:root{--ink:#442817;--brown:#754622;--cream:#fff8e8;--yellow:#fff0bd;--gold:#ffc83d;--muted:#8a6c50;--line:#ead8ae;--white:#fffdf7;--mint:#e7f2eb;--coral:#d96342}*{box-sizing:border-box}body{margin:0;background:linear-gradient(145deg,#fffaf0,#f8edcf);color:var(--ink);font-family:"Noto Sans SC",sans-serif}.live-shell{max-width:1180px;margin:auto;padding:0 34px 48px}.live-topbar{height:92px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-size:20px;font-weight:700}.brand img{width:43px;height:43px;object-fit:contain}.brand em{font:500 10px "DM Mono",monospace;letter-spacing:.14em;color:#a07342}.session-pill{border:1px solid #d7b870;border-radius:999px;background:#fff8dd;padding:8px 13px;font-size:12px;font-weight:700;color:#754622}.card{background:rgba(255,253,247,.93);border:1px solid var(--line);border-radius:24px;box-shadow:0 16px 45px 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/* Focused teacher dashboard: task on the left, only time and submissions on the right. */
.teacher-live{grid-template-columns:1.14fr .86fr}.live-main{min-height:500px;display:flex;flex-direction:column;justify-content:center;background:linear-gradient(140deg,rgba(255,253,247,.98),rgba(255,249,232,.92))}.live-question{font-size:clamp(72px,9vw,114px);line-height:1.12;letter-spacing:-.05em;margin:28px 0}.live-main .hint{text-align:center;margin:0}.live-status{position:relative;min-height:500px;overflow:hidden;display:flex;flex-direction:column;background:linear-gradient(165deg,#fff7da,#fffdf7 57%,#ffedaf)}.live-countdown{display:flex;align-items:baseline;gap:7px;margin:18px 0 30px}.live-countdown b{font:700 clamp(78px,11vw,126px)/.9 Fraunces,serif;letter-spacing:-.07em;color:#a14f31}.live-countdown small{font:700 17px "Noto Sans SC",sans-serif;color:#a06c4e}.live-submission{display:flex;align-items:end;justify-content:space-between;padding:17px 18px 14px;border-radius:17px;background:rgba(255,253,247,.78);border:1px solid rgba(224,194,117,.72)}.live-submission>span{font-size:13px;font-weight:700;color:#8a6c50}.live-submission div{display:flex;align-items:baseline;gap:5px;color:#754622}.live-submission b{font:700 39px/.8 Fraunces,serif}.live-submission div span{font-size:13px;font-weight:700;color:#8a6c50}.live-submission-progress{height:8px;margin:11px 4px 0}.progress i{transition:width .35s ease}.live-bana-mini{position:absolute;right:7px;bottom:4px;width:174px;height:158px;display:grid;place-items:center}.live-bana-mini img{position:relative;z-index:2;width:165px;height:145px;object-fit:contain;filter:drop-shadow(0 13px 11px rgba(84,52,15,.17));transform-origin:50% 90%;animation:banaCheer 1.05s cubic-bezier(.32,.84,.35,1) infinite}.mini-bana-glow{position:absolute;z-index:0;width:126px;height:126px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.96) 0 20%,rgba(66,203,205,.42) 45%,rgba(66,203,205,0) 72%);animation:cheerGlow 1.05s ease-in-out infinite}.bana-cheer{position:absolute;z-index:3;top:-5px;right:-2px;border-radius:999px;background:#fffdf1;color:#a14f31;border:1px solid #e8bd50;padding:5px 8px;font-size:11px;font-weight:800;box-shadow:0 5px 12px rgba(114,69,16,.13);animation:cheerBubble 1.05s ease-in-out infinite}.bana-spark{position:absolute;z-index:3;color:#e36d77;font-size:16px;animation:cheerSpark 1.05s ease-in-out infinite}.spark-a{left:5px;top:31px}.spark-b{right:2px;top:49px;animation-delay:.22s}@keyframes banaCheer{0%,100%{transform:translateY(4px) rotate(-4deg) scale(.96)}38%{transform:translateY(-15px) rotate(5deg) scale(1.04)}60%{transform:translateY(-5px) rotate(-2deg) scale(1)}}@keyframes cheerGlow{0%,100%{opacity:.45;transform:scale(.84)}45%{opacity:1;transform:scale(1.22)}}@keyframes cheerBubble{0%,100%{transform:translateY(3px) rotate(-3deg);opacity:.76}42%{transform:translateY(-5px) rotate(3deg);opacity:1}}@keyframes cheerSpark{0%,100%{opacity:.25;transform:scale(.55) rotate(-12deg)}48%{opacity:1;transform:scale(1.12) rotate(15deg)}}@media(max-width:800px){.live-main,.live-status{min-height:360px}.live-bana-mini{width:145px;height:127px}.live-bana-mini img{width:137px;height:120px}.bana-cheer{right:-6px;top:0}}
/* Finished-class views: celebratory, scannable and classroom-ready. */
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1.05fr;gap:18px;margin-top:18px}.results-panel,.student-report{padding:27px}.result-panel-head{display:flex;align-items:end;justify-content:space-between;gap:12px;margin-bottom:18px}.result-panel-head h2{margin:6px 0 0;font:700 28px Fraunces,"Noto Sans SC",serif}.result-panel-head>span{border-radius:999px;background:#fff1bd;color:#84591e;padding:7px 10px;font:700 11px "DM Mono",monospace}.ranking-list{max-height:360px;overflow:auto;padding-right:4px}.result-rank-row{display:grid;grid-template-columns:38px 1fr auto;gap:10px;align-items:center;padding:13px 9px;border-top:1px solid #f0e2bf}.result-rank-row.top-rank{background:#fff8e2;border-radius:11px;border:0;margin-bottom:4px}.result-rank-row>b{font:700 14px "DM Mono",monospace;color:#9a7027}.result-rank-row strong{font:700 20px Fraunces,serif;color:#754622}.result-rank-row strong small{font:500 11px "Noto Sans 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p{max-width:480px;line-height:1.7}.student-score{display:flex;align-items:center;gap:11px;margin-top:24px}.student-score>b{font:700 78px/.8 Fraunces,serif;letter-spacing:-.06em;color:#754622}.student-score>span{font:700 23px Fraunces,serif;color:#8a6c50}.student-score small{display:block;margin-top:6px;font:500 12px "Noto Sans SC",sans-serif;color:#8a6c50}.student-result-bana{position:relative;display:grid;place-items:center}.student-result-bana>div{position:absolute;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.96) 0 16%,rgba(101,216,227,.55) 42%,rgba(101,216,227,0) 70%);animation:resultsGlow 2s ease-in-out infinite}.student-result-bana img{position:relative;width:185px;height:185px;object-fit:contain;filter:drop-shadow(0 18px 14px rgba(85,51,14,.18));animation:resultsFloat 3s ease-in-out infinite}.student-report{margin-top:18px}.student-score-pill{display:grid;place-items:center;width:57px;height:57px;border-radius:50%;background:#754622!important;color:#fff9da!important;font:700 16px Fraunces,serif!important}.student-answer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:11px}.student-answer-card{position:relative;min-height:116px;padding:14px;border:1px solid #ecd8ad;border-radius:15px;background:#fffdf7}.student-answer-card.correct{background:linear-gradient(145deg,#edfaed,#fffdf7);border-color:#bfdbb9}.student-answer-card.wrong{background:linear-gradient(145deg,#fff3ed,#fffdf7);border-color:#efc6b9}.student-answer-card>b{display:block;font:700 12px "DM Mono",monospace;color:#a47829}.student-answer-card span{display:block;margin-top:11px;font-weight:700}.student-answer-card i{position:absolute;top:12px;right:12px;display:grid;place-items:center;width:25px;height:25px;border-radius:50%;font-style:normal;font-weight:900}.student-answer-card.correct i{background:#66ab73;color:#fff}.student-answer-card.wrong i{background:#e39175;color:#fff}.student-answer-card small{display:block;margin-top:6px;color:#8a6c50;font-size:10px}.student-home-button{margin-top:24px}@keyframes resultsFloat{50%{transform:translateY(-10px) rotate(-2deg)}}@keyframes resultsGlow{50%{transform:scale(1.14);opacity:.78}}@media(max-width:760px){.teacher-results,.student-results{margin:20px auto}.results-intro{padding:30px 25px;min-height:230px}.results-intro img{width:130px;height:130px}.podium-stage{padding:16px 10px;gap:7px}.podium-person{padding:12px 6px}.podium-person b{font-size:13px}.podium-person small{font-size:9px}.results-columns{grid-template-columns:1fr}.question-insights{grid-template-columns:1fr 1fr}.student-result-hero{grid-template-columns:1fr;min-height:390px;padding:34px 28px}.student-result-bana{position:absolute;right:12px;bottom:8px}.student-result-bana img{width:145px;height:145px}.student-result-bana>div{width:135px;height:135px}.student-answer-grid{grid-template-columns:repeat(2,1fr)}}
.student-coin-reward{display:inline-flex;align-items:center;gap:10px;margin-top:18px;padding:10px 14px;border:1px solid #e6bd53;border-radius:15px;background:linear-gradient(135deg,#fff9dd,#ffed9c);box-shadow:0 8px 20px rgba(157,103,18,.1)}.student-coin-mark{display:grid;place-items:center;width:32px;height:32px;border:2px solid #bd7d12;border-radius:50%;background:linear-gradient(135deg,#ffe985,#efaa20);color:#754622;font:700 18px Fraunces,serif;box-shadow:inset 0 0 0 3px #fff3b7}.student-coin-reward b,.student-coin-reward small{display:block}.student-coin-reward b{font-size:14px;color:#754622}.student-coin-reward small{margin-top:2px;font-size:11px;color:#8a6c50}@media(max-width:760px){.student-coin-reward{margin-top:16px}.student-result-hero{min-height:455px}}
.teacher-results-actions{display:flex;justify-content:center;margin:22px 0 10px}.teacher-results-actions .secondary{padding:13px 22px;cursor:pointer}
.student-answer-card{min-height:132px}.student-answer-card span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.student-answer-card small{line-height:1.5;word-break:break-word}

/* ───────── 2026-09-21：结算页排名横幅 / 题间准备画面 / 老师端排行榜与跳题 ───────── */
.rank-hero{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin:0 0 18px;padding:22px 30px;border-radius:26px;color:#442817;border:1px solid #e8c978;background:linear-gradient(120deg,#fff8e0,#ffefb8);box-shadow:0 14px 34px rgba(160,110,20,.18);animation:rankPop .6s cubic-bezier(.2,.9,.25,1.3) both}
.rank-tier-1{background:linear-gradient(120deg,#ffe98a,#f7b733 55%,#ffe28a);border-color:#e0a21c}
.rank-tier-2{background:linear-gradient(120deg,#f6f6f4,#c9ccd1 55%,#f2f2f0);border-color:#b4b9c0}
.rank-tier-3{background:linear-gradient(120deg,#f8dcc0,#d99a62 55%,#f6d5b5);border-color:#c98750}
.rank-medal{font-size:clamp(56px,9vw,88px);line-height:1;animation:rankMedal 1.8s ease-in-out infinite}
.rank-main{display:flex;flex-direction:column;gap:2px;flex:1;min-width:210px}
.rank-label{font:700 13px "DM Mono",monospace;letter-spacing:.16em;color:#7a5316}
.rank-number{font:700 clamp(46px,8.5vw,80px)/1.05 Fraunces,"Noto Sans SC",serif;letter-spacing:-.02em;color:#3d2410}
.rank-total{font-weight:700;font-size:clamp(16px,2.4vw,22px);color:#6b4519;background:rgba(255,255,255,.6);padding:10px 18px;border-radius:999px}
@keyframes rankPop{from{opacity:0;transform:translateY(16px) scale(.94)}to{opacity:1;transform:none}}
@keyframes rankMedal{0%,100%{transform:rotate(-6deg) scale(1)}50%{transform:rotate(6deg) scale(1.08)}}

.ready-stage{padding:56px 30px}
.ready-title{font:700 clamp(34px,6vw,54px)/1.1 Fraunces,"Noto Sans SC",serif;margin:14px 0 6px}
.ready-count{font:700 clamp(110px,26vw,190px)/1 Fraunces,serif;color:var(--coral);margin:8px 0 12px;animation:readyPulse 1s ease-in-out infinite}
@keyframes readyPulse{0%,100%{transform:scale(1)}50%{transform:scale(1.07)}}

.skip-question{position:relative;z-index:3;width:100%;margin-top:14px;border:1px solid #d8bd78;border-radius:12px;background:#fff9e7;color:var(--brown);padding:12px 16px;font:700 15px "Noto Sans SC",sans-serif;cursor:pointer;transition:background .15s,transform .15s}
.skip-question:hover:not(:disabled){background:#ffefb8;transform:translateY(-1px)}
.skip-question[data-armed="1"]{background:var(--brown);color:#fff;border-color:var(--brown)}
.skip-question:disabled{opacity:.45;cursor:not-allowed}

.rank-overlay{position:fixed;inset:0;z-index:60;display:grid;place-items:center;padding:20px;background:rgba(52,30,8,.58);animation:rankFade .25s ease both}
.rank-overlay.closing{animation:rankFadeOut .3s ease both}
.rank-board{width:min(640px,100%);background:var(--white);border:1px solid #ead8ae;border-radius:30px;padding:28px 30px 22px;box-shadow:0 30px 80px rgba(60,35,10,.4);animation:rankPop .5s cubic-bezier(.2,.9,.25,1.3) both}
.rank-board .eyebrow{display:block;text-align:center}
.rank-board h2{font:700 34px Fraunces,"Noto Sans SC",serif;margin:6px 0 18px;text-align:center;color:#442817}
.rank-rows{min-height:120px}
.rank-loading{text-align:center;color:var(--muted);padding:40px 0;font-weight:700}
.rank-row-lb{display:grid;grid-template-columns:56px 1fr auto 70px;align-items:center;gap:12px;height:64px;padding:0 18px;margin-bottom:8px;border-radius:18px;background:#fff9e7;border:1px solid #f0dfae;font-weight:700;transition:transform .9s cubic-bezier(.22,1,.36,1),opacity .6s ease}
.rank-row-lb.r1{background:linear-gradient(90deg,#fff0a8,#ffe07a);border-color:#e6bf45}
.rank-row-lb.r2{background:linear-gradient(90deg,#f6f6f4,#dfe1e5)}
.rank-row-lb.r3{background:linear-gradient(90deg,#f9e3cf,#efc7a2)}
.rank-pos{font:700 28px Fraunces,serif;text-align:center}
.rank-name{font-size:22px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank-score{font:700 20px "DM Mono",monospace;color:var(--brown)}
.rank-move{font-weight:700;font-size:16px;text-align:right}
.rank-move.up{color:#2f8a4d}.rank-move.down{color:#cc4b37}.rank-move.same{color:#a98d63}
.rank-sub{text-align:center;color:var(--muted);font-size:13px;margin:12px 0 0}
@keyframes rankFade{from{opacity:0}to{opacity:1}}
@keyframes rankFadeOut{from{opacity:1}to{opacity:0}}

/* 选择题：学生端选项按钮 + 老师投影画面 */
.choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px auto 8px;max-width:680px}
.choice-btn{display:flex;align-items:center;gap:12px;min-height:72px;padding:14px 18px;border:2px solid #e3c98b;border-radius:18px;background:#fffdf5;color:#442817;font:700 20px "Noto Sans SC",sans-serif;text-align:left;cursor:pointer;transition:transform .1s,background .15s}
.choice-btn span{min-width:0;word-break:break-word}
.choice-btn b,.teacher-choices b{display:grid;place-items:center;width:34px;height:34px;flex:none;border-radius:50%;color:#fff;font:700 16px "DM Mono",monospace}
.choice-btn:nth-child(1) b,.teacher-choices li:nth-child(1) b{background:#1fa892}
.choice-btn:nth-child(2) b,.teacher-choices li:nth-child(2) b{background:#e0524a}
.choice-btn:nth-child(3) b,.teacher-choices li:nth-child(3) b{background:#d99a1e}
.choice-btn:nth-child(4) b,.teacher-choices li:nth-child(4) b{background:#7a5bc4}
.choice-btn:hover:not(:disabled){transform:translateY(-2px);background:#fff6dc}
.choice-btn.picked{border-color:#754622;background:#fff1c9;box-shadow:0 0 0 3px rgba(117,70,34,.15)}
.choice-btn:disabled:not(.picked){opacity:.5;cursor:default}
.teacher-choices{list-style:none;padding:0;margin:16px 0 0;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.teacher-choices li{display:flex;align-items:center;gap:12px;padding:12px 16px;border:1px solid #e3c98b;border-radius:14px;background:#fffdf5;font:700 22px "Noto Sans SC",sans-serif;color:#442817}
@media(max-width:560px){.choice-grid{grid-template-columns:1fr}.choice-btn{min-height:60px;font-size:18px}}
/* 结算页：正确答案 */
.student-answer-card .right-answer{display:block;margin-top:6px;font-style:normal;font-size:12px;font-weight:700;color:#2f7a45;word-break:break-word}
.student-answer-card.correct .right-answer{color:#5d8a63;font-weight:600}
/* 题目保留老师打的空格：「(_ _ _   _ _ _ _)」这种拆字母提示，空格本身就是提示 */
.student-stage .prompt,.live-question{white-space:pre-wrap}
/* 多选题 */
.choice-multi-hint{margin:14px 0 0;text-align:center;color:#8a5a2b;font-weight:700}
.choice-btn{position:relative}
.choice-tick{position:absolute;top:10px;right:12px;display:grid;place-items:center;width:26px;height:26px;border:2px solid #e3c98b;border-radius:8px;color:transparent;font-style:normal;font-weight:900}
.is-multi .choice-btn.picked .choice-tick{background:#754622;border-color:#754622;color:#fff}
.teacher-multi{margin:12px 0 0;color:#8a5a2b;font-weight:700}

/* ───────── 答对速度特效（live-speed-fx.js） ───────── */
.speedfx{position:fixed;inset:0;z-index:9000;pointer-events:none;display:grid;place-items:center;animation:sfxIn .18s ease-out both;
  --c1:#ff5a1f;--c2:#ffcf4a;--c3:#ff2e2e;--glow:rgba(255,120,40,.55)}
.speedfx.tier-3{--c1:#ff3d7f;--c2:#ffc2dc;--c3:#ff2747;--glow:rgba(255,70,130,.5)}
.speedfx.tier-2{--c1:#4f6bff;--c2:#bfe6ff;--c3:#a24bff;--glow:rgba(90,120,255,.5)}
.speedfx.tier-1{--c1:#1f9a8a;--c2:#d6fff6;--c3:#1f9a8a;--glow:rgba(40,180,160,.45)}
.speedfx.leaving{animation:sfxOut .4s ease-in both}
.speedfx-dim{position:absolute;inset:0;background:radial-gradient(circle at 50% 50%,rgba(70,48,30,.55),rgba(36,24,14,.78));backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px)}
.speedfx-stage{position:relative;width:min(94vw,780px);height:min(88vh,660px)}
.speedfx-head{position:absolute;left:0;right:0;top:3%;display:flex;flex-direction:column;align-items:center;gap:10px;z-index:4}
.speedfx-rank{background:rgba(40,28,18,.78);color:#fff6e3;font:700 clamp(12px,2.2vmin,16px)/1 "Noto Sans SC",sans-serif;letter-spacing:.12em;padding:8px 16px;border-radius:999px;animation:sfxRank .35s ease-out both}
.speedfx-title{font:900 clamp(46px,12vmin,112px)/1.05 "Noto Sans SC",sans-serif;color:#fff;letter-spacing:.02em;white-space:nowrap;
  -webkit-text-stroke:clamp(6px,1.3vmin,11px) var(--c1);paint-order:stroke fill;
  text-shadow:0 6px 0 var(--c3),0 0 28px var(--glow),0 0 60px var(--glow);animation:sfxTitle .62s cubic-bezier(.2,1.6,.4,1) both}
.speedfx-mult{background:linear-gradient(180deg,#fff7c9,#ffd24d 60%,#f3a81f);color:#6b3a10;font:900 clamp(22px,5vmin,40px)/1 "Noto Sans SC",sans-serif;padding:.38em .9em;border-radius:16px;
  box-shadow:0 6px 0 #c9771a,0 10px 26px rgba(0,0,0,.25),inset 0 2px 0 rgba(255,255,255,.8);animation:sfxMult .5s .22s cubic-bezier(.2,1.7,.4,1) both,sfxWiggle 1.1s .9s ease-in-out infinite}
.speedfx-burst{position:absolute;left:50%;top:60%;width:min(60vmin,520px);height:min(60vmin,520px);transform:translate(-50%,-50%);z-index:1}
.speedfx-rays{position:absolute;inset:8%;border-radius:50%;background:repeating-conic-gradient(from 0deg,rgba(255,236,170,.55) 0 2deg,transparent 2deg 15deg);
  -webkit-mask:radial-gradient(circle,transparent 18%,#000 30%,transparent 70%);mask:radial-gradient(circle,transparent 18%,#000 30%,transparent 70%);animation:sfxSpin 3s linear infinite,sfxRays .5s ease-out both}
.speedfx-flame{position:absolute;left:50%;top:50%;width:8%;height:21%;margin:-10.5% 0 0 -4%;border-radius:50% 50% 50% 50%/62% 62% 38% 38%;
  background:radial-gradient(ellipse at 50% 70%,#fff8d8 0,var(--c2) 22%,var(--c1) 55%,var(--c3) 82%,transparent 100%);filter:blur(.6px) drop-shadow(0 0 10px var(--glow));
  transform:rotate(var(--a)) translateY(-150%) scale(var(--s));transform-origin:50% 50%;animation:sfxFlame .55s var(--d) cubic-bezier(.2,1.4,.4,1) both,sfxFlicker .32s calc(var(--d) + .55s) ease-in-out infinite alternate}
.speedfx-bana{position:absolute;left:50%;top:40%;width:min(30vmin,260px);transform:translateX(-50%);z-index:3;animation:sfxBana .7s .12s cubic-bezier(.2,1.5,.4,1) both}
.speedfx-bana img{position:relative;display:block;width:100%;height:auto;filter:drop-shadow(0 12px 22px rgba(0,0,0,.28));animation:sfxBob .9s .8s ease-in-out infinite}
.speedfx-glow{position:absolute;inset:-12%;border-radius:50%;background:radial-gradient(circle,rgba(255,240,170,.9),rgba(255,210,80,.35) 45%,transparent 70%);animation:sfxGlow 1s ease-in-out infinite}
.speedfx-coins{position:absolute;left:50%;top:62%;z-index:4}
.speedfx-coin{position:absolute;left:-21px;top:-21px;width:42px;height:42px;border-radius:50%;display:grid;place-items:center;font:900 19px/1 "Noto Sans SC",sans-serif;font-style:normal;color:#9a5a08;
  background:radial-gradient(circle at 35% 30%,#fff6c4,#ffd23f 45%,#e79a12);box-shadow:inset 0 -3px 0 #c97d0b,0 4px 10px rgba(0,0,0,.25);opacity:0;animation:sfxCoin 1.5s var(--delay) cubic-bezier(.25,.7,.45,1) both}
.speedfx-card{position:absolute;right:3%;bottom:8%;z-index:5;display:flex;align-items:baseline;gap:4px;padding:14px 26px 16px;border-radius:22px;background:linear-gradient(180deg,#fffdf2,#ffe9a8);
  box-shadow:0 7px 0 #e1a52a,0 14px 30px rgba(0,0,0,.28);color:#7a4313;opacity:0;transform:translateX(40px) scale(.6)}
.speedfx-card.in{animation:sfxCard .5s cubic-bezier(.2,1.6,.4,1) both}
.speedfx-card small{font:900 clamp(20px,4vmin,30px)/1 "Noto Sans SC",sans-serif}
.speedfx-card b{font:900 clamp(56px,12vmin,104px)/1 "DM Mono","Noto Sans SC",monospace;color:#f07b12;-webkit-text-stroke:3px #fff3c9;paint-order:stroke fill;text-shadow:0 4px 0 #c45f0c}
.speedfx-card span{font:800 clamp(18px,3.4vmin,26px)/1 "Noto Sans SC",sans-serif}
.speedfx.tier-1 .speedfx-bana{top:34%}
.speedfx.calm *{animation-duration:.01s!important;animation-iteration-count:1!important}
@media(max-width:600px){.speedfx-card{right:50%;bottom:4%;transform:translateX(50%)}.speedfx-card.in{animation-name:sfxCardM}.speedfx-bana{top:38%;width:min(40vmin,220px)}}
@keyframes sfxIn{from{opacity:0}to{opacity:1}}
@keyframes sfxOut{to{opacity:0;transform:scale(1.04)}}
@keyframes sfxRank{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:none}}
@keyframes sfxTitle{0%{opacity:0;transform:scale(.25) rotate(-8deg)}60%{opacity:1;transform:scale(1.18) rotate(3deg)}100%{transform:scale(1) rotate(0)}}
@keyframes sfxMult{0%{opacity:0;transform:scale(.3) translateY(10px)}100%{opacity:1;transform:none}}
@keyframes sfxWiggle{0%,100%{transform:rotate(-2deg) scale(1)}50%{transform:rotate(2deg) scale(1.06)}}
@keyframes sfxSpin{to{rotate:360deg}}
@keyframes sfxRays{from{opacity:0;scale:.4}to{opacity:1;scale:1}}
@keyframes sfxFlame{0%{opacity:0;transform:rotate(var(--a)) translateY(-40%) scale(.2)}100%{opacity:1;transform:rotate(var(--a)) translateY(-150%) scale(var(--s))}}
@keyframes sfxFlicker{from{transform:rotate(var(--a)) translateY(-150%) scale(var(--s))}to{transform:rotate(var(--a)) translateY(-162%) scale(calc(var(--s) * 1.12));filter:blur(.6px) brightness(1.15) drop-shadow(0 0 14px var(--glow))}}
@keyframes sfxBana{0%{opacity:0;transform:translateX(-50%) translateY(90px) scale(.5)}100%{opacity:1;transform:translateX(-50%)}}
@keyframes sfxBob{0%,100%{transform:translateY(0) rotate(-3deg)}50%{transform:translateY(-12px) rotate(3deg)}}
@keyframes sfxGlow{0%,100%{opacity:.6;transform:scale(.92)}50%{opacity:1;transform:scale(1.08)}}
@keyframes sfxCoin{0%{opacity:0;transform:translate(0,0) scale(.3)}12%{opacity:1}38%{transform:translate(var(--dx),calc(var(--up) * -1)) scale(1.1) rotate(calc(var(--r) * .4))}85%{opacity:1}100%{opacity:0;transform:translate(calc(var(--dx) * 1.45),var(--fall)) scale(.9) rotate(var(--r))}}
@keyframes sfxCard{0%{opacity:0;transform:translateX(40px) scale(.6)}100%{opacity:1;transform:none}}
@keyframes sfxCardM{0%{opacity:0;transform:translateX(50%) translateY(30px) scale(.6)}100%{opacity:1;transform:translateX(50%)}}

/* ───────── 答错特效：哭泣 Bana＋落雨 ───────── */
.wrongfx{--c1:#3d6fd9;--glow:rgba(110,160,255,.55);--c3:#2a4f9e}
.wrongfx.tone-purple{--c1:#8b5bd6;--glow:rgba(180,130,255,.55);--c3:#5e3aa0}
.wrongfx.tone-teal{--c1:#1f9a8a;--glow:rgba(80,210,190,.5);--c3:#167266}
.wrongfx .speedfx-dim{background:radial-gradient(circle at 50% 55%,rgba(60,66,82,.55),rgba(28,32,44,.8))}
.wrongfx-rain{position:absolute;inset:0;overflow:hidden}
.wrongfx-rain i{position:absolute;top:-12%;width:2px;height:var(--len);border-radius:2px;background:linear-gradient(180deg,rgba(200,225,255,0),rgba(200,225,255,.75));transform:rotate(14deg);animation:wfxRain var(--dur) var(--delay) linear infinite}
.wrongfx-title{-webkit-text-stroke:0;color:#fff;font-size:clamp(40px,10vmin,96px);text-shadow:0 0 18px var(--glow),0 0 42px var(--glow),0 4px 0 var(--c3);animation:wfxTitle .6s cubic-bezier(.2,1.3,.4,1) both}
.wrongfx-emoji{display:inline-block;margin-left:.08em;text-shadow:none;animation:wfxDrop 1.2s .5s ease-in-out infinite}
.wrongfx-bana{top:34%;width:min(26vmin,220px);animation:wfxBana .7s .1s cubic-bezier(.2,1.2,.4,1) both}
.wrongfx-bana img{animation:wfxSway 1.6s .7s ease-in-out infinite;filter:drop-shadow(0 10px 18px rgba(0,0,0,.3)) saturate(.92)}
.wrongfx-glow{background:radial-gradient(circle,var(--glow),transparent 68%)}
.wrongfx-shadow{position:absolute;left:12%;right:12%;bottom:-7%;height:9%;border-radius:50%;background:radial-gradient(ellipse,rgba(0,0,0,.35),transparent 70%)}
@media(max-width:600px){.wrongfx-bana{top:36%;width:min(38vmin,200px)}}
@keyframes wfxRain{from{transform:translate(0,0) rotate(14deg)}to{transform:translate(-28vh,118vh) rotate(14deg)}}
@keyframes wfxTitle{0%{opacity:0;transform:translateY(-24px) scale(.9)}100%{opacity:1;transform:none}}
@keyframes wfxBana{0%{opacity:0;transform:translateX(-50%) translateY(-30px) scale(.85)}100%{opacity:1;transform:translateX(-50%)}}
@keyframes wfxSway{0%,100%{transform:rotate(-3deg) translateY(0)}50%{transform:rotate(2deg) translateY(4px)}}
@keyframes wfxDrop{0%,100%{transform:translateY(0)}50%{transform:translateY(5px)}}

/* ───────── 恭喜完成：彩带 ───────── */
.finishfx{position:fixed;inset:0;z-index:8900;pointer-events:none;overflow:hidden;animation:sfxIn .25s ease-out both}
.finishfx.leaving{animation:sfxOut .55s ease-in both}
.finishfx-ribbons{position:absolute;inset:0;perspective:600px}
.finishfx-ribbons i{position:absolute;top:-8%;width:var(--w);height:var(--h);border-radius:3px;background:var(--c);background-image:linear-gradient(180deg,rgba(255,255,255,.28),rgba(0,0,0,.18));opacity:.95;animation:ffxFall var(--dur) var(--delay) cubic-bezier(.35,.1,.6,1) both}
.finishfx-ribbons i.curl{border-radius:50% 50% 50% 50%/20% 20% 80% 80%;height:calc(var(--h) * 1.4)}
.finishfx-ribbons i.dot{width:11px;height:11px;border-radius:50%}
.finishfx-card{position:absolute;left:50%;top:44%;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;gap:6px;padding:22px 38px 26px;border-radius:28px;background:rgba(255,253,244,.94);box-shadow:0 20px 60px rgba(90,50,10,.28),0 0 0 6px rgba(255,210,80,.45);animation:ffxCard .7s cubic-bezier(.2,1.5,.4,1) both}
.finishfx-card.leaving{animation:ffxCardOut .5s ease-in both}
.finishfx-card img{width:min(26vmin,170px);height:auto;margin-top:-80px;filter:drop-shadow(0 10px 18px rgba(0,0,0,.2));animation:sfxBob .9s .6s ease-in-out infinite}
.finishfx-title{font:900 clamp(40px,9vmin,84px)/1.05 "Noto Sans SC",sans-serif;color:#fff;-webkit-text-stroke:clamp(5px,1.1vmin,9px) #f07b12;paint-order:stroke fill;text-shadow:0 5px 0 #c45f0c,0 0 30px rgba(255,170,60,.6);white-space:nowrap}
.finishfx-sub{font:700 clamp(14px,2.6vmin,20px)/1.4 "Noto Sans SC",sans-serif;color:#7a4313;text-align:center}
.finishfx.calm .finishfx-card{animation:none}
@keyframes ffxFall{0%{transform:translate3d(0,0,0) rotateX(0) rotateZ(0)}25%{transform:translate3d(var(--sway),28vh,0) rotateX(calc(var(--spin) * .3)) rotateZ(calc(var(--spin) * .2))}50%{transform:translate3d(calc(var(--sway) * -1),56vh,0) rotateX(calc(var(--spin) * .6)) rotateZ(calc(var(--spin) * .4))}100%{transform:translate3d(var(--sway),118vh,0) rotateX(var(--spin)) rotateZ(calc(var(--spin) * .7));opacity:.9}}
@keyframes ffxCard{0%{opacity:0;transform:translate(-50%,-30%) scale(.6)}100%{opacity:1;transform:translate(-50%,-50%)}}
@keyframes ffxCardOut{to{opacity:0;transform:translate(-50%,-60%) scale(.9)}}

/* ── 2026-10-09 长题目／长答案不再撑破版面（Elson 修改清单 8、10） ──
   grid／flex 子项预设最小宽度＝内容宽度，一个很长的字就把整格撑出去 → 一律可缩、可断行；
   题目字级再按字数由 live-flow.js 加 is-long／is-xlong 缩小。 */
.student-answer-card,.insight-card,.review-mission,.review-mission>div,.choice-btn,.choice-btn span,.teacher-choices li,.live-main,.student-stage{min-width:0}
.student-answer-card small,.student-answer-card .right-answer,.choice-btn span,.teacher-choices li,.live-question,.student-stage .prompt,.review-mission h3,.insight-card b,.feedback{overflow-wrap:anywhere;word-break:break-word}
.student-answer-card{display:flex;flex-direction:column;height:auto}
.student-answer-card span{padding-right:30px;white-space:normal;overflow:visible;text-overflow:clip;overflow-wrap:anywhere;line-height:1.35}
.student-answer-card .right-answer{margin-top:auto;padding-top:6px}
.live-question.is-long{font-size:clamp(40px,5.2vw,68px);letter-spacing:-.02em}
.live-question.is-xlong{font-size:clamp(28px,3.4vw,44px);letter-spacing:0;line-height:1.3}
.student-stage .prompt.is-long{font-size:clamp(36px,6vw,60px)}
.student-stage .prompt.is-xlong{font-size:clamp(26px,4.2vw,40px);line-height:1.35}
.teacher-choices.has-long li{font-size:16px;line-height:1.35}
.choice-grid.has-long .choice-btn{font-size:16px;line-height:1.35}
.choice-btn.is-right{border-color:#5d9b68;background:#edfaed;opacity:1}
.choice-btn.is-wrong{border-color:#e39175;background:#fff3ed;opacity:1}

/* ── 2026-10-09 取消／提前结束游戏＋主页「还在进行中的游戏」 ── */
.bana-end-game{display:block;width:100%;margin-top:10px;padding:10px 14px;border:1px solid #e7b9a9;border-radius:14px;background:#fff6f2;color:#b5452c;font:700 14px "Noto Sans SC",sans-serif;cursor:pointer}
.bana-end-game:hover:not(:disabled){background:#ffe9e1}
.bana-end-game:disabled{opacity:.6;cursor:default}
.bana-end-game.in-game{margin-top:8px;font-size:13px;padding:8px 12px}
.live-banner{display:grid;gap:10px;margin-bottom:22px;padding:20px 24px;border:1px solid #efc6b9;background:linear-gradient(145deg,#fff3ed,#fffdf7)}
.live-banner .hint{margin:4px 0 0}
.live-banner-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:10px 0;border-top:1px dashed #efc6b9}
.live-banner-row span{flex:1;min-width:200px;display:grid;gap:2px}
.live-banner-row small{color:#8a6c50}
.live-banner-row a{text-decoration:none}
.bana-end-game.in-game{position:relative;z-index:3;box-shadow:0 4px 12px rgba(181,69,44,.12)}
.bana-exit-game{padding:9px 16px;border:1px solid #d9826a;border-radius:999px;background:#c9412f;color:#fff;font:700 14px "Noto Sans SC",sans-serif;cursor:pointer;box-shadow:0 4px 12px rgba(201,65,47,.22);white-space:nowrap}
.bana-exit-game:hover:not(:disabled){background:#b23624}
.bana-exit-game:disabled{opacity:.6;cursor:default}

/* ── 2026-10-09 手机顶栏：品牌字两行＋右边按钮挤到下一行，固定 92px 高度让「退出」叠到下面的卡片上 ── */
@media(max-width:640px){
  .live-topbar{height:auto;min-height:68px;padding:10px 0;gap:10px;align-items:flex-start}
  .live-topbar .brand{min-width:0;flex:1 1 auto}
  .live-topbar .brand em{display:none}
  .live-top-actions{flex:0 1 auto;flex-wrap:wrap;justify-content:flex-end;gap:6px;max-width:62%}
  .live-top-actions>*{flex:none}
  .bana-exit-game{padding:7px 12px;font-size:12px}
}

/* ── 2026-10-12 登录失败记录（老师） ── */
.lf-page{padding:30px}
.lf-page h1{margin:8px 0 6px;font:700 34px Fraunces,"Noto Sans SC",serif}
.lf-range{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}
.lf-range .active{background:#754622;color:#fff;border-color:#754622}
.lf-summary{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:10px;margin:8px 0 18px}
.lf-summary>div{padding:12px 14px;border:1px solid #ead8ae;border-radius:14px;background:#fffdf7}
.lf-summary b{display:block;font:700 26px "DM Mono",monospace}
.lf-summary span{font-size:12px;color:#8a6c50}
.lf-summary .lf-miss b{color:#c9412f}.lf-summary .lf-format b{color:#b07a12}.lf-summary .lf-pass b{color:#5b55a8}
.lf-table-wrap{overflow-x:auto;border:1px solid #ead8ae;border-radius:14px}
.lf-table{width:100%;border-collapse:collapse;font-size:14px}
.lf-table th{position:sticky;top:0;background:#fff6dc;text-align:left;padding:10px 12px;font-size:12px;color:#754622;white-space:nowrap}
.lf-table td{padding:9px 12px;border-top:1px solid #f1e5c7;vertical-align:middle}
.lf-name{font-family:"DM Mono",monospace;word-break:break-all}
.lf-tag{display:inline-block;padding:3px 9px;border-radius:999px;font-size:12px;font-weight:700;white-space:nowrap}
.lf-tag.lf-miss{background:#fff0eb;color:#c9412f}.lf-tag.lf-format{background:#fff6dc;color:#b07a12}.lf-tag.lf-pass{background:#efeefe;color:#5b55a8}
.lf-ok{color:#5b55a8}

/* ── 2026-10-13 老师端：正确答案绿框＋BANA 排名机（老虎机） ── */
.answer-reveal,.slot-overlay{position:fixed;inset:0;z-index:60;display:grid;place-items:center;padding:20px;background:rgba(63,38,18,.42);backdrop-filter:blur(3px);animation:slotFadeIn .25s ease}
.answer-reveal.closing,.slot-overlay.closing{animation:slotFadeOut .3s ease forwards}
.answer-reveal-card{position:relative;width:min(560px,92vw);padding:30px 34px 24px;border:4px solid #8fd49a;border-radius:28px;background:linear-gradient(160deg,#f3fff2,#e3f7e1);text-align:center;box-shadow:0 24px 60px rgba(30,80,40,.3);animation:answerPop .55s cubic-bezier(.2,1.4,.4,1)}
.answer-reveal-card i{display:grid;place-items:center;width:58px;height:58px;margin:-62px auto 8px;border:4px solid #fff;border-radius:50%;background:#2f9e58;color:#fff;font:900 30px "Noto Sans SC",sans-serif;font-style:normal;box-shadow:0 8px 18px rgba(47,158,88,.35)}
.answer-reveal-card .eyebrow{color:#3f7d4d}
.answer-reveal-card h2{margin:4px 0 14px;font:800 26px "Noto Sans SC",sans-serif;color:#24502f}
.answer-reveal-value{display:block;margin:8px auto;padding:12px 18px;border:2px solid #9bd8a5;border-radius:16px;background:#fff;color:#1f6b36;font:800 clamp(26px,4.4vw,44px) "Noto Sans SC",sans-serif;overflow-wrap:anywhere}
.answer-reveal-card small{display:block;margin-top:10px;color:#5f8a67;font-size:14px}
.slot-spark{position:absolute;color:#ffe27a;font-size:28px;text-shadow:0 0 12px rgba(255,226,122,.9);animation:slotTwinkle 1.2s ease-in-out infinite}
.slot-spark.s1{left:22%;top:24%}.slot-spark.s2{right:22%;top:20%;animation-delay:.3s}.slot-spark.s3{left:26%;bottom:24%;animation-delay:.6s}.slot-spark.s4{right:25%;bottom:28%;animation-delay:.9s}
.slot-machine{position:relative;width:min(640px,88vw);padding:58px 30px 26px;border:5px solid #c88a2c;border-radius:34px;background:linear-gradient(180deg,#ffe9a6,#f6c95e 55%,#e8a93c);box-shadow:inset 0 -10px 0 rgba(150,90,20,.25),0 30px 70px rgba(60,30,10,.4);animation:slotDrop .6s cubic-bezier(.2,1.3,.4,1)}
.slot-title{position:absolute;left:50%;top:-24px;transform:translateX(-50%);padding:12px 40px;border:4px solid #c88a2c;border-radius:16px;background:linear-gradient(180deg,#2bb391,#1d8d72);color:#fff;font:900 22px "Noto Sans SC",sans-serif;letter-spacing:.18em;white-space:nowrap;box-shadow:0 8px 0 #15684f}
.slot-bulbs{display:flex;justify-content:space-between;margin:0 10px 14px}
.slot-bulbs i{width:13px;height:13px;border-radius:50%;background:#fff4c7;border:2px solid #c88a2c;animation:slotBulb .8s steps(1) infinite}
.slot-bulbs i:nth-child(odd){animation-delay:.4s}
.slot-screen{padding:14px 16px 12px;border:6px solid #8a5a1e;border-radius:20px;background:#fffdf5;box-shadow:inset 0 4px 12px rgba(0,0,0,.18)}
.slot-screen-head{display:grid;grid-template-columns:70px 1fr 90px;gap:8px;padding:0 12px 6px;color:#8a6c50;font-size:12px}
.slot-screen-head b{grid-column:1/-1;margin-bottom:6px;padding:6px;border-radius:10px;background:#e6f6ef;color:#1d8d72;text-align:center;font-size:15px}
.slot-screen-head span:last-child{text-align:right}
.slot-window{position:relative;height:230px;overflow:hidden;border-radius:12px;background:linear-gradient(180deg,#f6f1e2,#fffdf5 18%,#fffdf5 82%,#f6f1e2)}
.slot-window:before,.slot-window:after{content:"";position:absolute;left:0;right:0;height:26px;z-index:2;pointer-events:none}
.slot-window:before{top:0;background:linear-gradient(#efe6cc,rgba(255,253,245,0))}.slot-window:after{bottom:0;background:linear-gradient(rgba(255,253,245,0),#efe6cc)}
.slot-wait{display:grid;place-items:center;align-content:center;height:100%;gap:6px;color:#5d4630;font:700 20px "Noto Sans SC",sans-serif}
.slot-wait small{color:#2f9e58;font-size:13px}
.slot-strip{will-change:transform}
.slot-row{display:grid;grid-template-columns:70px 1fr 90px;gap:8px;align-items:center;height:46px;padding:0 12px;border-bottom:1px solid #f1e5c7;font:700 17px "Noto Sans SC",sans-serif;color:#442817}
.slot-row b{color:#c07a1e;font:800 16px "DM Mono",monospace}
.slot-row span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.slot-row em{font-style:normal;text-align:right;color:#2f7a45}
.slot-row.blur{filter:blur(1.2px);opacity:.75}
.slot-overlay.settled .slot-row.final.r1{background:linear-gradient(90deg,#fff1bd,#ffe08a);box-shadow:inset 4px 0 0 #e1a52a}
.slot-overlay.settled .slot-row.final.r1 b:after{content:" 🥇"}
.slot-overlay.settled .slot-screen{animation:slotFlash .6s ease 2}
.slot-plate{margin:16px auto 0;width:max-content;max-width:100%;padding:9px 22px;border:3px solid #c88a2c;border-radius:999px;background:#fff6dc;color:#754622;font:800 14px "Noto Sans SC",sans-serif}
.slot-lever{position:absolute;right:-46px;top:120px;width:40px;height:160px}
.slot-lever-base{position:absolute;left:4px;bottom:18px;width:30px;height:46px;border:4px solid #c88a2c;border-radius:12px;background:#f6c95e}
.slot-lever-stick{position:absolute;left:15px;bottom:40px;width:9px;height:110px;border-radius:6px;background:linear-gradient(90deg,#9aa4ad,#e6ebef,#9aa4ad);transform-origin:50% 100%;transition:transform .45s cubic-bezier(.5,0,.5,1)}
.slot-lever-ball{position:absolute;left:3px;bottom:138px;width:34px;height:34px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#ff8a8a,#e0332e 60%,#a71f1b);box-shadow:0 4px 10px rgba(0,0,0,.3);transition:transform .45s cubic-bezier(.5,0,.5,1)}
.slot-lever.pull .slot-lever-stick{animation:leverStick .9s ease-in-out}
.slot-lever.pull .slot-lever-ball{animation:leverBall .9s ease-in-out}
@keyframes leverStick{0%,100%{transform:scaleY(1)}40%,55%{transform:scaleY(-.15)}}
@keyframes leverBall{0%,100%{transform:translateY(0)}40%,55%{transform:translateY(120px)}}
@keyframes slotDrop{0%{opacity:0;transform:translateY(-60px) scale(.9)}100%{opacity:1;transform:none}}
@keyframes answerPop{0%{opacity:0;transform:scale(.7)}100%{opacity:1;transform:none}}
@keyframes slotFadeIn{from{opacity:0}to{opacity:1}}
@keyframes slotFadeOut{to{opacity:0}}
@keyframes slotBulb{0%{background:#fff4c7}50%{background:#ffcf3f;box-shadow:0 0 10px #ffcf3f}}
@keyframes slotTwinkle{0%,100%{opacity:.3;transform:scale(.8)}50%{opacity:1;transform:scale(1.15)}}
@keyframes slotFlash{50%{box-shadow:inset 0 4px 12px rgba(0,0,0,.18),0 0 0 6px rgba(255,214,90,.7)}}
@media(max-width:760px){.slot-lever{right:-30px;transform:scale(.8)}.slot-machine{padding:52px 16px 20px}.slot-row,.slot-screen-head{grid-template-columns:52px 1fr 70px}}
@media(prefers-reduced-motion:reduce){.slot-machine,.answer-reveal-card,.slot-bulbs i,.slot-spark{animation:none!important}}

/* ── 2026-10-15 老师端右栏：拉拉队 Bana 改成排在按钮下方（以前绝对定位在右下角，跟「提前结束游戏」互相遮住） ── */
.live-status .live-bana-mini{position:relative;right:auto;bottom:auto;align-self:center;flex:none;margin:auto 0 0;padding-top:14px;width:170px;height:150px}
.live-status .live-bana-mini img{width:150px;height:132px}
.live-status .bana-cheer{top:4px;right:-10px}
.live-status .skip-question,.live-status .bana-end-game{position:relative;z-index:3}

/* ── 2026-10-16 正确答案多 1.5 秒、排名机定格多 2 秒：加动态免得发闷 ── */
.answer-reveal-card{overflow:hidden}
.answer-reveal-value{animation:answerBreath 1.6s ease-in-out .6s infinite}
.answer-reveal-bar{position:absolute;left:0;bottom:0;height:6px;width:100%;background:linear-gradient(90deg,#3fae66,#a8e6a1);transform-origin:left;animation:answerBar linear forwards}
.slot-spark.s5{left:14%;top:52%;animation-delay:.45s}.slot-spark.s6{right:15%;top:58%;animation-delay:.75s}
@keyframes answerBreath{0%,100%{transform:scale(1)}50%{transform:scale(1.035);box-shadow:0 0 0 6px rgba(63,174,102,.12)}}
@keyframes answerBar{from{transform:scaleX(1)}to{transform:scaleX(0)}}
.slot-overlay.settled .slot-row.final.pop{animation:slotRowPop .45s cubic-bezier(.2,1.5,.4,1) both}
.slot-overlay.settled .slot-row.final.r1 b:after{display:inline-block;animation:crownBounce .9s ease-in-out .5s infinite}
.slot-overlay.settled .slot-bulbs i{animation-duration:.35s}
.slot-coins{position:absolute;left:50%;top:58%;width:0;height:0;pointer-events:none;z-index:5}
.slot-coins i{position:absolute;width:26px;height:26px;margin:-13px 0 0 -13px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#fff3b0,#f6c43a 55%,#c98a12);border:2px solid #a8700e;box-shadow:0 2px 6px rgba(0,0,0,.25);animation:slotCoin 1.3s cubic-bezier(.2,.7,.4,1) both}
@keyframes slotRowPop{0%{transform:scale(.85);opacity:.4}100%{transform:none;opacity:1}}
@keyframes crownBounce{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-6px) rotate(-8deg)}}
@keyframes slotCoin{0%{transform:translate(0,0) scale(.4);opacity:0}15%{opacity:1}70%{transform:translate(var(--dx),var(--dy)) scale(1) rotate(200deg);opacity:1}100%{transform:translate(var(--dx),calc(var(--dy) + 140px)) scale(.9) rotate(320deg);opacity:0}}
@media(prefers-reduced-motion:reduce){.answer-reveal-value,.slot-coins i,.slot-overlay.settled .slot-row.final.pop{animation:none!important}}

/* ── 2026-10-16 老师端答题画面：题目格变大（长题目放得下），倒数格收窄 ── */
@media(min-width:900px){
  .teacher-live{grid-template-columns:minmax(0,1.75fr) minmax(260px,.75fr)}
  .live-status .live-countdown{margin:10px 0 20px}
  .live-status .live-countdown b{font-size:clamp(64px,7vw,104px)}
  .live-main{padding-left:34px;padding-right:34px}
}
.join-ended-notice{margin:-4px 0 14px}

/* ── 2026-10-16 整体等比放大（大萤幕／电视投影）：倍率由 page-loading.js 算进 --bana-zoom ── */
html.bana-zoomed main.live-shell,
html.bana-zoomed main.teacher-app,
html.bana-zoomed main.app-shell,
html.bana-zoomed .answer-reveal-card,
html.bana-zoomed .slot-machine,
html.bana-zoomed .finishfx-card,
html.bana-zoomed .speedfx-stage,
html.bana-zoomed .rank-board,
html.bana-zoomed #languageChoice > .card{zoom:var(--bana-zoom,1)}

/* 2026-10-16 填写题的其他可接受答案 */
.answer-reveal-also{margin:6px 0 0;color:#2f7a45;font:700 16px "Noto Sans SC",sans-serif}
.student-answer-card .right-answer.also{margin-top:2px;padding-top:0;font-weight:600;color:#5d8a63}