:root{--bg:#fff6e8;--ink:#3b2516;--or:#c85a2e;--rd:#b5501f;--bl:#1e3a6e;--gr:#2f8f6a;--yl:#f2b63a;--pu:#6b4cb0;--pk:#d6457a;--card:#fff;--r:18px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:Heebo,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:var(--bl)}
:focus-visible{outline:3px solid var(--pu);outline-offset:2px}
.top{position:relative;z-index:20;display:flex;align-items:center;gap:10px;padding:8px 12px;background:#fffdf8;box-shadow:0 2px 10px rgba(59,37,22,.08)}
.top .logo{width:46px;height:46px;border-radius:50%;flex:none;background:#fff;object-fit:cover;border:2px solid #f6e3c4}
.top .ttl{font-family:Rubik,Heebo,sans-serif;font-weight:800;color:var(--rd);font-size:1.05rem;line-height:1.2;text-decoration:none;flex:1;min-width:0}
.top .ttl small{display:block;font-weight:500;color:#8a6e5e;font-size:.78rem}
.top nav{display:flex;gap:6px}
.top nav a{font-size:1.25rem;text-decoration:none;width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:#fff1dc}
.top nav a[aria-current=page]{background:var(--yl)}
main{max-width:860px;margin:0 auto;padding:12px 14px 30px}
h1,h2,h3{font-family:Rubik,Heebo,sans-serif;line-height:1.25}
h1{font-size:1.9rem;font-weight:800;color:var(--rd);margin:14px 0 6px}
h2{font-size:1.45rem;margin:26px 0 10px;color:var(--bl)}
h3{font-size:1.15rem;margin:0 0 6px}
p{margin:.4em 0 .8em;font-size:1.05rem}
.hero{position:relative;border-radius:22px;overflow:hidden;box-shadow:0 8px 24px rgba(59,37,22,.15)}
.hero img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
.date{display:inline-block;background:#fff;border:2px solid var(--yl);border-radius:999px;padding:6px 14px;font-weight:700;color:var(--bl);margin:6px 0}
.tracks{display:grid;gap:14px;margin:18px 0}
@media(min-width:700px){.tracks{grid-template-columns:1fr 1fr}}
.track{display:block;text-decoration:none;color:#fff;border-radius:24px;overflow:hidden;box-shadow:0 8px 22px rgba(0,0,0,.15);transition:transform .15s}
.track:active{transform:scale(.98)}
.track img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
.track .tx{padding:14px 16px 16px}
.track b{display:block;font-family:Rubik;font-size:1.6rem;font-weight:800}
.track span{font-size:1rem;opacity:.95}
.t1{background:linear-gradient(135deg,#e2693a,#d6457a)}
.t2{background:linear-gradient(135deg,#1e3a6e,#2f8f6a)}
.facts{display:grid;gap:10px;grid-template-columns:1fr 1fr;margin:10px 0}
.fact{background:#fff;border-radius:16px;padding:12px;box-shadow:0 2px 8px rgba(0,0,0,.06);font-size:.98rem}
.fact .em{font-size:1.7rem;display:block}
.btn{display:block;width:100%;text-align:center;text-decoration:none;font-family:Rubik,Heebo,sans-serif;font-weight:800;font-size:1.15rem;padding:15px 14px;border-radius:16px;margin:10px 0;color:#fff;border:0;cursor:pointer;box-shadow:0 4px 12px rgba(0,0,0,.12);background:var(--or)}
.btn.sm{display:inline-block;width:auto;font-size:1rem;padding:10px 16px;margin:4px}
.btn.ghost{background:#fff;color:var(--ink);border:2px solid #ead6b8;box-shadow:none}
.b-red{background:#d92d2d}.b-gr{background:var(--gr)}.b-bl{background:var(--bl)}.b-pu{background:var(--pu)}.b-yl{background:var(--yl);color:var(--ink)}.b-pk{background:var(--pk)}
.acts{display:grid;gap:12px;grid-template-columns:1fr 1fr}
@media(min-width:700px){.acts{grid-template-columns:repeat(3,1fr)}}
.act{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;min-height:128px;padding:14px 10px;border-radius:20px;color:#fff;text-decoration:none;font-family:Rubik;font-weight:800;font-size:1.1rem;box-shadow:0 6px 16px rgba(0,0,0,.13)}
.act .em{font-size:2.3rem;line-height:1.1;margin-bottom:6px}
.act small{font-family:Heebo;font-weight:400;font-size:.85rem;opacity:.95}
.vids{display:grid;gap:16px}
@media(min-width:760px){.vids{grid-template-columns:1fr 1fr}}
.vid{background:#fff;border-radius:20px;overflow:hidden;box-shadow:0 4px 14px rgba(0,0,0,.08)}
.vid .frame{position:relative;aspect-ratio:16/9;background:#222;border:0;padding:0;width:100%;cursor:pointer;display:block}
.vid .frame img{width:100%;height:100%;object-fit:cover;opacity:.92}
.vid .frame .play{position:absolute;inset:0;display:grid;place-items:center;font-size:3.2rem;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.6)}
.vid iframe{width:100%;aspect-ratio:16/9;border:0;display:block}
.vid .meta{padding:10px 14px 14px}
.vid .meta h3{font-size:1.08rem}
.vid .cr{font-size:.9rem;color:#6d5546}
.vid .why{font-size:.95rem;margin:4px 0}
.vid .btn{margin:8px 0 0}
.box{background:#fff;border-radius:20px;padding:16px;box-shadow:0 4px 14px rgba(0,0,0,.07);margin:14px 0}
.box.tint{background:#fff1dc}
.back{display:inline-flex;align-items:center;gap:6px;text-decoration:none;font-weight:700;background:#fff;border-radius:999px;padding:8px 14px;margin:6px 0;box-shadow:0 2px 6px rgba(0,0,0,.08);color:var(--ink)}
.status{font-weight:700;min-height:1.6em;margin:8px 0;font-size:1.05rem}
.ok{color:#1d7a4f}.no{color:#b3261e}
/* matching */
.mgrid{display:grid;grid-template-columns:1fr 1.35fr;gap:10px}
.mcol{display:flex;flex-direction:column;gap:8px}
.chip{border:3px solid transparent;background:#fff;border-radius:14px;padding:12px 10px;font-size:1rem;text-align:center;cursor:pointer;box-shadow:0 2px 6px rgba(0,0,0,.08);font-family:inherit;color:var(--ink);min-height:54px}
.chip.term{font-family:Rubik;font-weight:800;font-size:1.12rem;background:#fff7ea}
.chip.sel{border-color:var(--pu);background:#f1ebff}
.chip.done{background:#dff4e8;border-color:#7cc9a0;cursor:default;opacity:.8}
.chip.bad{animation:shake .35s;border-color:#e46a5e}
@keyframes shake{25%{transform:translateX(5px)}75%{transform:translateX(-5px)}}
/* order */
.olist{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}
.oitem{display:flex;align-items:center;gap:8px;background:#fff;border-radius:14px;padding:8px;box-shadow:0 2px 6px rgba(0,0,0,.08)}
.oitem .n{flex:none;width:34px;height:34px;border-radius:50%;background:var(--yl);display:grid;place-items:center;font-weight:800}
.oitem .tx{flex:1;font-size:1rem}
.oitem .ar{display:flex;flex-direction:column;gap:4px}
.oitem button{width:44px;height:36px;border-radius:10px;border:0;background:#fff1dc;font-size:1.1rem;cursor:pointer}
.oitem.right{background:#dff4e8}.oitem.wrong{background:#fde4e1}
/* umbrella */
.umb-wrap{display:grid;gap:12px}
@media(min-width:760px){.umb-wrap{grid-template-columns:1.1fr 1fr;align-items:start}}
.umb{background:linear-gradient(#cfe8ff,#fff6e8);border-radius:22px;padding:10px}
.umb svg{width:100%;height:auto;display:block}
.umb path.seg{cursor:pointer;stroke:#fff;stroke-width:2}
.pal{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0}
.pal button{width:44px;height:44px;border-radius:50%;border:3px solid #fff;box-shadow:0 2px 6px rgba(0,0,0,.2);cursor:pointer}
.pal button.on{outline:3px solid var(--ink)}
.stk{display:flex;flex-wrap:wrap;gap:6px}
.stk button{font-size:1.6rem;width:50px;height:50px;border-radius:14px;border:0;background:#fff;box-shadow:0 2px 6px rgba(0,0,0,.1);cursor:pointer}
label{font-weight:700;display:block;margin:10px 0 4px}
input[type=text],textarea{width:100%;font:inherit;font-size:1.05rem;padding:12px;border-radius:14px;border:2px solid #ead6b8;background:#fff;color:var(--ink)}
textarea{min-height:110px;resize:vertical}
.wish{font-family:Rubik;font-weight:800;color:var(--bl);text-align:center;font-size:1.2rem;min-height:1.5em}
/* quiz */
.q{font-family:Rubik;font-weight:800;font-size:1.2rem;margin:6px 0 10px}
.opts{display:flex;flex-direction:column;gap:8px}
.opt{text-align:right;background:#fff;border:3px solid #ead6b8;border-radius:14px;padding:13px;font:inherit;font-size:1.05rem;cursor:pointer;color:var(--ink)}
.opt.right{background:#dff4e8;border-color:#3aa06c}.opt.wrong{background:#fde4e1;border-color:#e46a5e}
.fb{margin:10px 0;padding:10px 12px;border-radius:12px;background:#fff1dc;font-size:1rem}
.prog{height:10px;background:#f1dfc4;border-radius:99px;overflow:hidden;margin:6px 0 12px}
.prog i{display:block;height:100%;background:linear-gradient(90deg,var(--yl),var(--or));border-radius:99px;transition:width .3s}
.score{font-size:3rem;text-align:center}
/* memory */
.mem{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
@media(min-width:600px){.mem{grid-template-columns:repeat(4,1fr)}}
.card{aspect-ratio:3/4;border:0;border-radius:14px;cursor:pointer;font:inherit;position:relative;background:linear-gradient(135deg,var(--or),var(--pk));color:#fff;font-size:1.9rem;box-shadow:0 3px 8px rgba(0,0,0,.15);padding:4px}
.card .face{display:none;font-size:1rem;font-weight:700;color:var(--ink);line-height:1.25}
.card .face .e{font-size:2.2rem;display:block}
.card.open,.card.got{background:#fff}
.card.open .face,.card.got .face{display:block}
.card.open .bk,.card.got .bk{display:none}
.card.got{background:#dff4e8}
/* sources */
.src{background:#fffaf0;border-right:6px solid var(--yl);border-radius:12px;padding:12px 14px;margin:10px 0;font-family:"Frank Ruhl Libre",David,serif;font-size:1.15rem;line-height:1.9}
.src cite{display:block;font-family:Heebo;font-style:normal;font-size:.9rem;color:#6d5546;margin-top:4px}
.gq{margin:8px 0;padding-right:18px}
.gq li{margin:6px 0}
/* timeline */
.route{background:#fff;border-radius:20px;padding:8px;box-shadow:0 4px 14px rgba(0,0,0,.07)}
.route svg{width:100%;height:auto;display:block}
.tl{list-style:none;padding:0;margin:12px 0;position:relative}
.tl:before{content:"";position:absolute;right:21px;top:0;bottom:0;width:4px;background:#ead6b8;border-radius:4px}
.tl li{position:relative;padding-right:52px;margin:0 0 10px}
.tl .dot{position:absolute;right:8px;top:12px;width:30px;height:30px;border-radius:50%;background:#fff;border:4px solid var(--yl);display:grid;place-items:center;font-size:.9rem}
.tl button.ev{width:100%;text-align:right;background:#fff;border:2px solid #ead6b8;border-radius:14px;padding:10px 12px;font:inherit;cursor:pointer;color:var(--ink)}
.tl li.on button.ev{border-color:var(--bl);background:#eef3ff}
.tl li.on .dot{background:var(--bl);border-color:var(--bl);color:#fff}
.tl .yr{font-family:Rubik;font-weight:800;color:var(--rd);display:block}
.tl .more{display:none;margin-top:6px;font-size:.98rem}
.tl li.on .more{display:block}
/* debate */
.dcard{min-height:200px;border-radius:22px;padding:20px;color:#fff;display:flex;flex-direction:column;justify-content:center;text-align:center;font-family:Rubik;font-size:1.3rem;font-weight:800;box-shadow:0 8px 20px rgba(0,0,0,.15);background:linear-gradient(135deg,var(--bl),var(--pu))}
.dcard small{display:block;font-family:Heebo;font-weight:400;font-size:.95rem;margin-top:10px;opacity:.95}
.roles{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin:10px 0}
.roles span{background:#fff;border-radius:999px;padding:6px 12px;font-weight:700;box-shadow:0 2px 6px rgba(0,0,0,.08)}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0}
.chips button{border:2px solid #ead6b8;background:#fff;border-radius:999px;padding:8px 12px;font:inherit;cursor:pointer;color:var(--ink)}
.chips button.on{background:var(--yl);border-color:var(--yl)}
/* teacher */
.flow{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden;font-size:.98rem}
.flow td{padding:10px;border-bottom:1px solid #f1e3cc;vertical-align:top}
.flow td:first-child{white-space:nowrap;font-weight:800;color:var(--rd);width:74px}
details{background:#fff;border-radius:14px;padding:10px 14px;margin:8px 0;box-shadow:0 2px 6px rgba(0,0,0,.06)}
summary{font-weight:800;cursor:pointer;font-family:Rubik}
.small{font-size:.9rem;color:#6d5546}
footer{text-align:center;padding:22px 14px 30px;color:#8a6e5e;font-weight:700}
.ext{border:3px dashed var(--pu);background:#f6f1ff}
.pill{display:inline-block;background:var(--yl);color:var(--ink);border-radius:999px;padding:2px 10px;font-size:.85rem;font-weight:800}
.confetti{position:fixed;inset:0;pointer-events:none;z-index:50;overflow:hidden}
.confetti i{position:absolute;top:-20px;width:10px;height:14px;border-radius:3px;animation:fall 1.6s linear forwards}
@keyframes fall{to{transform:translateY(110vh) rotate(540deg)}}
@media (prefers-reduced-motion:reduce){.confetti{display:none}.chip.bad{animation:none}}
.umb path.seg{pointer-events:none}.umb svg{cursor:pointer;touch-action:manipulation}.umb svg line,.umb svg text,.umb svg circle,.umb svg rect{pointer-events:none}