/* ===== cheerful restyle (v8) ===== */
:root{--sky:#3aa0ff;--sun:#ffc93c;--coral:#ff6b6b;--mint:#2ec4b6;--grape:#8e6cff;--peach:#ffb385}
body{background:#fff8ec radial-gradient(circle at 10% 10%,rgba(255,201,60,.18) 0 60px,transparent 61px) ,radial-gradient(circle at 90% 30%,rgba(58,160,255,.12) 0 90px,transparent 91px);background-attachment:fixed}
.topbar{background:linear-gradient(90deg,#1d2b53,#3b4f8f 55%,#5b47c8);box-shadow:0 3px 12px rgba(29,43,83,.25)}
.tb{border-radius:999px}
.tb.nag{background:var(--sun);color:#1d2b53;border-color:var(--sun);font-weight:800}
.hero{background:linear-gradient(135deg,#2b59c3 0%,#5b47c8 45%,#ff6b6b 100%)!important;box-shadow:0 10px 30px rgba(91,71,200,.25)}
.hero .chip{border-radius:999px}
.nagbanner{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:16px 0 4px;padding:16px 18px;border-radius:22px;background:linear-gradient(135deg,#fff3c4,#ffe0ec);border:3px solid var(--sun);box-shadow:0 6px 18px rgba(255,201,60,.35);text-decoration:none;color:#1d2b53}
.nagbanner .nb-ic{font-size:44px;line-height:1}
.nagbanner b{font-size:clamp(20px,4.6vw,28px);font-family:'Secular One','Rubik',sans-serif;display:block}
.nagbanner span.t{flex:1;min-width:200px;font-size:16px}
.nagbanner .go{background:#1d2b53;color:#fff;border-radius:999px;padding:12px 20px;font-weight:800;font-size:18px;white-space:nowrap}
.nagbanner:hover{transform:translateY(-2px)}
.grp-h{display:flex;align-items:center;gap:10px;margin:26px 0 10px;font-family:'Secular One','Rubik',sans-serif;font-size:22px;color:#1d2b53}
.grp-h::after{content:"";flex:1;height:4px;border-radius:4px;background:var(--gc,#3aa0ff);opacity:.35}
.grid .card{border-radius:20px;border-top:7px solid var(--gc,#3aa0ff);box-shadow:0 6px 18px rgba(29,43,83,.08);transition:transform .15s, box-shadow .15s}
.grid .card:hover{transform:translateY(-3px);box-shadow:0 10px 26px rgba(29,43,83,.14)}
.card .new{display:inline-block;background:var(--coral);color:#fff;border-radius:999px;font-size:12px;font-weight:800;padding:2px 9px;margin-inline-start:6px}
.card .nagmini{background:#fff3c4;border:2px solid var(--sun)}
footer{background:linear-gradient(90deg,#fff3c4,#e6f3ff);border-radius:18px;margin-top:22px}

/* ===== nagish (LD track) ===== */
body.nagish{--nfs:1;--nsp:1}
body.nagish[data-nbg=cream] main{background:#fffaf0}
body.nagish[data-nbg=blue] main{background:#eaf4ff}
body.nagish[data-nbg=green] main{background:#eef9ef}
body.nagish[data-nbg=white] main{background:#fff}
.npage{font-family:'Assistant','Rubik',Arial,sans-serif;font-size:calc(19px*var(--nfs));line-height:calc(1.85*var(--nsp));text-align:right;max-width:860px;margin:0 auto;color:#1b2333;letter-spacing:.01em;word-spacing:.08em}
.npage b{color:#0f3d91}
.ntools{position:sticky;top:64px;z-index:15;display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-start;background:rgba(255,255,255,.92);backdrop-filter:blur(4px);padding:8px;border-radius:16px;box-shadow:0 2px 10px rgba(0,0,0,.08);margin-bottom:12px}
.ntools button{min-height:44px;min-width:48px;border-radius:12px;border:2px solid #cfd8ea;background:#fff;font-size:17px;font-weight:700;color:#1d2b53;padding:4px 10px}
.nhero{background:linear-gradient(135deg,#fff3c4,#ffe3ef 60%,#e3f0ff);border:3px solid var(--sun);border-radius:26px;padding:22px 18px;text-align:center;margin-bottom:8px}
.nbadge{font-size:56px;line-height:1}
.nhero h1{font-family:'Secular One','Rubik',sans-serif;font-size:calc(30px*var(--nfs));margin:6px 0;color:#1d2b53}
.nlead{font-size:1.15em;margin:4px 0 10px}
.nhow{list-style:none;padding:0;margin:0 auto 14px;max-width:560px;text-align:right}
.nhow li{background:#fff;border-radius:14px;padding:8px 14px;margin:6px 0;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.nchips,.nend{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:10px}
.nbtn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:52px;padding:10px 20px;border-radius:999px;background:#1d2b53;color:#fff!important;text-decoration:none;font-weight:800;font-size:1em;border:0;cursor:pointer}
.nbtn.big{background:linear-gradient(90deg,#ff6b6b,#ff9f43);font-size:1.1em}
.nbtn.ghost{background:#fff;color:#1d2b53!important;border:3px solid #1d2b53}
.nsec{font-family:'Secular One','Rubik',sans-serif;font-size:1.25em;margin:26px 0 10px;color:#1d2b53;border-inline-start:8px solid var(--gc,#3aa0ff);padding-inline-start:10px}
.ngrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.ncard{display:flex;flex-direction:column;gap:4px;background:#fff;border-radius:20px;padding:16px;text-decoration:none;color:#1b2333;border:3px solid var(--gc,#3aa0ff);box-shadow:0 5px 14px rgba(0,0,0,.07);min-height:150px}
.ncard .nem{font-size:38px}.ncard b{font-size:1.05em}
.nnum{font-size:.78em;color:#5b6273;font-weight:700}
.nsub{font-size:.85em;color:#3b4252}
.nprog{margin-top:auto;font-size:.85em;font-weight:700;color:#b06d00}
.ndl{display:grid;gap:8px}
.ndli{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;background:#fff;border-radius:14px;padding:10px 14px;box-shadow:0 1px 5px rgba(0,0,0,.06)}
.nlinks a,.mlink{display:inline-flex;align-items:center;min-height:44px;padding:6px 16px;margin:3px;border-radius:999px;background:#e8f1ff;color:#1d2b53;font-weight:800;text-decoration:none;border:2px solid #b9d3ff}
.nteacher{background:#fff;border-radius:16px;padding:10px 16px;margin:20px 0;border:2px dashed #b9c4dc;font-size:.9em}
.nteacher summary{font-weight:800;cursor:pointer;min-height:40px}
.nbread{font-size:.9em;margin:4px 0 10px}.nbread a{font-weight:700}
.nlhead{display:flex;gap:14px;align-items:center;background:linear-gradient(135deg,#e3f0ff,#fff3c4);border-radius:22px;padding:14px 16px}
.nlhead .nem{font-size:52px}.nlhead h1{margin:0;font-family:'Secular One','Rubik',sans-serif;font-size:calc(26px*var(--nfs));line-height:1.3;color:#1d2b53}
.nbar{height:12px;background:#e6e9f2;border-radius:99px;margin:12px 0;overflow:hidden}.nbar i{display:block;height:100%;background:linear-gradient(90deg,#2ec4b6,#ffc93c);border-radius:99px;transition:width .4s}
.nstep{background:#fff;border-radius:22px;padding:14px 16px;margin:16px 0;box-shadow:0 4px 14px rgba(0,0,0,.06)}
.nstep h2{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-family:'Secular One','Rubik',sans-serif;font-size:1.2em;margin:0 0 8px;color:#1d2b53}
.nsn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:#3aa0ff;color:#fff;font-size:.8em;flex:0 0 36px}
.ndone{color:#2e9d5b}
.nbig{font-size:1.15em;font-weight:700}
.nbefore{background:#fff6d9;border-radius:14px;padding:10px 14px;margin-top:8px}
.nchunk{border:2px solid #e4e9f5;border-radius:18px;padding:12px 14px;margin:12px 0;background:#fcfdff}
.nch-h{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.nch-h h3{margin:0;flex:1;font-size:1.08em;color:#1d2b53}.nci{font-size:32px}
.nline{margin:6px 0;padding-inline-start:12px;border-inline-start:4px solid #ffe08a}
.nword{display:flex;flex-direction:column;gap:2px;background:#e9fbf7;border:2px solid #2ec4b6;border-radius:14px;padding:8px 12px;margin-top:8px}
.say{min-height:44px;border-radius:999px;border:2px solid #b9d3ff;background:#eef5ff;color:#1d2b53;font-weight:800;font-size:.85em;padding:4px 12px}
.say.on{background:#ffc93c;border-color:#e0a32e}
.ntl{list-style:none;padding:0;margin:0;position:relative}
.ntl::before{content:"";position:absolute;right:52px;top:6px;bottom:6px;width:5px;background:#cfe2ff;border-radius:4px}
.ntl li{display:flex;gap:16px;align-items:center;margin:10px 0;position:relative}
.ntl .ny{flex:0 0 108px;text-align:center;background:#3aa0ff;color:#fff;font-weight:800;border-radius:999px;padding:4px 6px;z-index:1;font-size:.95em}
.nflip,.nm5{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px}
.nfc,.nm{position:relative;min-height:120px;border-radius:18px;border:3px solid #8e6cff;background:#f4f0ff;font-family:inherit;font-size:1em;color:#1b2333;padding:10px;cursor:pointer;line-height:1.5}
.nm{border-color:#ff9f43;background:#fff3e6;min-height:100px}
.nfc .f1,.nm .f1{display:flex;flex-direction:column;align-items:center;gap:4px;font-weight:800}
.nfc .f1 small{font-weight:400;font-size:.75em;color:#5b6273}.fe{font-size:34px}
.nfc .f2,.nm .f2{display:none}
.nfc.flipped,.nm.flipped{background:#fff;border-style:dashed}
.nfc.flipped .f1,.nm.flipped .f1{display:none}.nfc.flipped .f2,.nm.flipped .f2{display:block}
.nq{border:2px solid #e4e9f5;border-radius:16px;padding:10px 12px;margin:10px 0}
.nq p{margin:0 0 6px}
.nopts{display:flex;flex-wrap:wrap;gap:8px}.nopts.col{flex-direction:column}
.nopts button,.nord button{min-height:52px;border-radius:14px;border:3px solid #cfd8ea;background:#fff;font-family:inherit;font-size:1em;padding:8px 14px;text-align:right;color:#1b2333;cursor:pointer}
.nopts button.good,.nord button.good{border-color:#2e9d5b;background:#e6f7ec}
.nopts button.bad{border-color:#d1453b;background:#fdecea}
.nfb{min-height:1.4em;margin-top:6px;font-weight:600}
.nhint{color:#4a5468;font-size:.92em}
.nbank{display:flex;flex-wrap:wrap;gap:8px;padding:10px;border:3px dashed #ffc93c;border-radius:16px;background:#fffaf0;margin-bottom:10px}
.nw{min-height:48px;border-radius:999px;border:3px solid #e0a32e;background:#fff;font-family:inherit;font-size:1em;font-weight:800;padding:4px 16px;cursor:pointer;color:#1b2333}
.nw.sel{background:#ffc93c;transform:scale(1.06)}.nw.used{opacity:.35;text-decoration:line-through}
.nsent{margin:10px 0}
.nblank{min-width:96px;min-height:44px;border:0;border-bottom:4px solid #3aa0ff;background:#eef5ff;border-radius:10px 10px 0 0;font-family:inherit;font-size:1em;font-weight:800;margin:0 4px;cursor:pointer;color:#1b2333}
.nblank.good{background:#e6f7ec;border-color:#2e9d5b}
.shake{animation:shk .45s}@keyframes shk{0%,100%{transform:translateX(0)}25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}
.nord{display:flex;flex-direction:column;gap:8px}
.onum{display:inline-flex;width:30px;height:30px;border-radius:50%;background:#2e9d5b;color:#fff;align-items:center;justify-content:center;margin-inline-end:8px;font-weight:800}
.nreset{font-size:.9em!important;min-height:44px!important}
.nopen{margin:12px 0}
.nstarter{color:#1e6f5c}
.nopen textarea{width:100%;font-family:inherit;font-size:1em;line-height:1.8;border:3px solid #cfd8ea;border-radius:14px;padding:10px;background:repeating-linear-gradient(#fff 0 calc(1.8em - 1px),#dfe6f3 calc(1.8em - 1px) 1.8em)}
.nsaved{color:#5b6273}
.nsum{background:#fff6d9;border-radius:16px;padding:10px 14px}
.nsum p{margin:4px 0}
.nh3{margin:14px 0 6px;color:#1d2b53}
.nchk label{display:flex;align-items:center;gap:10px;min-height:48px;background:#f3f8ff;border-radius:12px;padding:6px 12px;margin:6px 0;cursor:pointer}
.nchk input{width:26px;height:26px;accent-color:#2e9d5b;flex:0 0 26px}
/* deck + materials */
.deckp h1,.mats h1{font-family:'Secular One','Rubik',sans-serif;color:#1d2b53}
.dcred{font-weight:700;color:#5b47c8}
.dview{position:relative;background:#111;border-radius:18px;overflow:hidden;box-shadow:0 8px 24px rgba(0,0,0,.2)}
.dview img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:contain;background:#111}
.dview:fullscreen img{height:calc(100vh - 64px)}
.dctrl{display:flex;justify-content:center;align-items:center;gap:12px;padding:8px;background:#1d2b53;color:#fff}
.dctrl button{min-width:56px;min-height:48px;border-radius:999px;border:0;background:#ffc93c;color:#1d2b53;font-size:22px;font-weight:800;cursor:pointer}
.dctrl button:disabled{opacity:.35}
.dthumbs{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}
.dthumbs button{min-width:44px;min-height:44px;border-radius:12px;border:2px solid #cfd8ea;background:#fff;font-weight:800;cursor:pointer}
.dthumbs button.on{background:#3aa0ff;color:#fff;border-color:#3aa0ff}
.dnote{background:#fff6d9;border-radius:14px;padding:8px 12px;font-size:15px}
.dsum{font-family:'Assistant','Rubik',Arial,sans-serif;font-size:19px;line-height:1.85;background:#fff;border-radius:22px;padding:14px 16px;margin-top:16px;border:3px solid #ffc93c}
.dsum h2{font-family:'Secular One','Rubik',sans-serif;color:#1d2b53}
.dsum .ntools{position:static}
.mset{background:#fff;border-radius:22px;padding:14px 16px;margin:16px 0;box-shadow:0 4px 14px rgba(0,0,0,.06)}
.mset h2{font-family:'Secular One','Rubik',sans-serif;color:#1d2b53;margin:0 0 8px}
.mgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px}
.mcard{display:flex;gap:12px;align-items:flex-start;border:2px solid #e4e9f5;border-radius:16px;padding:12px;background:#fcfdff}
.mcard small{display:block;color:#4a5468}.mem{font-size:34px}
.mnote{background:#fff6d9;border-radius:12px;padding:6px 12px}
.mcred{font-size:14px;color:#4a5468;font-weight:700}
@media (max-width:520px){.ntl::before{right:44px}.ntl .ny{flex-basis:92px}.ntools{position:static}.nlhead .nem{font-size:40px}}
@media (max-width:520px){.topbar a.tb[href="#/downloads"]{display:none}.topbar .tb{padding:6px 5px!important}.topbar img.rl-top{width:46px!important;height:46px!important;flex-basis:46px!important;margin-inline-start:2px}}
@media print{.ntools,.say,.nbtn{display:none!important}}