:root{--grad:linear-gradient(180deg,#0a5378 0%,#062a3f 45%,#03192a 100%);--bg:#062a3f;--card:#0b4060;--line:#1a5f85;--cyan:#22d3ee;--sky:#7dd3fc;--head:#f0fbff;--body:#a9cadb;--r:8px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg) var(--grad) fixed;min-height:100vh;color:var(--body);font:16px/1.65 Inter,"Noto Sans Devanagari",system-ui,sans-serif}
h1,h2,h3{font-family:"Plus Jakarta Sans","Noto Sans Devanagari",Inter,sans-serif;color:var(--head);line-height:1.15;margin:0 0 .5em;letter-spacing:-.02em}
a{color:var(--sky);text-decoration:none}a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
nav{position:sticky;top:0;z-index:5;background:var(--navbg,rgba(6,42,63,.72));backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;gap:24px;height:60px}
.brand{font:800 1.15rem "Plus Jakarta Sans",sans-serif;color:var(--head)}.brand:hover{text-decoration:none}
.brand i{color:var(--cyan);font-style:normal}
nav .links{display:flex;gap:20px;margin-left:auto;font-size:.95rem}nav .links a{color:var(--body)}
nav form{margin:0}nav input{width:150px}
input,select,textarea{background:var(--bg);border:1px solid var(--line);color:var(--head);border-radius:var(--r);padding:9px 12px;font:inherit;width:100%}
textarea{min-height:320px;font-family:ui-monospace,monospace;font-size:.9rem}
label{display:block;margin:16px 0 6px;color:var(--head);font-weight:600;font-size:.9rem}
.btn{display:inline-block;background:var(--cyan);color:#03303f;font-weight:700;border:0;border-radius:var(--r);padding:11px 20px;cursor:pointer;font-size:1rem}
.btn:hover{text-decoration:none;filter:brightness(1.1)}
.btn.ghost{background:none;color:var(--head);border:1px solid var(--line)}
.btn.sm{padding:5px 11px;font-size:.85rem}.btn.danger{color:#f87171;border-color:#7f1d1d}
.hero{padding:96px 0 64px}.hero h1{font-size:clamp(2.2rem,6vw,4rem);max-width:15ch}.hero p{max-width:52ch;font-size:1.1rem}
.hero .row{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.two{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,440px),1fr));gap:14px}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;color:var(--body)}
a.card:hover{border-color:var(--cyan);text-decoration:none}
.card h3{font-size:1.15rem;margin-bottom:.3em}
.badge{display:inline-block;border:1px solid var(--line);border-radius:99px;padding:1px 10px;font-size:.78rem;margin:8px 6px 0 0;color:var(--body)}
.badge.hot{border-color:var(--cyan);color:var(--cyan)}
section{padding:36px 0}
.pdfbox{display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap;background:var(--card);border:1px solid var(--cyan);border-radius:var(--r);padding:16px 20px;margin:24px 0}
.crumbs{font-size:.85rem}
.prose{max-width:68ch;font-size:calc(18px*var(--fs,1));line-height:1.75}
.prose blockquote{border-left:3px solid var(--cyan);margin:1.2em 0;padding:.2em 1em;background:var(--card)}
.prose pre{background:var(--card);padding:14px;overflow:auto;border-radius:var(--r)}
.prose table{border-collapse:collapse;display:block;overflow-x:auto}.prose td,.prose th{border:1px solid var(--line);padding:6px 12px}
.prose h2,.prose h3{margin-top:1.6em}
.prose img{max-width:100%;height:auto;border-radius:var(--r);margin:1em 0}
iframe.pdf{width:100%;height:80vh;border:1px solid var(--line);border-radius:var(--r);background:#fff}
table.t{width:100%;border-collapse:collapse}.t th,.t td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:middle}
.t form{display:inline}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin-bottom:24px}
.stats b{display:block;font:700 2rem "Plus Jakarta Sans",sans-serif;color:var(--head)}
.err{color:#f87171}
footer{border-top:1px solid var(--line);padding:28px 0;margin-top:48px;font-size:.9rem}
[lang=hi]{line-height:1.9}
@media(max-width:640px){nav .links{display:none}nav form{margin-left:auto}}
@media print{nav,footer,.pdfbox,.share,iframe,.noprint{display:none!important}body{background:#fff;color:#000}h1,h2,h3{color:#000}.prose{max-width:none}}

[data-theme=light]{--grad:none;--bg:#f4f9fc;--card:#fff;--line:#cfe0e8;--cyan:#0891b2;--sky:#0369a1;--head:#0b2a3b;--body:#2c4a5e;--navbg:rgba(244,249,252,.85)}
[data-theme=light] .btn{color:#fff}[data-theme=light] .btn.ghost{color:var(--head)}
[data-theme=light] .badge.hot{color:#0e7490}
button{font-family:inherit}
nav .links a.on{color:var(--cyan)}
nav .tools{display:flex;gap:6px;align-items:center}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}
.chip{border:1px solid var(--line);background:none;color:var(--body);border-radius:99px;padding:4px 14px;cursor:pointer;font-size:.88rem}
.chip.on{background:var(--cyan);color:#03303f;border-color:var(--cyan)}
.filters{display:flex;gap:10px;flex-wrap:wrap}.filters input{flex:1;min-width:200px}.filters select{width:170px}
.muted{opacity:.8;font-size:.9rem}
.ctrls{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}
.toc{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:10px 16px;margin:18px 0;max-width:68ch}
.toc summary{cursor:pointer;font-weight:600;color:var(--head)}.toc a{display:block;padding:2px 0}.toc .l3{padding-left:16px;font-size:.92rem}
.credit{font-size:.9rem;border-left:3px solid var(--line);padding-left:12px;margin:18px 0;max-width:68ch}
.series{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:12px 18px;margin:20px 0;max-width:68ch}
.series ol{margin:6px 0 0;padding-left:20px}.series li.cur{color:var(--cyan);font-weight:600}
.pn{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0}.pn a{flex:1;min-width:220px}
.progress{height:8px;background:var(--line);border-radius:99px;overflow:hidden;margin:10px 0}.progress i{display:block;height:100%;width:0;background:var(--cyan);transition:width .3s}
.check{display:flex;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}.check input{width:auto}
.check.done span{text-decoration:line-through;opacity:.65}
.hero .sub{opacity:.85}
.stage{min-height:70vh;display:grid;place-items:center;text-align:center}
.spin{width:46px;height:46px;border:4px solid var(--line);border-top-color:var(--cyan);border-radius:50%;margin:0 auto 20px;animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.admin-bar{display:flex;gap:8px;flex-wrap:wrap}
.note{background:var(--card);border:1px solid var(--cyan);border-radius:var(--r);padding:12px 16px;margin:14px 0}
.warn{border-color:#f59e0b}
@media print{.ctrls,.toc,.series,.pn{display:none!important}}