:root{
  --live-bg:#050914;
  --live-panel:#0a1224;
  --live-panel-2:#0e1932;
  --live-cyan:#23e6ff;
  --live-cyan-soft:rgba(35,230,255,.16);
  --live-purple:#bc5cff;
  --live-purple-soft:rgba(188,92,255,.18);
  --live-gold:#f8bd2a;
  --live-gold-soft:rgba(248,189,42,.16);
  --live-green:#49f27e;
  --live-red:#ff5570;
  --live-text:#edf7ff;
  --live-muted:#9fb3c8;
  --live-line:rgba(106,198,255,.22);
  --live-shadow:0 24px 60px rgba(0,0,0,.38);
}
body.live-activity-body,
body.live-teacher-body,
body.live-student-body{
  margin:0;
  min-height:100vh;
  color:var(--live-text);
  background:
    radial-gradient(circle at 12% 8%,rgba(35,230,255,.18),transparent 25rem),
    radial-gradient(circle at 90% 12%,rgba(188,92,255,.18),transparent 27rem),
    radial-gradient(circle at 52% 88%,rgba(248,189,42,.11),transparent 24rem),
    linear-gradient(180deg,#050914,#081326 55%,#050914);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
}
body.live-activity-body::before,
body.live-teacher-body::before,
body.live-student-body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(35,230,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(35,230,255,.045) 1px,transparent 1px);
  background-size:34px 34px;
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),rgba(0,0,0,.16));
}
.live-shell{position:relative;z-index:1;max-width:1320px;margin:0 auto;padding:22px clamp(14px,2.4vw,28px) 56px}
.live-nav{position:sticky;top:12px;z-index:50;display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:18px;padding:10px;border:1px solid var(--live-line);background:rgba(6,13,29,.76);box-shadow:0 18px 44px rgba(0,0,0,.26);backdrop-filter:blur(16px);border-radius:22px}
.live-nav a{color:var(--live-text);text-decoration:none;font-weight:900;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.045);border-radius:14px;padding:10px 13px}
.live-nav a:hover{border-color:rgba(35,230,255,.65);box-shadow:0 0 0 3px rgba(35,230,255,.08)}
.live-brand{display:flex;align-items:center;gap:10px;background:linear-gradient(135deg,rgba(35,230,255,.18),rgba(188,92,255,.12))!important;border-color:rgba(35,230,255,.34)!important}
.live-brand::before{content:"⚡";display:grid;place-items:center;width:30px;height:30px;border-radius:10px;background:rgba(35,230,255,.14);color:var(--live-cyan);box-shadow:0 0 24px rgba(35,230,255,.22)}
.nav-spacer{flex:1 1 auto}
.live-hero{position:relative;overflow:hidden;border:1px solid var(--live-line);border-radius:34px;background:linear-gradient(135deg,rgba(9,20,45,.95),rgba(9,14,31,.92));box-shadow:var(--live-shadow);padding:clamp(24px,4.4vw,54px);margin-bottom:18px}
.live-hero::after{content:"";position:absolute;right:-110px;top:-130px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(35,230,255,.23),rgba(188,92,255,.13) 35%,transparent 67%)}
.live-hero > *{position:relative;z-index:1}
.live-eyebrow{margin:0 0 12px;color:var(--live-cyan);font-size:.78rem;font-weight:950;letter-spacing:.17em;text-transform:uppercase}
.live-hero h1,.live-title-xl{margin:0 0 14px;font-size:clamp(2.5rem,6vw,5.9rem);line-height:.92;letter-spacing:-.075em;color:#fff;text-shadow:0 0 24px rgba(35,230,255,.16)}
.live-hero p,.live-lead{color:#c8d8ec;line-height:1.6;font-size:1.05rem;max-width:940px}
.live-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:18px;align-items:stretch}
.live-card{position:relative;overflow:hidden;background:linear-gradient(180deg,rgba(12,24,49,.92),rgba(8,16,34,.93));border:1px solid var(--live-line);border-radius:26px;padding:22px;box-shadow:0 18px 44px rgba(0,0,0,.24)}
.live-card.light{background:linear-gradient(180deg,rgba(255,255,255,.98),rgba(241,247,255,.97));color:#102033;border-color:#d7e7f9}
.live-card h2,.live-card h3{margin:0 0 10px;color:inherit;letter-spacing:-.03em}.live-card.light p{color:#53647b}.live-card p{color:#b8c8db;line-height:1.55}.live-card::before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;background:linear-gradient(135deg,rgba(35,230,255,.08),transparent 35%,rgba(188,92,255,.08));opacity:.9}
.live-card > *{position:relative;z-index:1}
.live-grid-2{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(330px,.9fr);gap:18px;align-items:start}.live-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.live-grid-auto{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.live-wide{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(370px,.9fr);gap:18px;align-items:start}
.live-btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border:1px solid rgba(255,255,255,.12);border-radius:15px;padding:12px 16px;background:rgba(255,255,255,.06);color:var(--live-text);font-weight:950;font-family:inherit;text-decoration:none;cursor:pointer;box-shadow:0 12px 28px rgba(0,0,0,.18);transition:.16s ease}.live-btn:hover{transform:translateY(-1px);border-color:rgba(35,230,255,.62);box-shadow:0 18px 38px rgba(0,0,0,.24)}.live-btn.gold{background:linear-gradient(135deg,#ffd965,var(--live-gold));color:#16100b;border-color:#ffe08c}.live-btn.cyan{background:linear-gradient(135deg,#2df3ff,#15a8ff);color:#03101e;border-color:#8af7ff}.live-btn.ghost{background:rgba(255,255,255,.045)}.live-btn.soft{background:rgba(35,230,255,.12);border-color:rgba(35,230,255,.28);color:#dffcff}.live-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:18px}
.live-form{display:grid;gap:12px}.live-form label{font-weight:950;color:#dffcff}.live-form input,.live-form textarea,.copy-area,.live-input,.live-select{width:100%;border:1px solid rgba(106,198,255,.26);background:rgba(3,9,22,.82);color:var(--live-text);border-radius:16px;padding:13px;font:inherit;box-shadow:inset 0 0 0 1px rgba(255,255,255,.02)}.live-form textarea{min-height:110px}.copy-area{min-height:138px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px;line-height:1.5;resize:vertical}.live-form input:focus,.live-form textarea:focus,.copy-area:focus,.live-input:focus,.live-select:focus{outline:none;border-color:var(--live-cyan);box-shadow:0 0 0 4px rgba(35,230,255,.12)}
.live-pill-row{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}.live-pill{display:inline-flex;align-items:center;gap:6px;border:1px solid rgba(106,198,255,.24);border-radius:999px;padding:7px 10px;background:rgba(35,230,255,.08);color:#dffcff;font-size:.86rem;font-weight:900}.live-pill.gold{background:var(--live-gold-soft);border-color:rgba(248,189,42,.38);color:#ffe9a7}.live-pill.green{background:rgba(73,242,126,.13);border-color:rgba(73,242,126,.34);color:#caffd9}.live-pill.purple{background:var(--live-purple-soft);border-color:rgba(188,92,255,.38);color:#f0d8ff}.live-pill.red{background:rgba(255,85,112,.13);border-color:rgba(255,85,112,.34);color:#ffd2da}
.safety-strip{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;margin-top:14px;padding:14px;border:1px solid rgba(248,189,42,.32);background:rgba(248,189,42,.10);border-radius:18px;color:#ffeab2}.safety-strip strong{display:block;color:#fff;margin-bottom:3px}.safety-strip p{margin:0;color:#ffe7a6}.safety-strip::before{content:"✓";display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:rgba(248,189,42,.18);color:var(--live-gold);font-weight:950}
.activity-sequence{display:grid;gap:10px;counter-reset:demo}.activity-step{position:relative;padding:14px 14px 14px 54px;border:1px solid rgba(106,198,255,.18);border-radius:18px;background:rgba(255,255,255,.045)}.activity-step::before{counter-increment:demo;content:counter(demo);position:absolute;left:14px;top:14px;width:28px;height:28px;border-radius:10px;display:grid;place-items:center;background:rgba(35,230,255,.13);border:1px solid rgba(35,230,255,.31);color:var(--live-cyan);font-weight:950}.activity-step strong{display:block;color:#fff;margin-bottom:3px}.activity-step span{color:#aec1d5;line-height:1.45}
.result-panel{display:none;margin-top:18px}.result-panel.active{display:block}.class-code-block{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.class-code{font-size:clamp(3rem,6vw,5.6rem);letter-spacing:.13em;font-weight:1000;line-height:1;color:#fff;text-shadow:0 0 22px rgba(35,230,255,.35)}.copy-feedback{font-weight:900;color:#bdf7c9;min-height:1.3em}.activity-meter{height:12px;border-radius:999px;background:rgba(255,255,255,.09);overflow:hidden;border:1px solid rgba(106,198,255,.18)}.activity-meter span{display:block;height:100%;width:67%;border-radius:inherit;background:linear-gradient(90deg,var(--live-cyan),var(--live-purple),var(--live-gold));box-shadow:0 0 18px rgba(35,230,255,.4)}
.target-grid-polished{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:10px}.target-tile{position:relative;min-height:168px;overflow:hidden;border:1px solid rgba(106,198,255,.22);border-radius:20px;background:#071225;box-shadow:0 16px 34px rgba(0,0,0,.24)}.target-tile img{width:100%;height:112px;object-fit:cover;display:block;filter:saturate(1.15) contrast(1.04)}.target-tile div{padding:10px}.target-tile strong{display:block;color:#fff;font-size:.9rem;line-height:1.15}.target-tile span{display:block;margin-top:4px;color:#9eb5cc;font-size:.75rem}.target-tile::after{content:"";position:absolute;inset:0;border-radius:inherit;box-shadow:inset 0 0 0 1px rgba(255,255,255,.04);pointer-events:none}
.live-kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:18px}.live-kpi{position:relative;overflow:hidden;border:1px solid rgba(106,198,255,.22);border-radius:22px;background:linear-gradient(180deg,rgba(13,27,54,.94),rgba(8,16,34,.95));padding:18px}.live-kpi span{display:block;color:#9fb3c8;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;font-weight:950}.live-kpi strong{display:block;color:#fff;font-size:clamp(2rem,4vw,3.2rem);line-height:1;margin-top:5px}.live-kpi small{color:#9fb3c8}.live-kpi.pulse::after{content:"";position:absolute;right:16px;top:16px;width:10px;height:10px;border-radius:50%;background:var(--live-green);box-shadow:0 0 0 0 rgba(73,242,126,.7);animation:pulse 1.6s infinite}@keyframes pulse{to{box-shadow:0 0 0 12px rgba(73,242,126,0)}}
.challenge-matrix{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:9px;margin-bottom:18px}.matrix-card{border:1px solid rgba(106,198,255,.2);border-radius:18px;background:rgba(255,255,255,.045);overflow:hidden}.matrix-card img{width:100%;height:70px;object-fit:cover;display:block;opacity:.88}.matrix-body{padding:9px}.matrix-body strong{display:block;font-size:.82rem;line-height:1.14;color:#fff}.matrix-body span{display:block;margin-top:4px;color:#9fb3c8;font-size:.76rem}.confidence-bar{height:7px;border-radius:999px;background:rgba(255,255,255,.09);overflow:hidden;margin-top:8px}.confidence-bar i{display:block;height:100%;width:0%;background:linear-gradient(90deg,var(--live-red),var(--live-gold),var(--live-green));border-radius:inherit}.matrix-card.active{border-color:rgba(73,242,126,.42);box-shadow:0 0 0 3px rgba(73,242,126,.08)}
.evidence-table-wrap{overflow:auto;border:1px solid rgba(106,198,255,.16);border-radius:20px;background:rgba(0,0,0,.16)}.activity-table{width:100%;border-collapse:collapse;min-width:820px}.activity-table th,.activity-table td{border-bottom:1px solid rgba(106,198,255,.13);padding:12px;text-align:left;vertical-align:top}.activity-table th{color:#8eefff;font-size:.74rem;text-transform:uppercase;letter-spacing:.11em}.activity-table td{color:#d9e8f7}.activity-table tr:hover td{background:rgba(35,230,255,.045)}.confidence-badge{display:inline-flex;align-items:center;border-radius:999px;padding:5px 8px;font-weight:950;font-size:.78rem;background:rgba(248,189,42,.12);border:1px solid rgba(248,189,42,.28);color:#ffe29b}.confidence-badge.high{background:rgba(73,242,126,.12);border-color:rgba(73,242,126,.26);color:#c9ffd8}.confidence-badge.low{background:rgba(255,85,112,.12);border-color:rgba(255,85,112,.26);color:#ffd4dc}
.next-box{min-height:160px;display:grid;gap:10px}.next-empty{white-space:pre-wrap;color:#afc1d4;border:1px dashed rgba(106,198,255,.22);border-radius:18px;padding:16px;background:rgba(255,255,255,.035)}.next-summary{border:1px solid rgba(35,230,255,.25);background:rgba(35,230,255,.07);border-radius:18px;padding:14px;color:#dffcff;line-height:1.5}.next-step-card{display:grid;grid-template-columns:auto 1fr;gap:10px;align-items:start;border:1px solid rgba(248,189,42,.24);background:rgba(248,189,42,.08);border-radius:18px;padding:13px;color:#fff}.next-step-card b{display:grid;place-items:center;width:28px;height:28px;border-radius:10px;background:rgba(248,189,42,.18);color:var(--live-gold)}.safe-note{font-size:.9rem;color:#ffe6a5;border-left:4px solid var(--live-gold);padding:10px 0 10px 12px}
.student-embed-shell{max-width:1260px;margin:0 auto;padding:18px clamp(12px,2vw,24px) 44px}.student-hero{position:relative;overflow:hidden;border:1px solid var(--live-line);background:linear-gradient(135deg,rgba(8,17,37,.95),rgba(10,26,53,.93));border-radius:30px;box-shadow:var(--live-shadow);padding:24px;margin-bottom:14px}.student-hero::after{content:"";position:absolute;right:-40px;top:-60px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(188,92,255,.25),transparent 68%)}.student-hero > *{position:relative;z-index:1}.student-topline{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:space-between}.student-hero h1{font-size:clamp(2.1rem,5vw,4.6rem);line-height:.94;letter-spacing:-.07em;margin:8px 0 10px}.student-controls{display:grid;grid-template-columns:minmax(220px,1fr) 220px auto;gap:10px;margin-top:14px}.student-controls input,.student-controls select{border:1px solid rgba(106,198,255,.27);background:rgba(3,9,22,.72);color:#fff;border-radius:16px;padding:13px;font:inherit}.student-note{display:flex;gap:10px;align-items:flex-start;margin-top:12px;border:1px solid rgba(248,189,42,.28);background:rgba(248,189,42,.09);border-radius:18px;padding:12px;color:#ffe8aa;font-weight:850}.challenge-jump{display:flex;gap:8px;overflow:auto;padding:2px 0 12px;margin-bottom:4px}.challenge-jump a{white-space:nowrap;text-decoration:none;color:#dffcff;border:1px solid rgba(106,198,255,.25);background:rgba(255,255,255,.05);border-radius:999px;padding:8px 10px;font-weight:900;font-size:.86rem}.challenge-jump a.done{background:rgba(73,242,126,.13);border-color:rgba(73,242,126,.36);color:#caffd9}.mission-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.mission-card{overflow:hidden;border:1px solid rgba(106,198,255,.22);border-radius:26px;background:linear-gradient(180deg,rgba(12,24,49,.9),rgba(7,14,31,.95));box-shadow:0 20px 44px rgba(0,0,0,.28)}.mission-card.is-done{border-color:rgba(73,242,126,.42);box-shadow:0 20px 44px rgba(0,0,0,.28),0 0 0 4px rgba(73,242,126,.08)}.mission-image{position:relative;background:#040b18}.mission-image img{width:100%;display:block;aspect-ratio:16/8.7;object-fit:cover}.mission-number{position:absolute;left:14px;top:14px;border-radius:999px;background:rgba(7,12,26,.82);border:1px solid rgba(35,230,255,.35);color:#8ff6ff;font-weight:950;padding:7px 10px}.mission-body{padding:16px}.mission-body h2{margin:6px 0 8px;color:#fff;letter-spacing:-.04em}.mission-body p{color:#b7c7da;line-height:1.5}.mission-body textarea{width:100%;min-height:98px;border:1px solid rgba(106,198,255,.26);background:rgba(3,9,22,.82);color:#fff;border-radius:16px;padding:12px;font:inherit;line-height:1.5}.mission-meta{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}.confidence{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:12px 0;color:#c8d9ec}.confidence label{display:flex;align-items:center;gap:5px;border:1px solid rgba(106,198,255,.18);background:rgba(255,255,255,.04);border-radius:999px;padding:7px 9px;font-weight:900}.confidence input{accent-color:var(--live-gold)}.mission-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.sent{font-weight:950;color:#baf8c7}.char-count{margin-left:auto;color:#94a9bf;font-size:.82rem;font-weight:800}.status-toast{position:fixed;left:50%;bottom:20px;transform:translateX(-50%) translateY(16px);opacity:0;pointer-events:none;background:rgba(8,16,34,.94);border:1px solid rgba(73,242,126,.34);color:#d9ffe2;border-radius:999px;padding:11px 15px;font-weight:950;box-shadow:0 18px 44px rgba(0,0,0,.35);transition:.2s ease;z-index:100}.status-toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media(max-width:1060px){.live-hero-grid,.live-grid-2,.live-wide{grid-template-columns:1fr}.target-grid-polished,.challenge-matrix{grid-template-columns:repeat(2,minmax(0,1fr))}.live-kpis{grid-template-columns:repeat(2,minmax(0,1fr))}.mission-grid{grid-template-columns:1fr}.student-controls{grid-template-columns:1fr}.live-nav{position:static}}
@media(max-width:620px){.live-shell,.student-embed-shell{padding-left:12px;padding-right:12px}.live-hero,.student-hero{border-radius:24px;padding:20px}.target-grid-polished,.challenge-matrix,.live-kpis{grid-template-columns:1fr}.live-actions .live-btn,.student-controls .live-btn{width:100%}.class-code{font-size:3rem}.mission-image img{aspect-ratio:16/10.5}.live-nav a{width:100%;text-align:center}.nav-spacer{display:none}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* v10.0.0 embedded activities polish */
.review-ready-strip{margin-top:18px}.review-card-good{background:linear-gradient(135deg,rgba(10,18,36,.96),rgba(12,34,52,.96));border-color:rgba(73,242,126,.32)}.ia2-status-card{background:linear-gradient(135deg,rgba(10,18,36,.96),rgba(44,32,11,.95));border-color:rgba(248,189,42,.34)}.review-checklist{display:grid;gap:12px;margin-top:14px}.review-checklist div{display:grid;gap:4px;padding:13px 14px;border:1px solid rgba(35,230,255,.18);background:rgba(255,255,255,.045);border-radius:16px}.review-checklist strong{color:#eafcff;font-weight:950}.review-checklist span{color:var(--live-muted);line-height:1.45}.ia2-status-card p{color:var(--live-muted);line-height:1.58}.ia2-status-card .live-actions{margin-top:15px}

/* v10.0.0 playable embedded challenge activities */
.playable-card .mission-image{border-bottom:1px solid rgba(106,198,255,.18)}
.playable-card .play-badge{position:absolute;right:14px;top:14px;border-radius:999px;background:linear-gradient(135deg,#24f0ff,#b95cff);color:#061020;font-weight:1000;padding:7px 10px;border:1px solid rgba(255,255,255,.42);box-shadow:0 12px 24px rgba(0,0,0,.28)}
.live-pill.cyan{background:rgba(35,230,255,.14);border-color:rgba(35,230,255,.34);color:#dffcff}.live-pill.purple{background:rgba(188,92,255,.16);border-color:rgba(188,92,255,.38);color:#f1d8ff}
.play-instruction{border:1px solid rgba(35,230,255,.18);background:rgba(35,230,255,.06);border-radius:16px;padding:11px 12px;margin:12px 0}.activity-stage{margin:14px 0;border:1px solid rgba(106,198,255,.24);background:linear-gradient(180deg,rgba(4,12,28,.78),rgba(7,15,34,.9));border-radius:22px;padding:14px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.025)}
.interactive-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:12px;color:#dffcff}.interactive-head strong{font-weight:950}.interactive-head span{border:1px solid rgba(248,189,42,.34);background:rgba(248,189,42,.11);color:#ffe7a5;border-radius:999px;padding:6px 9px;font-weight:950}.mini-check{display:inline-flex;align-items:center;justify-content:center;margin-top:12px;border:1px solid rgba(248,189,42,.42);background:linear-gradient(135deg,#ffd764,#f7b42c);color:#130d07;border-radius:14px;padding:10px 13px;font-weight:1000;font-family:inherit;cursor:pointer;box-shadow:0 10px 22px rgba(0,0,0,.22)}.mini-check:hover{transform:translateY(-1px);filter:brightness(1.04)}
.evidence-label{display:block;margin:12px 0 6px;font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;color:#8ff6ff;font-weight:950}.activity-evidence{min-height:76px!important;background:rgba(4,10,22,.62)!important;border-style:dashed!important;color:#cfe4f7!important}.activity-evidence::placeholder{color:#7890a8}.mission-card.played{border-color:rgba(248,189,42,.42);box-shadow:0 20px 44px rgba(0,0,0,.28),0 0 0 4px rgba(248,189,42,.08)}.mission-actions .live-btn:disabled{opacity:.55;cursor:not-allowed;filter:grayscale(.3);transform:none;box-shadow:none}
.chip-bank{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.play-chip{border:1px solid rgba(106,198,255,.3);background:rgba(255,255,255,.06);color:#eafcff;border-radius:14px;padding:10px 12px;font-family:inherit;font-weight:950;cursor:grab;box-shadow:0 10px 20px rgba(0,0,0,.18);text-align:left}.play-chip b{display:block;color:#ffdc72;font-size:.72rem;text-transform:uppercase;letter-spacing:.08em}.play-chip:hover,.play-chip.active{border-color:#23e6ff;box-shadow:0 0 0 3px rgba(35,230,255,.12),0 12px 24px rgba(0,0,0,.24)}.play-chip[hidden]{display:none!important}
.ui-play-layout{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(220px,.82fr);gap:12px;align-items:stretch}.ui-hotspot-board{position:relative;min-height:265px;border:1px solid rgba(35,230,255,.25);border-radius:18px;background-size:cover;background-position:center;overflow:hidden;box-shadow:inset 0 0 0 999px rgba(0,6,20,.06)}.ui-hotspot-board::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.02),rgba(0,0,0,.18));pointer-events:none}.ui-zone{position:absolute;z-index:2;transform:translate(-50%,-50%);min-width:44px;min-height:38px;border-radius:14px;border:2px dashed rgba(35,230,255,.76);background:rgba(3,12,28,.74);color:#fff;font-weight:1000;cursor:pointer;box-shadow:0 0 20px rgba(35,230,255,.18)}.ui-zone span{display:grid;place-items:center;margin:0 auto;width:25px;height:25px;border-radius:9px;background:rgba(188,92,255,.76)}.ui-zone.filled{min-width:136px}.ui-zone.filled strong{display:block;font-size:.72rem;line-height:1.15}.ui-zone.correct,.drop-slot.correct{border-color:rgba(73,242,126,.9)!important;background:rgba(73,242,126,.18)!important}.ui-zone.incorrect,.drop-slot.incorrect{border-color:rgba(255,85,112,.9)!important;background:rgba(255,85,112,.15)!important}.drag-over{box-shadow:0 0 0 4px rgba(35,230,255,.18)!important}.issue-bank{align-content:start;max-height:265px;overflow:auto;padding-right:2px}
.field-fixer-table{display:grid;gap:8px;overflow:auto}.field-row{display:grid;grid-template-columns:minmax(140px,1.25fr) repeat(3,minmax(96px,.8fr));gap:8px;align-items:center;border:1px solid rgba(106,198,255,.16);background:rgba(255,255,255,.045);border-radius:14px;padding:8px}.field-row.header{background:rgba(35,230,255,.08);color:#8ff6ff;text-transform:uppercase;font-size:.75rem;letter-spacing:.08em;font-weight:1000}.field-row small{display:block;color:#95a9be;margin-top:2px;line-height:1.25}.field-row select,.cipher-row input,.trace-table-mini input{border:1px solid rgba(106,198,255,.24);background:rgba(2,8,20,.72);color:#fff;border-radius:11px;padding:9px;font:inherit;font-weight:800}.field-row.correct{border-color:rgba(73,242,126,.4);background:rgba(73,242,126,.08)}.field-row.partial{border-color:rgba(248,189,42,.34);background:rgba(248,189,42,.06)}
.drop-builder{display:grid;gap:12px}.drop-slots{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.drop-slot-card{border:1px solid rgba(106,198,255,.18);background:rgba(255,255,255,.04);border-radius:16px;padding:10px}.drop-slot-card small,.drop-slot-card em{display:block;color:#a9bad0;margin-bottom:7px}.drop-slot-card em{color:#ffdc72;font-style:normal;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em}.drop-slot{width:100%;min-height:50px;border:2px dashed rgba(35,230,255,.45);background:rgba(3,9,22,.65);color:#bfeeff;border-radius:13px;font-family:inherit;font-weight:950;cursor:pointer}.drop-slot.filled{border-style:solid;color:#fff}.drop-slot strong{display:block;color:#fff}
.key-builder,.shift-preview{display:grid;gap:8px;border:1px solid rgba(188,92,255,.24);background:rgba(188,92,255,.08);border-radius:16px;padding:12px;margin-bottom:12px}.key-display{min-height:38px;border:1px solid rgba(106,198,255,.22);background:rgba(0,0,0,.2);border-radius:12px;padding:8px 10px;font-size:1.25rem;font-weight:1000;color:#fff;letter-spacing:.08em}.num-pad{display:flex;gap:6px;flex-wrap:wrap}.num-pad button{border:1px solid rgba(35,230,255,.28);background:rgba(255,255,255,.06);color:#fff;border-radius:11px;padding:8px 10px;font-weight:1000;cursor:pointer}.cipher-rows{display:grid;gap:9px}.cipher-row{display:grid;grid-template-columns:auto minmax(100px,.7fr) minmax(130px,1fr);gap:9px;align-items:center;border:1px solid rgba(106,198,255,.16);background:rgba(255,255,255,.04);border-radius:15px;padding:9px}.cipher-number{display:grid;place-items:center;width:32px;height:32px;border-radius:11px;background:rgba(188,92,255,.18);border:1px solid rgba(188,92,255,.32);font-weight:1000}.cipher-row strong{letter-spacing:.08em}.cipher-row input.correct,.trace-table-mini input.correct{border-color:rgba(73,242,126,.76);background:rgba(73,242,126,.12)}.cipher-row input.incorrect,.trace-table-mini input.incorrect{border-color:rgba(255,85,112,.76);background:rgba(255,85,112,.12)}
.trace-table-mini{overflow:auto;border:1px solid rgba(106,198,255,.16);border-radius:17px}.trace-table-mini table{width:100%;border-collapse:collapse;min-width:650px;background:rgba(0,0,0,.1)}.trace-table-mini th,.trace-table-mini td{padding:9px;border-bottom:1px solid rgba(106,198,255,.14);text-align:center}.trace-table-mini th{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:#8ff6ff}.trace-table-mini td:nth-child(2){text-align:left}.trace-table-mini input{width:82px;text-align:center;padding:7px}
@media(max-width:780px){.ui-play-layout{grid-template-columns:1fr}.ui-hotspot-board{min-height:220px}.drop-slots{grid-template-columns:1fr}.field-row{grid-template-columns:1fr}.field-row.header{display:none}.cipher-row{grid-template-columns:1fr}.mission-body{padding:14px}.play-chip{width:100%}}

/* v10 product naming aliases */
body.live-activity-body{margin:0;min-height:100vh;color:var(--live-text);background:radial-gradient(circle at 12% 8%,rgba(35,230,255,.18),transparent 25rem),radial-gradient(circle at 90% 12%,rgba(188,92,255,.18),transparent 27rem),radial-gradient(circle at 52% 88%,rgba(248,189,42,.11),transparent 24rem),linear-gradient(180deg,#050914,#081326 55%,#050914);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}
body.live-activity-body::before{content:"";position:fixed;inset:0;pointer-events:none;background-image:linear-gradient(rgba(35,230,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(35,230,255,.045) 1px,transparent 1px);background-size:34px 34px;mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),rgba(0,0,0,.16))}
.activity-sequence{display:grid;gap:10px;counter-reset:activity}.activity-step{position:relative;padding:14px 14px 14px 54px;border:1px solid rgba(106,198,255,.18);border-radius:18px;background:rgba(255,255,255,.045)}.activity-step::before{counter-increment:activity;content:counter(activity);position:absolute;left:14px;top:14px;width:28px;height:28px;border-radius:10px;display:grid;place-items:center;background:rgba(35,230,255,.13);border:1px solid rgba(35,230,255,.31);color:var(--live-cyan);font-weight:950}.activity-step strong{display:block;color:#fff;margin-bottom:3px}.activity-step span{color:#aec1d5;line-height:1.45}
.activity-meter{height:12px;border-radius:999px;background:rgba(255,255,255,.09);overflow:hidden;border:1px solid rgba(106,198,255,.18)}.activity-meter span{display:block;height:100%;width:67%;border-radius:inherit;background:linear-gradient(90deg,var(--live-cyan),var(--live-purple),var(--live-gold));box-shadow:0 0 18px rgba(35,230,255,.4)}
.activity-table{width:100%;border-collapse:collapse;min-width:820px}.activity-table th,.activity-table td{border-bottom:1px solid rgba(106,198,255,.13);padding:12px;text-align:left;vertical-align:top}.activity-table th{color:#8eefff;font-size:.74rem;text-transform:uppercase;letter-spacing:.11em}.activity-table td{color:#d9e8f7}.activity-table tr:hover td{background:rgba(35,230,255,.045)}
.standalone-activity-card{max-width:1100px;margin:18px auto}.standalone-stage{min-height:280px}.interactive-loading{padding:14px;border:1px dashed rgba(35,230,255,.35);border-radius:14px;color:#dffcff;background:rgba(35,230,255,.08)}
.activity-first-card .activity-stage{margin-top:16px}.stimulus-details{margin:12px 0;border:1px solid rgba(106,198,255,.18);border-radius:16px;background:rgba(255,255,255,.035);overflow:hidden}.stimulus-details summary{cursor:pointer;padding:11px 13px;font-weight:950;color:#dffcff}.compact-stimulus img{max-height:260px;object-fit:cover}.activity-first-card .mission-image{border-top:1px solid rgba(106,198,255,.16)}
/* v10.2.0 polished live activity product layer */
.activity-card-head{display:flex;gap:14px;align-items:flex-start;justify-content:space-between;margin-bottom:12px}.activity-number-badge{width:46px;height:46px;border-radius:16px;background:#f6c642;color:#13233a;font-weight:900;display:grid;place-items:center;box-shadow:0 8px 18px rgba(15,23,42,.16)}.activity-title-icon{display:inline-grid;place-items:center;min-width:38px;height:38px;border-radius:13px;background:#e8f4ff;color:#0f375f;margin-right:10px;font-size:.85em}.true-interactive-card .mission-body{width:100%}.activity-stage{border:1px solid rgba(15,23,42,.12);border-radius:22px;padding:18px;background:linear-gradient(180deg,#fff,#f7fbff);box-shadow:inset 0 1px 0 rgba(255,255,255,.85);margin:14px 0}.interactive-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.interactive-head span{background:#0f2742;color:#fff;border-radius:999px;padding:8px 12px;font-weight:800}.mini-check{border:0;border-radius:14px;background:#16395f;color:#fff;font-weight:900;padding:12px 16px;margin-top:14px;cursor:pointer}.mini-check:hover{filter:brightness(1.08)}.play-chip{border:1px solid rgba(15,23,42,.16);background:#fff;border-radius:14px;padding:10px 12px;text-align:left;cursor:pointer;font-weight:750;box-shadow:0 6px 16px rgba(15,23,42,.08)}.play-chip.active{outline:3px solid #f6c642;background:#fff9df}.play-chip[hidden]{display:none}.chip-bank{display:flex;flex-wrap:wrap;gap:10px;align-content:flex-start}.drop-slot{min-height:48px;border:2px dashed #9db1c7;background:#f6f9fc;border-radius:14px;width:100%;padding:10px;cursor:pointer;color:#18324d}.drop-slot.filled{border-style:solid;background:#eef6ff}.drop-slot.drag-over{background:#fff6d8}.drop-slot.correct,select.correct,input.correct{border-color:#1d9a5f!important;background:#eafff3!important}.drop-slot.incorrect,select.incorrect,input.incorrect{border-color:#d64545!important;background:#fff0f0!important}.ui-builder-shell{display:grid;grid-template-columns:minmax(280px,1fr) minmax(320px,1fr);gap:18px}.fake-app-preview{background:#eef3f9;border:1px solid #ced9e7;border-radius:22px;padding:18px;display:grid;gap:14px}.fake-nav{display:flex;gap:8px}.fake-nav button,.fake-app-preview label,.weak-primary,.status-weak{border:2px solid transparent;border-radius:14px;padding:12px;background:white;box-shadow:0 6px 14px rgba(15,23,42,.08)}.fake-app-preview input{display:block;margin-top:8px;width:100%;padding:10px;border-radius:10px;border:1px solid #b8c5d6}.weak-primary{background:#d9dce3;color:#6b7280;text-align:center}.status-weak{min-height:45px;background:#fff}.selected-component{border-color:#f6c642!important;box-shadow:0 0 0 4px rgba(246,198,66,.22)}.ui-fix-panel{display:grid;gap:10px}.fix-row{display:grid;grid-template-columns:1fr 1.2fr;gap:10px;align-items:center;background:#fff;border:1px solid #d8e1ec;border-radius:16px;padding:12px}.fix-row small{display:block;color:#61738a;margin-top:4px}.fix-row select,.field-row select,.mini-explain select{width:100%;padding:10px;border-radius:12px;border:1px solid #b8c5d6;background:#fff}.field-fixer-table{display:grid;gap:8px}.field-row{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:8px;align-items:center;background:#fff;border:1px solid #d8e1ec;border-radius:16px;padding:10px}.field-row.header{font-weight:900;background:#10233c;color:#fff}.field-row small{display:block;color:#61738a}.field-row.correct{border-color:#1d9a5f;background:#eefff6}.field-row.partial{border-color:#f0b429;background:#fff9e8}.dfd-board{display:grid;grid-template-columns:1fr .8fr 1fr 1fr;gap:12px;align-items:center;background:#f1f7ff;border-radius:22px;padding:18px;margin-bottom:16px}.dfd-node,.dfd-store,.dfd-flow{border-radius:16px;padding:14px;text-align:center;font-weight:900}.dfd-node{border:2px solid #16395f;background:#fff}.dfd-node.process{border-radius:50px;background:#e8f4ff}.dfd-store{border:3px double #16395f;background:#fff}.dfd-flow.bad{border:2px dashed #d64545;color:#9b1c1c;background:#fff0f0}.dfd-node.inside{outline:3px dashed #d64545}.drop-builder{display:grid;grid-template-columns:1.2fr .8fr;gap:16px}.drop-slots{display:grid;gap:10px}.drop-slot-card{display:grid;gap:6px;background:#fff;border:1px solid #d8e1ec;border-radius:16px;padding:12px}.drop-slot-card small{font-weight:800;color:#43546a}.pseudo-builder{display:grid;grid-template-columns:1fr .95fr;gap:16px}.pseudo-program{background:#101827;color:#e5f0ff;border-radius:20px;padding:16px;display:grid;gap:8px;font-family:ui-monospace,Consolas,monospace}.fixed-line{padding:10px;border-radius:10px;background:#1d2b44;font-weight:900}.code-slot{font-family:ui-monospace,Consolas,monospace;text-align:left;background:#17233a;color:#fff;border-color:#56708d}.code-slot span{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:8px;background:#f6c642;color:#13233a;margin-right:8px}.code-bank{align-content:start}.code-chip{font-family:ui-monospace,Consolas,monospace;width:100%}.mini-explain{display:grid;gap:8px;margin-top:14px;font-weight:850}.trace-table-mini{overflow:auto}.trace-table-mini table{width:100%;border-collapse:separate;border-spacing:0 7px}.trace-table-mini th{background:#10233c;color:#fff;padding:10px}.trace-table-mini td{background:#fff;padding:8px;border-top:1px solid #d8e1ec;border-bottom:1px solid #d8e1ec}.trace-table-mini input{width:88px;padding:8px;border-radius:10px;border:1px solid #b8c5d6}.json-sql-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:16px}.json-card{background:#101827;color:#dff5ff;border-radius:18px;padding:16px;font-size:15px;overflow:auto}.sql-table-mini{display:grid;gap:8px}.sql-row{display:grid;grid-template-columns:1fr 1.15fr;gap:10px;align-items:center;background:#fff;border:1px solid #d8e1ec;border-radius:16px;padding:10px}.sql-row small{display:block;color:#61738a}.key-builder{display:grid;gap:10px;background:#fff;border:1px solid #d8e1ec;border-radius:18px;padding:14px;margin-bottom:14px}.key-display{min-height:44px;border-radius:14px;background:#f7fbff;border:1px dashed #9db1c7;padding:12px;font-size:22px;font-weight:900;letter-spacing:6px}.num-pad{display:flex;flex-wrap:wrap;gap:8px}.num-pad button{border:0;border-radius:12px;background:#16395f;color:#fff;padding:10px 13px;font-weight:900;cursor:pointer}.cipher-rows{display:grid;gap:10px}.cipher-row{display:grid;grid-template-columns:42px 1fr 1.3fr;gap:10px;align-items:center;background:#fff;border:1px solid #d8e1ec;border-radius:16px;padding:10px}.cipher-number{display:grid;place-items:center;border-radius:12px;background:#f6c642;color:#13233a;font-weight:900}.cipher-row input{padding:10px;border-radius:12px;border:1px solid #b8c5d6}.join-callout{margin:16px 0;padding:14px;border-radius:18px;background:#eff7ff;border:1px solid #cfe4ff;display:flex;gap:12px;align-items:center;flex-wrap:wrap}.join-callout span{font-weight:900;color:#52677f}.join-callout strong{font-size:1.05rem}.class-code-card .class-code{font-size:4rem}.activity-tile-noimage,.matrix-card{display:grid!important;grid-template-columns:58px 1fr;gap:12px;align-items:center}.activity-icon-big,.matrix-icon{width:54px;height:54px;border-radius:18px;background:#e8f4ff;color:#0f375f;display:grid;place-items:center;font-weight:1000;font-size:1.15rem}.matrix-card{background:#fff;border:1px solid #d8e1ec;border-radius:18px;padding:12px}.matrix-card.active{border-color:#1d9a5f;background:#f1fff7}.matrix-body strong{display:block}.confidence-bar{height:9px;background:#e7edf5;border-radius:999px;overflow:hidden;margin-top:8px}.confidence-bar i{display:block;height:100%;background:#f6c642}.student-join-body{min-height:100vh;background:radial-gradient(circle at top left,#fff4ce,#edf6ff 38%,#eaf0f8)}.join-shell{max-width:980px;margin:0 auto;padding:36px 18px}.join-card{background:#fff;border:1px solid #d8e1ec;border-radius:28px;padding:28px;box-shadow:0 20px 60px rgba(15,23,42,.16)}.join-card h1{font-size:clamp(2.2rem,5vw,4rem);margin:.2em 0}.join-form{display:grid;grid-template-columns:1fr 1fr auto;gap:12px;margin-top:20px}.join-form input{padding:16px;border-radius:16px;border:1px solid #9db1c7;font-size:1.05rem}.join-note{margin-top:16px;color:#52677f}.activity-library-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:18px}.activity-product-card{background:#fff;border:1px solid #d8e1ec;border-radius:24px;padding:18px;box-shadow:0 12px 30px rgba(15,23,42,.08)}.activity-product-card .activity-icon-big{margin-bottom:12px}.disabled-link{pointer-events:none;opacity:.5}@media(max-width:850px){.ui-builder-shell,.drop-builder,.pseudo-builder,.json-sql-layout,.field-row,.join-form{grid-template-columns:1fr}.dfd-board{grid-template-columns:1fr}.activity-card-head{display:grid}.class-code-card .class-code{font-size:3rem}}

/* v10.2.0 final product polish */
.product-topbar{box-shadow:0 18px 45px rgba(15,23,42,.12)}
.product-hero{border:1px solid rgba(15,65,120,.14);background:linear-gradient(135deg,#ffffff,#eef7ff 58%,#fff7d9);box-shadow:0 26px 70px rgba(15,23,42,.12)}
.product-proof-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}.product-proof-row span{border:1px solid #cfe1f5;background:#fff;border-radius:999px;padding:9px 12px;font-weight:900;color:#24415f;box-shadow:0 8px 18px rgba(15,23,42,.06)}
.teacher-product-hero{min-height:430px;align-items:center}.teacher-product-hero h1{max-width:880px}.flow-card-polished,.setup-card-polished,.board-instruction-card,.result-card-polished,.activity-set-card{box-shadow:0 26px 70px rgba(0,0,0,.28)}
.board-instruction-card h2,.setup-card-polished h2{font-size:clamp(1.8rem,3vw,2.45rem)}.join-callout-large{align-items:center;justify-content:space-between}.join-callout-large strong{font-size:clamp(1.25rem,2.4vw,1.85rem);letter-spacing:-.03em}
.result-card-polished{border-color:rgba(248,189,42,.38);background:linear-gradient(135deg,rgba(21,38,71,.97),rgba(10,20,42,.97))}.result-card-polished .class-code{font-size:clamp(4rem,9vw,8rem)}
.student-embed-shell{position:relative;z-index:1;max-width:1180px;margin:0 auto;padding:22px clamp(12px,2.4vw,26px) 50px}.student-hero{border:1px solid var(--live-line);border-radius:30px;background:linear-gradient(135deg,rgba(12,24,49,.96),rgba(8,16,34,.94));box-shadow:0 24px 60px rgba(0,0,0,.32);padding:clamp(22px,4vw,40px);margin-bottom:14px}.student-hero h1{margin:0 0 10px;font-size:clamp(2.4rem,6vw,5rem);letter-spacing:-.06em;line-height:.96}.student-topline{display:flex;justify-content:space-between;gap:12px;align-items:center;flex-wrap:wrap}.student-controls{display:grid;grid-template-columns:minmax(180px,1fr) minmax(210px,.8fr) auto;gap:10px;margin-top:16px}.student-controls input,.student-controls select{border:1px solid rgba(106,198,255,.28);background:rgba(3,9,22,.78);color:#fff;border-radius:16px;padding:14px;font:inherit}.student-note{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:14px;padding:12px 14px;border:1px solid rgba(73,242,126,.26);background:rgba(73,242,126,.10);border-radius:16px;color:#d7ffe2}.student-note strong{color:#fff}
.challenge-jump{position:sticky;top:10px;z-index:30;display:flex;gap:8px;overflow:auto;padding:10px;margin-bottom:14px;border:1px solid rgba(106,198,255,.22);border-radius:20px;background:rgba(5,11,24,.86);backdrop-filter:blur(16px);box-shadow:0 15px 36px rgba(0,0,0,.24)}.challenge-jump a{display:flex;align-items:center;gap:8px;white-space:nowrap;color:#eaf7ff;text-decoration:none;font-weight:900;border:1px solid rgba(255,255,255,.09);background:rgba(255,255,255,.055);border-radius:14px;padding:10px 12px}.challenge-jump a span{display:grid;place-items:center;width:26px;height:26px;border-radius:9px;background:rgba(35,230,255,.14);color:#9ff8ff}.challenge-jump a.done{background:rgba(73,242,126,.12);border-color:rgba(73,242,126,.38)}
.mission-grid{display:grid;gap:18px}.mission-card{border:1px solid rgba(106,198,255,.23);border-radius:30px;background:linear-gradient(180deg,rgba(13,27,54,.96),rgba(7,15,32,.96));box-shadow:0 24px 55px rgba(0,0,0,.28);overflow:hidden}.mission-body{padding:clamp(18px,3vw,28px)}.activity-card-head{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;margin-bottom:12px}.activity-number-badge{display:grid;place-items:center;width:58px;height:58px;border-radius:20px;background:linear-gradient(135deg,var(--live-cyan),#168dff);color:#03101f;font-size:1.45rem;font-weight:1000;box-shadow:0 18px 34px rgba(35,230,255,.22)}.activity-title-icon{margin-right:10px;color:#f9c12e}.mission-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}.play-instruction{margin:14px 0;padding:14px 16px;border-radius:18px;background:rgba(255,255,255,.065);border:1px solid rgba(255,255,255,.09);color:#d6e4f5}.activity-stage{border:1px solid #d8e1ec;border-radius:24px;background:#f8fbff;color:#102033;padding:clamp(14px,2.5vw,22px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.8),0 18px 36px rgba(15,23,42,.14)}.interactive-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}.interactive-head strong{color:#102033}.interactive-head span{background:#10233c;color:#fff;border-radius:999px;padding:8px 11px;font-weight:950}.evidence-label{display:block;margin:16px 0 8px;font-weight:950;color:#e8f8ff}.activity-evidence{width:100%;min-height:92px;border:1px solid rgba(106,198,255,.28);background:rgba(3,9,22,.84);color:#eaf7ff;border-radius:18px;padding:14px;font:inherit;resize:vertical}.confidence{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:12px}.confidence span{font-weight:950;color:#f4fbff}.confidence label{display:inline-flex;align-items:center;gap:5px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.06);border-radius:999px;padding:8px 10px;color:#fff;font-weight:900}.mission-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:14px}.sent{font-weight:950;color:#bafad0}.char-count{margin-left:auto;color:#a9bed5;font-weight:800}.mission-card.is-done{border-color:rgba(73,242,126,.55);box-shadow:0 0 0 4px rgba(73,242,126,.09),0 24px 55px rgba(0,0,0,.25)}.mission-card.is-done .activity-number-badge{background:linear-gradient(135deg,#49f27e,#b6ff68)}
.field-row select,.fix-row select,.mini-explain select,.trace-table-mini input,.cipher-row input{transition:.15s ease}.mini-check{margin-top:14px}.mini-check:focus,.play-chip:focus,.drop-slot:focus,.live-btn:focus,.join-form input:focus{outline:3px solid rgba(248,189,42,.45);outline-offset:2px}.drop-slot.correct,.play-chip.correct{animation:pulseCorrect .5s ease}@keyframes pulseCorrect{0%{transform:scale(.98)}60%{transform:scale(1.02)}100%{transform:scale(1)}}
.dashboard-command-row{margin-bottom:18px}.dashboard-matrix-card,.dashboard-feed-card{margin-bottom:18px}.activity-table{width:100%;border-collapse:separate;border-spacing:0 8px}.activity-table th{padding:12px;background:#10233c;color:#fff;text-align:left;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em}.activity-table td{padding:12px;background:rgba(255,255,255,.95);color:#102033;border-top:1px solid #d8e1ec;border-bottom:1px solid #d8e1ec}.activity-table tr td:first-child{border-left:1px solid #d8e1ec;border-radius:14px 0 0 14px}.activity-table tr td:last-child{border-right:1px solid #d8e1ec;border-radius:0 14px 14px 0}.challenge-matrix{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px}.matrix-card{transition:.16s ease}.matrix-card.active{transform:translateY(-2px);box-shadow:0 14px 26px rgba(29,154,95,.12)}.next-box{margin-top:14px}.next-card{border:1px solid rgba(106,198,255,.22);border-radius:18px;background:rgba(255,255,255,.06);padding:14px;margin-bottom:10px}.next-card h3{margin:0 0 8px;color:#fff}.next-card li{margin:6px 0;color:#c8d8ec}.next-empty{color:#a9bed5;padding:14px;border:1px dashed rgba(106,198,255,.24);border-radius:16px}
.join-product-body{background:radial-gradient(circle at 15% 12%,#fff2c3,transparent 28rem),radial-gradient(circle at 88% 8%,#dff5ff,transparent 30rem),linear-gradient(135deg,#f8fbff,#eaf0f8)}.join-product-card{padding:clamp(22px,4vw,44px);border-radius:34px}.join-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:center}.join-product-card h1{font-size:clamp(3rem,7vw,5.8rem);line-height:.9;letter-spacing:-.075em;margin:8px 0 16px}.join-form-polished{grid-template-columns:1fr 1fr auto;align-items:end}.join-form-polished label{display:grid;gap:7px;font-weight:950;color:#253d59}.join-form-polished input{text-transform:none}.join-form-polished #classCode{text-transform:uppercase;letter-spacing:.12em;font-weight:1000}.join-submit{min-height:56px}.join-preview-panel{border:1px solid #d9e6f4;border-radius:28px;background:linear-gradient(180deg,#10233c,#132d50);color:#fff;padding:22px;box-shadow:0 20px 48px rgba(15,23,42,.22)}.join-code-visual{font-size:4rem;font-weight:1000;letter-spacing:.13em;color:#f8bd2a;text-align:center;margin:10px 0 20px}.join-preview-steps{display:grid;gap:10px}.join-preview-steps span{border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.07);border-radius:14px;padding:12px;font-weight:900}
.activity-library-body{background:#f6f9fd}.activity-library-hero h1{font-size:clamp(3rem,7vw,6rem);letter-spacing:-.08em}.polished-product-card{position:relative;overflow:hidden;transition:.18s ease}.polished-product-card:hover{transform:translateY(-4px);box-shadow:0 22px 45px rgba(15,23,42,.13)}.activity-card-topline{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.activity-number-pill{border-radius:999px;background:#10233c;color:#fff;padding:7px 10px;font-weight:950}.mini-feature-row{display:flex;gap:6px;flex-wrap:wrap;margin:12px 0}.mini-feature-row span{border-radius:999px;background:#eef6ff;border:1px solid #d5e6f7;color:#28445f;padding:6px 8px;font-size:.78rem;font-weight:900}.activity-product-card code{display:block;margin-top:12px;padding:10px;background:#f6f8fb;border:1px solid #dbe5ef;border-radius:12px;max-height:86px;overflow:auto;font-size:11px;color:#334155}
.standalone-product-hero{margin-top:10px}.standalone-task-divider{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 14px}.standalone-task-divider span{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:8px 11px;background:rgba(35,230,255,.10);border:1px solid rgba(35,230,255,.25);font-weight:950;color:#dffcff}.standalone-task-divider span::before{content:"✓";color:#49f27e}
@media(max-width:950px){.live-hero-grid,.live-grid-2,.live-wide,.join-hero-grid,.student-controls,.join-form-polished{grid-template-columns:1fr}.char-count{margin-left:0}.activity-card-head{grid-template-columns:auto 1fr}.activity-card-head .live-pill{grid-column:1/-1;width:max-content}.target-grid-polished{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}.join-code-visual{text-align:left;font-size:3rem}}

/* v10.3.0 hard guard: live student activities must not render the retired screenshot cards. */
body.live-student-body .mission-image,
body.live-student-body .mission-image img,
body.live-student-body .play-badge,
body.live-student-body .compact-stimulus {
  display: none !important;
}
body.live-student-body .true-interactive-card .activity-stage {
  min-height: 260px;
  border: 1px solid rgba(35,230,255,.22);
  border-radius: 18px;
  background: rgba(3,9,22,.72);
  padding: 14px;
}

/* v10.4.0 clarity and live-session polish */
body.live-activity-body,
body.live-teacher-body,
body.live-student-body{
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  background:
    radial-gradient(circle at 8% 8%, rgba(14,165,233,.20), transparent 28rem),
    radial-gradient(circle at 92% 8%, rgba(124,58,237,.18), transparent 30rem),
    linear-gradient(180deg, #07111f 0%, #081226 48%, #050914 100%);
}
.live-shell{max-width:1440px}.live-nav{margin-bottom:24px}.live-nav a{font-size:.96rem;letter-spacing:.01em}.live-brand{min-width:170px}
.teacher-product-hero .live-title-xl,
.live-teacher-body .live-hero h1,
.teacher-activity-product-body .live-hero h1{
  font-size:clamp(3.2rem,7.2vw,6.1rem);
  max-width:850px;
  letter-spacing:-.075em;
}
.live-teacher-body .live-hero-grid,
.teacher-activity-product-body .live-hero-grid{grid-template-columns:minmax(0,1.35fr) minmax(340px,.65fr)}
.class-code{font-size:clamp(3.2rem,7vw,5.6rem)}
.class-code-card .class-code{font-size:clamp(3.8rem,7.5vw,6.8rem)}
.join-callout{display:grid;gap:8px;padding:16px;border:1px solid rgba(35,230,255,.24);background:rgba(35,230,255,.08);border-radius:18px;margin-top:16px}
.join-callout span{color:#a8c9df;font-weight:900;text-transform:uppercase;letter-spacing:.11em;font-size:.75rem}
.join-callout strong{display:block;color:#eefaff;font-size:.95rem;line-height:1.35;word-break:break-all;overflow-wrap:anywhere;font-weight:850;letter-spacing:0;text-shadow:none}
.join-callout-large strong{font-size:1rem;letter-spacing:0;max-width:100%}
.copy-area{background:#f8fbff;color:#0f172a;border-color:#cbd5e1}.copy-area::selection{background:#bfdbfe}
.live-card p,.live-lead{font-weight:500}.live-eyebrow{color:#67e8f9}.live-pill{font-weight:850}.live-btn{font-weight:900}
.active-session-card{margin:0 0 18px}.active-session-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;flex-wrap:wrap}.active-session-head h2{font-size:clamp(1.8rem,3vw,2.6rem)}.active-session-list{display:grid;gap:10px;margin-top:16px}.session-empty{padding:16px;border:1px dashed rgba(148,163,184,.35);border-radius:18px;color:#cbd5e1;background:rgba(255,255,255,.045)}.session-row{display:grid;grid-template-columns:130px minmax(0,1fr) auto;gap:14px;align-items:center;padding:14px;border:1px solid rgba(106,198,255,.22);border-radius:20px;background:rgba(255,255,255,.055)}.session-code{font-size:1.45rem;font-weight:1000;letter-spacing:.12em;color:#f8bd2a}.session-main strong{display:block;color:#fff;font-size:1.05rem}.session-main span{display:block;color:#aebfd3;margin-top:4px}.session-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.session-actions .live-btn{padding:9px 11px;border-radius:12px;font-size:.88rem}
/* Make the actual playable areas readable. The old dark override made student tasks look disabled. */
body.live-student-body .true-interactive-card .activity-stage,
.activity-stage{
  min-height:260px;
  border:1px solid #cbd5e1;
  border-radius:22px;
  background:linear-gradient(180deg,#ffffff 0%,#f1f7ff 100%) !important;
  color:#0f172a !important;
  padding:18px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.88),0 18px 36px rgba(15,23,42,.14);
}
.activity-stage h1,.activity-stage h2,.activity-stage h3,.activity-stage h4,.activity-stage p,.activity-stage strong,.activity-stage span,.activity-stage small,.activity-stage label,.activity-stage th,.activity-stage td{color:#0f172a}
.activity-stage .interactive-head strong{color:#0f172a;font-weight:900}.activity-stage .interactive-head span{background:#0f172a;color:#fff}
.play-chip,.drop-slot,.mini-check,.field-row select,.fix-row select,.mini-explain select,.trace-table-mini input,.cipher-row input,.key-builder button,.num-pad button{
  background:#ffffff;color:#0f172a;border:1px solid #cbd5e1;border-radius:12px;font-weight:850;
}
.play-chip:hover,.drop-slot:hover,.key-builder button:hover,.num-pad button:hover{border-color:#0ea5e9;box-shadow:0 0 0 3px rgba(14,165,233,.12)}
.play-chip.active{background:#dbeafe;border-color:#0ea5e9}.drop-slot.filled{background:#e0f2fe;border-color:#38bdf8}.drop-slot.correct,.field-row.correct,.fix-row.correct,.trace-table-mini input.correct,.cipher-row input.correct{background:#dcfce7!important;border-color:#22c55e!important}.drop-slot.incorrect,.field-row.partial,.fix-row.partial,.trace-table-mini input.incorrect,.cipher-row input.incorrect{background:#fef3c7!important;border-color:#f59e0b!important}.field-fixer-table,.trace-table-mini table{background:#fff;border-radius:16px;overflow:hidden}.trace-table-mini table{width:100%;border-collapse:collapse}.trace-table-mini th{background:#0f172a;color:#fff}.trace-table-mini td,.trace-table-mini th{padding:10px;border:1px solid #e2e8f0}.json-card{background:#0f172a;color:#e2f6ff;border-radius:16px;padding:16px}.fake-app-preview{background:#ffffff;color:#0f172a;border:1px solid #cbd5e1;border-radius:18px;padding:16px}.fake-app-preview button,.fake-app-preview input{color:#0f172a}.ui-fix-panel,.drop-builder,.json-sql-layout,.key-builder,.cipher-rows{color:#0f172a}.activity-evidence{background:#0f172a;color:#eaf7ff;border-color:rgba(106,198,255,.36)}
.activity-card-head{gap:18px}.mission-card{border-color:rgba(35,230,255,.28)}.mission-card .live-eyebrow{color:#8eeaff}.activity-number-badge{box-shadow:0 16px 30px rgba(35,230,255,.2)}.play-instruction{font-size:1.02rem}.student-hero h1{font-size:clamp(2.6rem,6vw,5.2rem)}
.target-tile.activity-tile-noimage{display:grid;grid-template-rows:auto 1fr;min-height:190px;padding:18px;background:linear-gradient(180deg,rgba(13,27,54,.96),rgba(7,15,32,.96))}.target-tile.activity-tile-noimage img{display:none}.activity-icon-big{display:grid;place-items:center;width:64px;height:64px;border-radius:20px;background:rgba(35,230,255,.14);border:1px solid rgba(35,230,255,.32);font-size:1.65rem;color:#67e8f9;font-weight:1000}.target-tile.activity-tile-noimage div:last-child{padding:0;margin-top:12px}.target-tile.activity-tile-noimage strong{font-size:1rem}.target-tile.activity-tile-noimage span{font-size:.85rem;line-height:1.35}
@media(max-width:980px){.session-row{grid-template-columns:1fr}.session-actions{justify-content:flex-start}.live-teacher-body .live-hero-grid,.teacher-activity-product-body .live-hero-grid{grid-template-columns:1fr}.teacher-product-hero .live-title-xl,.live-teacher-body .live-hero h1,.teacher-activity-product-body .live-hero h1{font-size:clamp(2.6rem,12vw,4.5rem)}}