.isi-app{max-width:1500px;margin:24px auto;padding:10px 18px;font-family:Arial,Helvetica,sans-serif;background:#dfe6ef;border-radius:14px;color:#13274b}.isi-header{text-align:center;margin-bottom:18px}.isi-header h1{font-size:48px;line-height:1.1;margin:0 0 8px;font-weight:800;color:#0a2453}.isi-header p{margin:0;font-size:18px;color:#334c72}.isi-grid{display:grid;grid-template-columns:425px 1fr;gap:22px;align-items:start}.isi-left-card,.isi-main-card{background:#f2f2f2;border-radius:22px;padding:22px;box-shadow:0 1px 0 rgba(0,0,0,.03)}.isi-group{margin-bottom:18px}.isi-group label{display:block;font-size:20px;font-weight:700;color:#000;margin-bottom:10px}.isi-group select,.isi-group input[type=range]{width:100%}.isi-group select{height:42px;border:1px solid #989898;border-radius:4px;padding:0 8px;background:#fff;font-size:18px}.isi-chip{display:inline-block;margin-top:10px;background:#dce8f9;color:#13274b;padding:10px 14px;border-radius:12px;font-size:18px}.isi-group input[type=range]{appearance:none;-webkit-appearance:none;height:8px;background:#d4d4d4;border-radius:999px;outline:none}.isi-group input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:22px;height:22px;border-radius:50%;background:#1d82db;border:0;cursor:pointer}.isi-group input[type=range]::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:#1d82db;border:0;cursor:pointer}.isi-buttons{display:flex;gap:12px;flex-wrap:wrap;margin-top:10px}.isi-buttons button{border:0;border-radius:14px;padding:14px 18px;font-size:18px;font-weight:700;color:#fff;cursor:pointer}.btn-red{background:#ef2a21}.btn-blue{background:#2f66e5}.btn-gray{background:#4b5b76}.isi-stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}.isi-stat-box{background:#e7eaee;border:1px solid #c7d1de;border-radius:18px;padding:14px}.isi-stat-box span{display:block;font-size:16px;color:#5a6980;margin-bottom:8px}.isi-stat-box strong{display:block;font-size:28px;color:#0a2453;line-height:1.1}.isi-main-card{display:grid;grid-template-columns:minmax(0,1fr) 160px;gap:18px}.isi-model-card{grid-column:1/2;background:#d6e3f5;border:1px solid #b8d4f8;border-radius:20px;padding:16px 20px}.isi-model-card h2{margin:0 0 10px;font-size:24px;color:#333b47;font-weight:700}.isi-model-area{background:#c9d7eb;border:6px solid #294b95;border-radius:0;min-height:360px;position:relative;overflow:hidden;margin-bottom:10px}.particles-area{position:relative;width:100%;height:360px}.particle-dot{position:absolute;width:18px;height:18px;border-radius:50%;background:#6f73de;opacity:.95;box-shadow:0 0 0 2px rgba(111,115,222,.08);animation:drift 3.2s infinite alternate ease-in-out}.particle-dot.fast{animation-duration:1.2s}.particle-dot.medium{animation-duration:2s}@keyframes drift{from{transform:translate(0,0)}to{transform:translate(26px,-20px)}}.isi-model-card p{margin:6px 0 0;font-size:17px;color:#4a4f59}.thermo-column{grid-column:2/3;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;padding-top:10px}.thermo-body{position:relative;width:78px;height:340px;border:6px solid #39485c;border-radius:42px;background:#e9edf3;overflow:hidden}.thermo-fill{position:absolute;left:0;right:0;bottom:0;height:28%;background:linear-gradient(180deg,#ff9aa0,#f74a4a);transition:height .6s ease}.thermo-bulb{position:absolute;left:50%;transform:translateX(-50%);bottom:-88px;width:96px;height:96px;border-radius:50%;background:#f64141;border:6px solid #39485c}.thermo-label{margin-top:126px;background:#dce8f9;color:#20314f;padding:10px 14px;border-radius:12px;font-size:22px}.energy-wrap{grid-column:1/3;margin-top:2px}.energy-wrap h3{margin:0 0 10px;font-size:22px;color:#1f2d3f}.energy-bar-bg{width:100%;height:32px;background:#cfd6df;border-radius:18px;overflow:hidden;border:1px solid #bcc8d6}.energy-bar-fill{height:100%;width:40%;background:#25bd53;transition:width .6s ease}.teacher-box{grid-column:1/3;background:#f7efe6;border:1px solid #f1ac4e;border-radius:18px;padding:16px 18px}.teacher-box h3{margin:0 0 10px;font-size:20px;color:#17233f}.teacher-box ol{margin:0;padding-left:24px}.teacher-box li{font-size:18px;line-height:1.55;color:#273447}@media(max-width:1200px){.isi-grid{grid-template-columns:1fr}.isi-main-card{grid-template-columns:1fr}.thermo-column{grid-column:1/2;flex-direction:row;gap:20px;align-items:flex-end}.thermo-label{margin-top:0;margin-bottom:6px}.energy-wrap,.teacher-box{grid-column:1/2}}@media(max-width:760px){.isi-app{padding:8px}.isi-header h1{font-size:30px}.isi-header p{font-size:16px}.isi-left-card,.isi-main-card{padding:14px;border-radius:16px}.isi-buttons button{flex:1 1 100%}.isi-stats-grid{grid-template-columns:1fr}.isi-model-area,.particles-area{min-height:250px;height:250px}.thermo-body{height:260px}.thermo-bulb{bottom:-72px;width:80px;height:80px}.thermo-label{font-size:18px}.isi-stat-box strong{font-size:24px}}