.fractions-hero h1{font-size:clamp(48px,7vw,94px)}.fib-activity{padding:12px 38px 40px;line-height:1.7;overflow-wrap:anywhere}.fib-activity button{background:#ffcb66;color:#102336;border:1px solid #ffcb66;border-radius:14px;padding:12px 18px;font:inherit;font-weight:700;cursor:pointer;min-height:46px}.fib-activity button:hover{background:#ffe3a8}.fib-activity button:disabled{opacity:.4;cursor:default}.fib-activity input,.fib-activity select{font:inherit;accent-color:#72dccc}.fib-activity input[type=number],.fib-activity select{background:#102b3c;color:#fff5de;border:1px solid #72dccc;border-radius:10px;padding:10px;max-width:140px}.fib-welcome{text-align:center;background:radial-gradient(ellipse at top,#22464e,transparent);padding:26px 10px;border-radius:24px}.fib-welcome>span{font-size:60px;color:#ffcb66}.fib-big{font-size:clamp(23px,3vw,38px);font-weight:bold;color:#ffcb66}.fib-chain{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0}.fib-chip{border:1px solid var(--chip);border-radius:16px;min-width:76px;padding:11px 14px;text-align:center;background:color-mix(in srgb,var(--chip) 9%,transparent);display:flex;flex-direction:column}.fib-chip small{font-size:12px;color:#c6d5df}.fib-chip strong{color:var(--chip);font-size:26px}.fib-chip.selected{box-shadow:0 0 0 3px #72dccc;background:#72dccc1a}.fib-equation{font-size:clamp(22px,3vw,33px);color:#ffcb66;line-height:1.45}.fib-actions{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0}.fib-note{padding:18px 22px;background:#72dccc0b;border-left:3px solid #72dccc;color:#c6d5df;font-size:16px}.fib-task{margin-top:30px;border:1px dashed #d1a2ff;border-radius:18px;padding:20px;background:#d1a2ff0a}.fib-task strong{color:#d1a2ff}.fib-task p{margin:6px 0}.fib-range{display:block;padding:16px 0;color:#e7f0ed}.fib-range>span{display:flex;justify-content:space-between;gap:20px}.fib-range output{color:#72dccc;font-weight:bold}.fib-range input{display:block;width:100%;margin-top:15px;min-height:32px}.fib-check{display:flex;align-items:center;gap:12px;margin:18px 0}.fib-check input{width:22px;height:22px}.fib-spiral{height:430px;background:#06131f;border-radius:22px;padding:20px}.fib-spiral svg{width:100%;height:100%;display:block}.fib-stair{display:flex;align-items:end;gap:5px;margin:30px 0}.fib-stair span{flex:1;background:linear-gradient(#72dccc,#247a83);border-radius:10px 10px 0 0;color:#06131f;text-align:center;font-weight:bold;padding-top:4px}.fib-paths{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;max-height:430px;overflow:auto;padding:5px}.fib-paths>div{border:1px solid #ffffff20;border-radius:12px;padding:9px;font-size:14px}.jump{display:inline-block;border-radius:8px;padding:3px 6px;margin:2px;background:#72dccc22;color:#72dccc}.jump-2{background:#ff9caa22;color:#ff9caa}.fib-ratio{display:flex;gap:16px;align-items:center;margin:50px 10px}.fib-ratio>div{position:relative;flex:1;height:5px;background:#486075}.fib-ratio i,.fib-ratio b{position:absolute;top:-13px;height:31px;width:6px;transform:translateX(-3px);background:#72dccc}.fib-ratio b{height:45px;top:-20px;background:#ffcb66;width:3px}.fib-table{overflow:auto}.fib-table table{width:100%;border-collapse:collapse;text-align:left}.fib-table caption{text-align:left;color:#72dccc;padding:12px 0}.fib-table td,.fib-table th{border-bottom:1px solid #ffffff20;padding:10px}.fib-legend{display:flex;gap:16px;flex-wrap:wrap}.fib-garden{text-align:center;background:radial-gradient(ellipse,#23464b,transparent);padding:50px 15px 10px;border-radius:24px}.fib-flower{width:200px;height:200px;position:relative;margin:20px auto 35px}.fib-flower i{position:absolute;left:75px;top:0;width:50px;height:100px;border-radius:70% 70% 45% 45%;background:linear-gradient(#ffb2bf,#da6683);transform-origin:25px 100px;transform:rotate(var(--a));border:1px solid #ffc8cf}.fib-flower b{position:absolute;left:72px;top:72px;width:56px;height:56px;border-radius:50%;background:#ffcb66;border:5px dotted #bf873a}.fib-activity form{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin:22px 0}.fib-activity form label{width:100%}.fib-score,.fib-celebrate{color:#72dccc;font-size:21px}.fib-question{background:#06131f;padding:24px;border-radius:20px}.fib-question h3{color:#ffcb66}.fib-observe li{margin:12px 0}[hidden]{display:none!important}@media(max-width:650px){.fib-activity{padding:12px 20px 28px}.fib-paths{grid-template-columns:1fr}.fib-spiral{height:320px;padding:10px}.fib-chip{min-width:64px;padding:9px}.fib-activity form button{width:100%}.fib-equation{font-size:24px}}