{font:inherit;font-weight:400;padding:10px 12px;border:1px solid #9aa4b1;border-radius:8px}
.form .hp{position:absolute;left:-9999px}
.err{background:var(--warn);border-left:4px solid #b26a00;padding:8px 12px;border-radius:6px;margin:10px 0}
.err p{margin:2px 0}
.foot{color:var(--muted);font-size:14px;padding:12px 0 28px}
.foot p{margin:4px 0}
@media (max-width:560px){
  .hero h1{font-size:23px}
  .doclist li{flex-direction:column;align-items:stretch}
  .dact .btn{flex:1;text-align:center}
  .pimg img,.ph.big{width:88px;height:88px}
  .card h1{font-size:19px}
}
/* PDF viewer */
body.viewer{background:#525659;margin:0}
.vbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:10px;background:var(--navy);color:#fff;padding:8px 12px}
.vback{color:#fff;text-decoration:none;font-size:22px;padding:0 6px}
.vtitle{flex:1;font-weight:700;font-size:15px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#pages{display:flex;flex-direction:column;align-items:center;gap:10px;padding:10px 6px 30px}
#pages canvas{max-width:100%;height:auto;background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.4)}
.vload{color:#fff}