:root{--bg:#f7f7fc;--card:#ffffffcc;--tx:#141427;--mut:#5b5b78;--bd:#e3e3f0;--ac:#6d28d9;--ac2:#ec4899;--ac3:#06b6d4}
[data-theme=dark]{--bg:#0b0b17;--card:#16162acc;--tx:#eceaff;--mut:#a3a3c2;--bd:#2a2a45}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--tx);font-family:'Plus Jakarta Sans','Hind Siliguri',sans-serif;overflow-x:hidden;line-height:1.6}
a{color:inherit}.wrap{max-width:1180px;margin:0 auto;padding:0 16px}
.blob{position:fixed;border-radius:50%;filter:blur(90px);opacity:.35;z-index:-1;animation:fl 18s ease-in-out infinite alternate}
.b1{width:420px;height:420px;background:var(--ac);top:-100px;left:-120px}.b2{width:380px;height:380px;background:var(--ac2);top:30%;right:-140px;animation-delay:-6s}.b3{width:340px;height:340px;background:var(--ac3);bottom:-120px;left:30%;animation-delay:-12s}
@keyframes fl{to{transform:translate(60px,40px) scale(1.15)}}
.nav{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:20px;padding:14px 24px;backdrop-filter:blur(14px);background:color-mix(in srgb,var(--bg) 70%,transparent);border-bottom:1px solid var(--bd)}
.logo{font-weight:800;font-size:1.5rem;text-decoration:none}.logo span{background:linear-gradient(90deg,var(--ac),var(--ac2));-webkit-background-clip:text;color:transparent}
.nav nav{margin-left:auto;display:flex;gap:18px}.nav nav a{text-decoration:none;color:var(--mut);font-weight:600}.nav nav a:hover{color:var(--ac)}
#theme{border:1px solid var(--bd);background:var(--card);border-radius:10px;padding:6px 10px;cursor:pointer;color:var(--tx)}
.hero{text-align:center;padding:80px 16px 50px}.pill{display:inline-block;padding:6px 14px;border-radius:99px;background:var(--card);border:1px solid var(--bd);font-size:.9rem}
.hero h1{font-size:clamp(2rem,6vw,4rem);line-height:1.15;margin:18px 0}.hero em{font-style:normal;background:linear-gradient(90deg,var(--ac),var(--ac2),var(--ac3));background-size:200%;-webkit-background-clip:text;color:transparent;animation:sh 5s linear infinite}
@keyframes sh{to{background-position:200%}}.hero p{color:var(--mut);font-size:1.1rem}
.btn{display:inline-block;padding:10px 18px;border-radius:12px;background:linear-gradient(135deg,var(--ac),var(--ac2));color:#fff;text-decoration:none;font-weight:700;border:0;cursor:pointer;transition:.2s}.btn:hover{transform:translateY(-2px);box-shadow:0 10px 30px -10px var(--ac)}
.btn.ghost{background:var(--card);color:var(--tx);border:1px solid var(--bd)}.btn.big{padding:14px 26px;font-size:1.05rem}.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin:26px 0}
.stats{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}.stats div{background:var(--card);border:1px solid var(--bd);border-radius:16px;padding:12px 26px;min-width:120px}.stats b{display:block;font-size:1.6rem}.stats span{color:var(--mut);font-size:.85rem}
.sec{font-size:1.8rem;margin:60px 0 20px}
.paths{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px}
.path{position:relative;padding:22px;border-radius:20px;background:var(--card);border:1px solid var(--bd);backdrop-filter:blur(10px);cursor:pointer;transition:.25s;overflow:hidden}
.path:before{content:"";position:absolute;inset:0 0 auto;height:5px;background:var(--c)}.path:hover{transform:translateY(-5px);box-shadow:0 20px 40px -20px var(--c)}
.path h3{margin:6px 0}.path p{color:var(--mut);font-size:.92rem;margin:0}.path .tag{font-size:.75rem;padding:3px 9px;border-radius:99px;background:color-mix(in srgb,var(--c) 18%,transparent);color:var(--c);font-weight:700}
.path.soon{opacity:.6}
.toolbar{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:14px}#q{flex:1;min-width:240px;padding:13px 16px;border-radius:14px;border:1px solid var(--bd);background:var(--card);color:var(--tx);font:inherit}
.chips{display:flex;gap:6px;flex-wrap:wrap}.chips button{padding:8px 12px;border-radius:99px;border:1px solid var(--bd);background:var(--card);color:var(--tx);cursor:pointer;font:inherit;font-size:.85rem}.chips .on{background:var(--ac);color:#fff;border-color:var(--ac)}
.branchnav{display:flex;gap:8px;overflow-x:auto;padding:6px 0 14px;position:sticky;top:62px;z-index:10;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(8px)}
.branchnav a{white-space:nowrap;padding:6px 12px;border-radius:99px;border:1px solid var(--bd);text-decoration:none;font-size:.82rem;background:var(--card)}
.tree{position:relative;padding-left:34px}.tree:before{content:"";position:absolute;left:14px;top:0;bottom:0;width:3px;background:linear-gradient(var(--ac),var(--ac2),var(--ac3));border-radius:3px}
.branch{position:relative;margin-bottom:26px;scroll-margin-top:120px}
.bdot{position:absolute;left:-34px;top:14px;width:31px;height:31px;border-radius:50%;background:var(--c);display:grid;place-items:center;font-size:.9rem;box-shadow:0 0 0 5px var(--bg)}
.bhead{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:14px 18px;border-radius:18px;background:var(--card);border:1px solid var(--bd);cursor:pointer}
.bhead h3{margin:0;font-size:1.15rem}.bhead small{color:var(--mut)}.bar{flex:1;min-width:120px;height:8px;border-radius:9px;background:var(--bd);overflow:hidden}.bar i{display:block;height:100%;background:var(--c);transition:.4s}
.topics{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;margin-top:10px}.branch.closed .topics{display:none}
.topic{position:relative;padding:14px;border-radius:14px;background:var(--card);border:1px solid var(--bd);border-left:4px solid var(--c);cursor:pointer;transition:.2s;animation:in .4s both}
.topic:hover{transform:translateY(-3px);box-shadow:0 12px 26px -14px var(--c)}.topic b{display:block;font-size:.95rem}.topic p{margin:4px 0 0;color:var(--mut);font-size:.82rem}
.topic .lv{font-size:.7rem;color:var(--c);font-weight:700}.topic.done{background:color-mix(in srgb,var(--c) 14%,var(--card))}.topic.done:after{content:"✓";position:absolute;right:10px;top:8px;color:var(--c);font-weight:800}
.topic .vc{font-size:.72rem;color:var(--mut)}@keyframes in{from{opacity:0;transform:translateY(8px)}}
.drawer{position:fixed;inset:0;z-index:50;pointer-events:none}.dbg{position:absolute;inset:0;background:#0007;opacity:0;transition:.3s}
.drawer aside{position:absolute;right:0;top:0;bottom:0;width:min(720px,100%);background:var(--bg);overflow:auto;padding:26px;transform:translateX(100%);transition:.35s cubic-bezier(.2,.8,.2,1);border-left:1px solid var(--bd)}
.drawer.open{pointer-events:auto}.drawer.open .dbg{opacity:1}.drawer.open aside{transform:none}
.x{position:absolute;right:16px;top:16px;border:0;background:var(--card);color:var(--tx);border-radius:10px;width:36px;height:36px;cursor:pointer}
.note{padding:16px;border-radius:14px;background:color-mix(in srgb,var(--c) 12%,var(--card));border-left:4px solid var(--c);font-family:'Hind Siliguri';font-size:1.05rem}
.tabs{display:flex;gap:8px;margin:20px 0 12px}.tabs button{flex:1;padding:10px;border-radius:12px;border:1px solid var(--bd);background:var(--card);color:var(--tx);cursor:pointer;font:inherit;font-weight:700}.tabs .on{background:var(--c);color:#fff;border-color:var(--c)}
.player{aspect-ratio:16/9;border-radius:14px;overflow:hidden;background:#000}.player iframe{width:100%;height:100%;border:0}
.vlist{display:grid;gap:8px;margin-top:10px}.vlist button{display:flex;gap:10px;align-items:center;text-align:left;padding:8px;border-radius:12px;border:1px solid var(--bd);background:var(--card);color:var(--tx);cursor:pointer;font:inherit}.vlist img{width:110px;border-radius:8px}
.empty{padding:20px;border-radius:14px;border:2px dashed var(--bd);text-align:center;color:var(--mut)}.empty .btn{margin:6px}
.about .feat{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}.about .feat div{padding:22px;border-radius:18px;background:var(--card);border:1px solid var(--bd);font-size:1.8rem}.about h3{font-size:1.1rem;margin:8px 0 4px}.about p{font-size:.95rem;color:var(--mut);margin:0}
footer{text-align:center;padding:50px 16px;color:var(--mut)}
.admin table{width:100%;border-collapse:collapse;margin-top:16px}.admin td,.admin th{padding:8px;border-bottom:1px solid var(--bd);text-align:left}.card{padding:16px;border-radius:14px;background:var(--card);border:1px solid var(--bd);display:flex;gap:8px;flex-wrap:wrap}.card input,.card select,.card button{padding:10px;border-radius:10px;border:1px solid var(--bd);font:inherit}.warn{color:#dc2626}
@media(max-width:640px){.nav nav{display:none}.tree{padding-left:26px}.bdot{left:-28px;width:25px;height:25px}.tree:before{left:10px}}
#lang{border:1px solid var(--bd);background:var(--card);border-radius:10px;padding:6px 10px;cursor:pointer;color:var(--tx);font-weight:700}
.nav .jobs{padding:4px 10px;border-radius:9px;background:linear-gradient(135deg,var(--ac3),var(--ac));color:#fff!important}
.sub{color:var(--mut);margin-top:-10px}
.netbox{border-radius:20px;background:var(--card);border:1px solid var(--bd);overflow:auto}#net{width:100%;min-width:760px;display:block}
#net line{stroke:var(--bd);stroke-width:2}#net line.hot{stroke:var(--ac);stroke-width:3}#net g{cursor:pointer}#net g circle{transition:.2s}#net g:hover circle{r:34}#net text{fill:var(--tx);font-size:12px;text-anchor:middle;font-weight:600}
.lab{border-radius:20px;background:#0f1020;border:1px solid var(--bd);overflow:hidden}.labbar{display:flex;gap:10px;align-items:center;padding:10px;background:#1a1b33;flex-wrap:wrap}.labbar select{padding:9px;border-radius:10px;font:inherit}#labst{color:#a5b4fc;font-size:.85rem}
#code{width:100%;min-height:220px;background:#0f1020;color:#e0e7ff;border:0;padding:16px;font:14px/1.5 ui-monospace,Consolas,monospace;resize:vertical;tab-size:4}
#out{margin:0;padding:14px 16px;background:#070712;color:#86efac;font:13px ui-monospace,monospace;white-space:pre-wrap;min-height:60px;max-height:320px;overflow:auto;border-top:1px solid #222}#plot img{max-width:100%;background:#fff;display:block}
.float{position:fixed;right:18px;bottom:18px;width:min(380px,calc(100% - 32px));z-index:60;border-radius:16px;overflow:hidden;box-shadow:0 20px 50px -10px #000a;background:#000;display:none;animation:in .3s}
.float.on{display:block}.fbar{display:flex;justify-content:space-between;align-items:center;padding:6px 10px;background:linear-gradient(90deg,var(--ac),var(--ac2));color:#fff;cursor:move;font-size:.85rem;user-select:none}.fbar button{background:none;border:0;color:#fff;cursor:pointer;font-size:1rem}
.rel{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.rel a{padding:6px 12px;border-radius:99px;border:1px solid var(--bd);background:var(--card);text-decoration:none;font-size:.82rem;cursor:pointer}.rel a:hover{border-color:var(--c);color:var(--c)}
.dsec{margin-top:22px}.dsec h4{margin:0 0 6px}.flt{font-size:.8rem;margin-left:auto}
.logo{display:flex;align-items:center;gap:6px;font-size:1.25rem}.logo .lg{-webkit-text-fill-color:initial}
.domains{font-weight:600;color:var(--tx)!important;max-width:820px;margin:0 auto 6px}
.phases{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;counter-reset:ph}
.phase{position:relative;padding:18px;border-radius:18px;background:var(--card);border:1px solid var(--bd);cursor:pointer;transition:.2s;overflow:hidden}
.phase:hover{transform:translateY(-4px)}.phase h3{margin:4px 0;font-size:1rem}.phase .wk{font-size:1.6rem;font-weight:800;background:linear-gradient(90deg,var(--ac),var(--ac2));-webkit-background-clip:text;color:transparent}
.phase .ic{display:flex;gap:4px;flex-wrap:wrap;margin-top:6px;font-size:1.1rem}.phase .pb{position:absolute;left:0;bottom:0;height:4px;background:linear-gradient(90deg,var(--ac),var(--ac3))}
.phtag{margin:30px 0 12px;font-size:1.25rem;display:flex;align-items:center;gap:10px}.phtag:after{content:"";flex:1;height:2px;background:linear-gradient(90deg,var(--ac),transparent)}
.wu{margin:10px 0 0;padding:16px 18px;border-radius:16px;background:color-mix(in srgb,var(--c) 8%,var(--card));border:1px dashed color-mix(in srgb,var(--c) 50%,transparent);display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px 20px;font-size:.9rem}
.wu p{margin:0}.wu b{color:var(--c)}.wu .full{grid-column:1/-1}
.refs a{display:inline-block;margin:3px 4px 0 0;padding:4px 10px;border-radius:99px;background:var(--card);border:1px solid var(--bd);text-decoration:none;font-size:.8rem}.refs a:hover{border-color:var(--c)}
.note.en{margin-top:8px;background:var(--card)}