/* ===== v37 ===== */
/* the opening and Back: no jumps */
html.su-boot #main,html.su-hold #main{opacity:0!important;transition:none!important}
#main{transition:opacity .14s ease}
/* page translation is not allowed */
.ntr37{position:fixed;inset:0;z-index:100000;background:rgba(15,22,40,.82);display:grid;place-items:center;padding:16px}
.ntrc{background:#fff;border-radius:22px;max-width:420px;padding:24px;text-align:center;color:#1b2a44}.ntrc b{font-size:1.2rem}.ntrc .btn{margin-top:8px}
/* flat emoji */
.fe37 img{filter:none}
.ei svg{filter:drop-shadow(0 1px 1px rgba(27,42,68,.12))}

/* ---------- lesson icons that move ---------- */
@media (prefers-reduced-motion:no-preference){
 #main.lsn37 .secH h3 svg{animation:ic37b 3.4s ease-in-out infinite;transform-origin:50% 60%}
 #main.lsn37 .secH:nth-of-type(2n) h3 svg{animation-name:ic37w;animation-duration:2.8s}
 #main.lsn37 .e5>b svg,#main.lsn37 .hd svg{animation:ic37p 2.6s ease-in-out infinite}
 #main.lsn37 .scene3d .ei,#main.lsn37 .scene3d .fe{animation:ic37f 3s ease-in-out infinite}
 #main.lsn37 .scene3d i:nth-child(2n) .ei,#main.lsn37 .scene3d i:nth-child(2n) .fe{animation-delay:-1.5s}
 #main.lsn37 .lbanner svg [fill="#ffffff"],#main.lsn37 .orbs b{animation:ic37f 4s ease-in-out infinite}
 #main.lsn37 .orbs b:nth-child(2){animation-delay:-1.3s}#main.lsn37 .orbs b:nth-child(3){animation-delay:-2.6s}
 #main.lsn37 .pill.ok svg{animation:ic37p 1.8s ease-in-out infinite}
}
@keyframes ic37b{0%,100%{transform:translateY(0)}50%{transform:translateY(-3px)}}
@keyframes ic37w{0%,100%{transform:rotate(0)}25%{transform:rotate(-9deg)}75%{transform:rotate(9deg)}}
@keyframes ic37p{0%,100%{transform:scale(1)}50%{transform:scale(1.14)}}
@keyframes ic37f{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}

/* ---------- designed backgrounds ---------- */
.scn{position:relative;display:flex;flex-direction:column;border-radius:18px;overflow:hidden;color:var(--ink);margin:8px 0;background-size:auto;isolation:isolate}
.scn-top,.scn-bot{line-height:0;position:relative;z-index:1}.scn-top svg,.scn-bot svg{width:100%;height:auto;display:block}
.scn-txt{position:relative;z-index:2;padding:18px 22px;text-align:center;display:flex;align-items:center;justify-content:center;min-height:90px}
.scn-txt p{margin:0;font-weight:800;line-height:1.3;word-break:break-word;color:var(--ink);text-wrap:balance}
.scn-txt.t-s p{font-size:1.65rem}.scn-txt.t-m p{font-size:1.3rem}.scn-txt.t-l p{font-size:1.05rem;font-weight:700}
.scn-side{position:absolute;top:0;bottom:0;z-index:0}
.scn-s1 .scn-txt,.scn-s6 .scn-txt,.scn-s3 .scn-txt,.scn-s4 .scn-txt,.scn-s7 .scn-txt{text-shadow:0 2px 10px rgba(0,0,0,.35)}
.scn-s6 .scn-txt{padding-left:56px}.scn-s7 .scn-txt{padding-left:64px}
.scn-s4 .scn-top{height:0}.scn-s4 .scn-top svg{position:absolute;top:0;right:0;width:46%}
.scn-s4 .scn-txt{padding-top:70px;padding-bottom:36px}
.scn-s5 .scn-txt{padding-top:34px}.scn-s5 .scn-txt p,.scn-s12 .scn-txt p{font-family:Georgia,"Times New Roman",serif;font-weight:700}
.scn-s12 .scn-txt{padding-top:30px}.scn-s14 .scn-txt,.scn-s15 .scn-txt{padding-top:30px}
.scn-s14,.scn-s15{border:1px solid var(--l-line,#e6eaf2)}
.scn.in-pad{padding:18px}.in-pad .scn-txt{background:#ead5aa;border-radius:12px;margin-top:22px;padding:28px 20px 24px;box-shadow:0 6px 14px rgba(80,50,20,.25)}
.in-pad .scn-txt::before{content:"";position:absolute;left:14px;right:14px;top:-12px;height:22px;background:repeating-linear-gradient(90deg,transparent 0 10px,#1f1f1f 10px 13px,transparent 13px 26px);border-radius:3px}
.in-pad .scn-txt p{font-family:"Segoe Print","Comic Sans MS","Bradley Hand",cursive;font-weight:700}
.scn.in-frame9{padding:20px}.in-frame9 .scn-txt{border:3px solid #fff;box-shadow:8px 8px 0 rgba(0,0,0,.13);padding:34px 26px;min-height:120px}
.in-frame9 .scn-txt::before,.in-frame9 .scn-txt::after{position:absolute;font:900 64px/1 Georgia,serif;color:#48b0a8;-webkit-text-stroke:3px #fff;background:#48b0a8;padding:0 4px}
.in-frame9 .scn-txt::before{content:"”";top:-22px;right:12px}.in-frame9 .scn-txt::after{content:"“";bottom:-38px;left:12px}
.scn.in-frame10{padding:22px}.in-frame10 .scn-txt{border:2.5px solid #111;padding:34px 26px;min-height:120px}
.in-frame10 .scn-txt::before,.in-frame10 .scn-txt::after{position:absolute;font:900 64px/1 Georgia,serif;color:#111;background:#ffde00;padding:0 4px}
.in-frame10 .scn-txt::before{content:"“";top:-24px;left:-6px}.in-frame10 .scn-txt::after{content:"”";bottom:-44px;right:-6px}
.scn.in-tape{padding:26px 22px}.in-tape .scn-txt{background:#c9dde8;box-shadow:0 4px 10px rgba(20,40,60,.18);padding:30px 22px;min-height:110px}
.in-tape .scn-txt::before,.in-tape .scn-txt::after{content:"";position:absolute;width:74px;height:24px;background:rgba(255,255,255,.75);border-radius:2px}
.in-tape .scn-txt::before{top:-10px;right:-18px;transform:rotate(28deg)}.in-tape .scn-txt::after{bottom:-10px;left:-18px;transform:rotate(28deg)}
.scn.in-bubble{padding:16px 16px 0}.in-bubble .scn-txt{background:#fbfaf7;border-radius:46% 54% 48% 52%/52% 48% 52% 48%;padding:34px 30px;min-height:120px;box-shadow:0 2px 0 #fff inset,0 3px 8px rgba(0,0,0,.08)}
.in-bubble .scn-txt::after{content:"";position:absolute;bottom:-16px;left:52%;border:14px solid transparent;border-top:22px solid #fbfaf7;border-bottom:0}
.in-bubble .scn-bot{margin-top:14px}
.scn-u{background-size:cover!important;background-position:center!important;min-height:160px;justify-content:center}
.scn-u .scn-txt{margin:22px;border-radius:14px}.scn-u.box-dark .scn-txt{background:rgba(10,15,30,.55)}.scn-u.box-light .scn-txt{background:rgba(255,255,255,.75)}
.scn-u.box-none .scn-txt p{text-shadow:0 2px 12px rgba(0,0,0,.4)}
/* composer */
.cop37{display:flex;align-items:center;gap:10px;width:100%;text-align:left;font:inherit;color:var(--l-mut,#6b7a92);padding:12px 14px;cursor:pointer;border-radius:18px}
.cop37 .av{width:38px;height:38px}.cop37 .copb{display:inline-flex;align-items:center;gap:6px;background:var(--l-blue,#2a63e8);color:#fff;font-weight:700;font-size:.85rem;padding:8px 14px;border-radius:999px}.cop37 .copb svg{width:16px;height:16px}
.comp,.lcomp{position:relative}.compx37{position:absolute;top:10px;right:10px;z-index:3}
.ctools37{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}
.ctools37 button{display:inline-flex;align-items:center;gap:5px;border:1px solid var(--l-line,#e6eaf2);background:#fff;border-radius:999px;padding:6px 11px;font:inherit;font-size:.82rem;font-weight:600;color:var(--l-ink,#1b2a44);cursor:pointer}
.ctools37 button svg{width:16px;height:16px}.ctools37 button.on{background:#eef3ff;border-color:var(--l-blue,#2a63e8);color:var(--l-blue,#2a63e8)}
.bgb.bgs37{position:relative;display:grid;place-items:center;background-size:cover!important;overflow:hidden}.bgb.bgs37 i{font-style:normal;font-weight:800;font-size:.8rem;text-shadow:0 1px 3px rgba(0,0,0,.25)}
.lcpv37{margin:6px 0 10px}.lcscn textarea{color:#1b2a44!important}
/* the three dots */
.pdots37{margin-left:4px;color:var(--l-mut,#6b7a92)}.pdots37 svg{width:20px;height:20px}
.h37{display:none!important}
.dm37{position:absolute;z-index:9500;min-width:200px;background:#fff;border:1px solid var(--l-line,#e6eaf2);border-radius:14px;box-shadow:0 14px 34px rgba(27,42,68,.18);padding:6px;opacity:0;transform:translateY(-4px) scale(.98);transform-origin:top right;transition:opacity .14s,transform .14s}
.dm37.in{opacity:1;transform:none}
.dm37 button{display:flex;align-items:center;gap:10px;width:100%;border:0;background:none;font:inherit;font-weight:600;color:var(--l-ink,#1b2a44);padding:10px 12px;border-radius:10px;cursor:pointer;text-align:left}
.dm37 button:hover{background:#f3f6fb}.dm37 button svg{width:18px;height:18px}.dm37 button.dang{color:#e5392b}
article.gone37{opacity:.3;transition:opacity .2s}
/* comments open with a tiny button */
article.post .ci{display:none!important}article.post.ci37 .ci{display:flex!important}
.cmb37 svg{width:17px;height:17px}.cmb37 span{font-size:.78rem;margin-left:2px}
.tl37 span{display:none}
.cm37.sending{opacity:.6}
.pa .pab span{font-size:.78rem}

/* ---------- articles in a blog style ---------- */
.blhead{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.blfeat{display:block;width:100%;border:0;padding:0;background:#fff;border-radius:22px;overflow:hidden;text-align:left;font:inherit;color:var(--l-ink,#1b2a44);box-shadow:var(--l-sh);cursor:pointer;margin-bottom:16px}
.blfeat .blcov{display:block;aspect-ratio:16/8;background:#eef2f9;overflow:hidden}.blfeat .blcov img,.blfeat .blcov svg{width:100%;height:100%;object-fit:cover;display:block}
.blib{display:block;padding:14px 16px 16px}.blib small{display:block;color:var(--l-blue,#2a63e8);font-weight:800;font-size:.72rem;letter-spacing:.06em;text-transform:uppercase}
.blib b{display:block;font-family:Georgia,"Times New Roman",serif;font-size:1.35rem;line-height:1.25;margin:6px 0}
.blib em{display:block;font-style:normal;color:var(--l-mut,#6b7a92);line-height:1.45;font-size:.95rem}.blib i{display:block;font-style:normal;color:#9aa5b6;font-size:.8rem;margin-top:8px}
.blgrid{display:grid;grid-template-columns:1fr;gap:12px}
.blc{display:grid;grid-template-columns:110px 1fr;border:0;padding:0;background:#fff;border-radius:18px;overflow:hidden;text-align:left;font:inherit;color:var(--l-ink,#1b2a44);box-shadow:var(--l-sh);cursor:pointer}
.blc .blcov{display:block;height:100%;min-height:110px;background:#eef2f9;overflow:hidden}.blc .blcov img,.blc .blcov svg{width:100%;height:100%;object-fit:cover;display:block}
.blc .blib b{font-size:1.05rem}.blc .blib em{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:.86rem}
@media(min-width:720px){.blgrid{grid-template-columns:1fr 1fr}}
.blog37{max-width:720px;margin:10px auto 30px;background:#fff;border-radius:22px;overflow:hidden;box-shadow:var(--l-sh);color:#1f2937}
.blhero{width:100%;max-height:380px;object-fit:cover;display:block}
.blog37 header{padding:22px 22px 6px}.blkick{color:var(--l-blue,#2a63e8);font-weight:800;font-size:.72rem;letter-spacing:.1em}
.blog37 h1{font-family:Georgia,"Times New Roman",serif;font-size:2rem;line-height:1.15;margin:8px 0 10px;color:#111827;letter-spacing:-.01em}
.bldek{font-size:1.15rem;line-height:1.5;color:#4b5563;margin:0 0 14px}
.blby{display:flex;align-items:center;gap:10px;padding:12px 0;border-top:1px solid #eef0f4;border-bottom:1px solid #eef0f4}
.blby .av{width:40px;height:40px}.blby b{display:block}.blby small{color:#6b7280}
.blbody{padding:8px 22px 26px;font-family:Georgia,"Times New Roman",serif;font-size:1.12rem;line-height:1.75}
.blbody p{margin:0 0 1.1em}.blbody p.lead1::first-letter{float:left;font-size:3.4em;line-height:.86;font-weight:700;margin:.08em .1em 0 0;color:var(--l-blue,#2a63e8)}
.blbody p.lead1{font-size:1.18em}
.blbody h2{font-family:"Segoe UI",system-ui,sans-serif;font-size:1.35rem;margin:1.5em 0 .5em;color:#111827;padding-left:12px;border-left:4px solid var(--l-blue,#2a63e8)}
.blbody blockquote{margin:1.4em 0;padding:4px 0 4px 18px;border-left:4px solid #F2A900;font-style:italic;font-size:1.25rem;color:#374151}
.blbody ul{margin:0 0 1.1em;padding-left:1.3em}.blbody li{margin:.3em 0}
.blfig{margin:1.4em -22px}.blfig img{width:100%;display:block}.blfig figcaption{font-family:"Segoe UI",system-ui,sans-serif;font-size:.85rem;color:#6b7280;text-align:center;padding:6px 22px}
.blpv{box-shadow:none;border:1px dashed #d8e2ef}
.artools{display:flex;gap:6px;flex-wrap:wrap;margin:6px 0}.fi.blt{font-family:Georgia,serif;font-size:1.3rem;font-weight:700}

/* ---------- books ---------- */
.collbar{margin:6px 0 4px}.coll37 h3 .ic{vertical-align:middle;opacity:.6}
.collpick{display:flex;flex-direction:column;gap:6px;margin:8px 0 14px}
.shelfrow{position:relative;padding-bottom:16px}
.shelfrow::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:10px;border-radius:4px;background:linear-gradient(#d9b98a,#b98f5c);box-shadow:0 4px 8px rgba(100,70,30,.25)}
.bkc{box-shadow:3px 4px 10px rgba(27,42,68,.2),inset 4px 0 0 rgba(0,0,0,.08);border-radius:3px 8px 8px 3px}
.bkq37{position:absolute;inset:0;z-index:20;background:rgba(15,22,40,.5);display:flex;align-items:flex-end;justify-content:center;opacity:0;transition:opacity .18s}
.bkq37.in{opacity:1}
.bkqc{width:min(560px,100%);max-height:88%;overflow:auto;background:#fff;border-radius:22px 22px 0 0;padding:18px 16px calc(16px + env(safe-area-inset-bottom));transform:translateY(20px);transition:transform .2s}
.bkq37.in .bkqc{transform:none}
.bkqk{display:inline-flex;align-items:center;gap:6px;color:var(--l-blue,#2a63e8);font-weight:800;font-size:.8rem;text-transform:uppercase;letter-spacing:.05em}.bkqk svg{width:16px;height:16px}
.bkqq{margin:12px 0}.bkqq>b{display:block;margin-bottom:8px;line-height:1.35}
.bkqo{display:block;width:100%;text-align:left;font:inherit;background:#f6f8fc;border:2px solid #e3e9f3;border-radius:12px;padding:10px 12px;margin:6px 0;cursor:pointer;line-height:1.4}
.bkqo.ok{border-color:#22b07d;background:#e9f9f2}.bkqo.bad{border-color:#e5392b;background:#fff1ef}.bkqr{margin:4px 0 0;font-weight:600;font-size:.9rem}
.bqm37 .bqit{border:1px solid #e6eaf2;border-radius:12px;padding:10px;margin:8px 0}.bqit ol{margin:6px 0 6px 18px;padding:0}.bqit li.ok{color:#13a672;font-weight:700}
.bqo{display:flex;align-items:center;gap:8px;margin:4px 0}.bqo .fi{flex:1;margin:0}
/* post backgrounds page */
.bglist{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}.bgit{background:#fff;border-radius:18px;padding:8px;box-shadow:var(--l-sh)}.bgit.off{opacity:.5}
.bgadd .row label{display:flex;align-items:center;gap:8px;font-size:.9rem}
.lcomp [hidden],.comp[hidden],.cop37[hidden],.lcpv37[hidden]{display:none!important}