/* 99 Club Studio · Balance Lab v1.92 */
.tt99-balance-lab{display:grid;gap:14px;width:min(100%,800px);margin-inline:auto}
.tt99-balance-lab-mission{display:grid;gap:3px;padding:12px 14px;border:1px solid #cfe0de;border-radius:14px;background:#f4faf9;text-align:center;color:#4d676b}
.tt99-balance-lab-mission small,.tt99-balance-final-head small{font-size:.62rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase;color:#6b8285}
.tt99-balance-lab-mission strong{font-size:1rem;color:#285258}.tt99-balance-lab-mission span{font-size:.72rem;line-height:1.35}
.tt99-balance-lab-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
.tt99-balance-card{display:grid;gap:8px;padding:10px 12px;border:1px solid #d5e3e2;border-radius:13px;background:#fff;transition:.18s ease}
.tt99-balance-card.is-solved{border-color:#86b9b3;background:#f3fbf8;box-shadow:inset 0 0 0 1px #b7d9d4}
.tt99-balance-card-head{display:flex;justify-content:space-between;gap:8px;align-items:center}.tt99-balance-card-head small{font-size:.59rem;font-weight:900;color:#6f8488;letter-spacing:.05em}.tt99-balance-card-head span{font-size:.58rem;font-weight:850;color:#7d9194}.tt99-balance-card.is-solved .tt99-balance-card-head span{color:#14766e}
.tt99-balance-equation{display:grid;grid-template-columns:minmax(0,1fr) minmax(54px,76px) minmax(0,1fr);gap:7px;align-items:center;color:#294e53;font:900 clamp(.82rem,3vw,1.08rem)/1.2 inherit}
.tt99-balance-equation>span:first-child{text-align:right}.tt99-balance-equation>span:last-child{text-align:left}.tt99-balance-equation button{appearance:none;min-height:44px;border:1px solid #98b4b5;border-radius:9px;background:#fff;color:#294e53;font:900 1rem/1 inherit;cursor:pointer;touch-action:manipulation}.tt99-balance-equation button.is-selected{background:#e8f4fb;box-shadow:inset 0 0 0 3px #5b9cc3;border-color:#5b9cc3}.tt99-balance-equation button.is-hint{background:#fff7dc;box-shadow:inset 0 0 0 3px #d7ad32;border-color:#d7ad32}.tt99-balance-equation button.is-wrong{background:#fff0eb;color:#8d4939;box-shadow:inset 0 0 0 3px #cd7a64;border-color:#cd7a64}.tt99-balance-card.is-solved .tt99-balance-equation button{background:#e7f5f1;border-color:#72aaa3;color:#176e67}
.tt99-balance-final{display:grid;gap:12px;padding:14px;border:1px solid #c8d9d9;border-radius:16px;background:#fbfdfd;transition:.2s ease}.tt99-balance-final.is-locked{opacity:.62;background:#f6f8f8}.tt99-balance-final.is-balanced{border-color:#60a89e;background:#eef9f6;box-shadow:inset 0 0 0 2px #aad6cf}.tt99-balance-final.is-wrong{border-color:#cd8c79;background:#fff8f5}
.tt99-balance-final-head{display:grid;gap:3px;text-align:center}.tt99-balance-final-head strong{color:#275258;font-size:.95rem}.tt99-balance-final-head span{color:#698084;font-size:.68rem;line-height:1.35}
.tt99-balance-scale{display:grid;grid-template-columns:minmax(0,1fr) 90px minmax(0,1fr);gap:8px;align-items:end;min-height:120px}.tt99-balance-pan{display:grid;gap:5px;align-content:end;text-align:center}.tt99-balance-pan small{font-size:.57rem;font-weight:850;color:#6c8286}.tt99-balance-pan>div{display:flex;min-height:48px;align-items:flex-end;justify-content:center;gap:4px;flex-wrap:wrap;padding:7px;border-bottom:4px solid #78999a;border-radius:0 0 18px 18px}.tt99-balance-pan>div span{display:grid;place-items:center;min-width:34px;height:30px;padding:0 7px;border:1px solid #70a69f;border-radius:8px;background:#e7f5f1;color:#176f67;font:900 .78rem/1 inherit}.tt99-balance-pan>b{font-size:.75rem;color:#385d61}
.tt99-balance-beam-wrap{position:relative;height:80px;display:grid;align-items:end;justify-items:center}.tt99-balance-beam{position:absolute;bottom:44px;width:86px;height:5px;border-radius:99px;background:#6f8f91;transform:rotate(var(--balance-tilt,0deg));transform-origin:center;transition:transform .22s ease}.tt99-balance-stand{font-size:2.3rem;line-height:1;color:#6f8f91}
.tt99-balance-weight-tray{display:grid;gap:6px}.tt99-balance-weight-tray>small{text-align:center;font-size:.58rem;font-weight:800;color:#6e8588}.tt99-balance-weight-tray>div{display:flex;justify-content:center;gap:6px;flex-wrap:wrap}.tt99-balance-weight-tray button{appearance:none;display:grid;gap:2px;place-items:center;min-width:52px;padding:7px 8px;border:1px solid #a8bfc0;border-radius:10px;background:#fff;color:#34585d;cursor:pointer;touch-action:manipulation}.tt99-balance-weight-tray button b{font-size:.86rem}.tt99-balance-weight-tray button span{font-size:.5rem;font-weight:850;color:#73888c}.tt99-balance-weight-tray button.is-left{background:#eaf5fb;border-color:#7faec5}.tt99-balance-weight-tray button.is-right{background:#f0f6e8;border-color:#9bb47c}.tt99-balance-weight-tray button:disabled{cursor:not-allowed}
.tt99-balance-weight-tray button:not(.is-earned){opacity:.55}

/* Printable/browser preview · v1.94 */
.tt99-balance-lab-print .tt99-balance-print-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px;margin-top:8px}
.tt99-balance-lab-print .tt99-balance-print-card{display:grid;gap:5px;padding:8px 9px;border:1px solid #d5e3e2;border-radius:9px;background:#fff}.tt99-balance-lab-print .tt99-balance-print-card>small{font-size:.54rem;font-weight:900;color:#71868a;text-transform:uppercase;letter-spacing:.04em}
.tt99-balance-print-equation{display:flex;justify-content:center;align-items:center;gap:5px;min-height:34px;color:#294f54;font-weight:900;font-size:.82rem;white-space:nowrap}
.tt99-balance-paper-weight{display:inline-grid;grid-template-columns:19px minmax(25px,1fr);align-items:center;min-width:55px;height:28px;padding:0 6px 0 3px;border:1.4px solid #168b82;border-radius:8px;background:#fff;color:#0f6f68}.tt99-balance-paper-weight i{display:grid;place-items:center;width:19px;height:19px;border-radius:50%;background:#168b82;color:#fff;font-style:normal;font-size:.62rem;font-weight:950}.tt99-balance-paper-weight b{min-width:22px;border-bottom:1px solid #7f999b;text-align:center;font-size:.72rem;line-height:1.25}.tt99-balance-paper-weight.answer-fill{background:#eaf6f3}.tt99-balance-paper-weight.answer-fill b{border-bottom:0}.tt99-balance-paper-weight.compact{min-width:50px;height:25px;grid-template-columns:18px minmax(22px,1fr)}.tt99-balance-paper-weight.compact i{width:18px;height:18px}
.tt99-balance-print-results{display:flex;align-items:center;justify-content:center;gap:7px;margin-top:7px;padding:6px 9px;border:1px solid #d5e3e2;border-radius:9px;background:#f0f8f6}.tt99-balance-print-results>strong{margin-right:3px;font-size:.53rem;letter-spacing:.04em;text-transform:uppercase;color:#71868a}
.tt99-balance-print-final{margin-top:7px;padding:8px 10px 8px;border:1px solid #a6c2bf;border-radius:10px;background:#f5faf9;text-align:left}.tt99-balance-print-final>small{display:block;font-size:.57rem;font-weight:900;letter-spacing:.05em;text-transform:uppercase;color:#0f6f68}.tt99-balance-print-final>p{margin:2px 0 11px;color:#4f6c70;font-size:.59rem;line-height:1.3}
.tt99-balance-paper-scale{display:grid;grid-template-columns:minmax(0,1fr) 58px minmax(0,1fr);gap:7px;align-items:start}.tt99-balance-paper-pan{position:relative;display:grid;grid-template-rows:auto 1fr auto;min-height:70px;padding:6px 8px 6px;border:1px solid #90b2ae;border-radius:10px;background:#fff;text-align:center}.tt99-balance-paper-pan>small{display:block;text-align:left;font-size:.45rem;font-weight:900;color:#71868a;text-transform:uppercase}.tt99-balance-paper-pan-slots{display:flex;align-items:center;justify-content:center;gap:7px;padding:4px 0 5px}.tt99-balance-paper-pan-slots>span{display:grid;place-items:center;min-width:48px;height:22px;border:1px solid #a6c0bd;border-radius:6px;background:#fff;color:#657f82;font-size:.54rem}.tt99-balance-paper-pan-slots>span.filled{grid-template-columns:auto auto;gap:4px;background:#eaf6f3;color:#0f6f68}.tt99-balance-paper-pan-slots span b{font-size:.58rem}.tt99-balance-paper-pan-slots span em{font-size:.58rem;font-style:normal;font-weight:900}.tt99-balance-paper-pan>strong{display:block;padding-top:4px;border-top:1px solid #d0dfdd;text-align:left;font-size:.52rem;color:#385d61}
.tt99-balance-paper-centre{position:relative;height:70px;display:grid;align-items:end;justify-items:center}.tt99-balance-paper-centre .beam{position:absolute;top:5px;width:58px;height:4px;border-radius:99px;background:#648487}.tt99-balance-paper-centre .stand{font-size:1.9rem;line-height:1;color:#648487}.tt99-balance-paper-centre>b{position:absolute;bottom:20px;display:grid;place-items:center;width:36px;height:22px;border:1px solid #90b2ae;border-radius:12px;background:#fff;color:#0f6f68}
@media(max-width:620px){.tt99-balance-lab-list{grid-template-columns:1fr}.tt99-balance-scale{grid-template-columns:minmax(0,1fr) 70px minmax(0,1fr)}.tt99-balance-beam{width:66px}.tt99-balance-equation{grid-template-columns:minmax(0,1fr) 62px minmax(0,1fr)}.tt99-balance-lab-print .tt99-balance-print-list{grid-template-columns:1fr}.tt99-balance-print-results{flex-wrap:wrap}.tt99-balance-paper-scale{grid-template-columns:1fr 55px 1fr}.tt99-balance-paper-pan-slots{gap:4px}.tt99-balance-paper-pan-slots>span{min-width:38px}}
@media print{.tt99-balance-print-final,.tt99-balance-print-results{background:#fff}.tt99-balance-lab-print .tt99-balance-print-card{break-inside:avoid}}