*{box-sizing:border-box}body{font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;margin:0;background:#f0f4f6;color:#173044;font-size:15px;line-height:1.82}.top{display:flex;gap:20px;justify-content:space-between;align-items:center;background:#142d41;padding:12px 5%;flex-wrap:wrap}.top a{color:white;font-weight:650;text-decoration:none}.top button{background:white;color:#142d41;border:0;border-radius:6px;padding:11px;font-weight:700;cursor:pointer}main{max-width:970px;margin:30px auto;background:#fff;padding:clamp(25px,6vw,70px);box-shadow:0 5px 25px #2b486413}.kicker,.overline{color:#58778a;font-size:11px;letter-spacing:.16em;font-weight:800;text-transform:uppercase}h1{font-size:clamp(28px,3.5vw,48px);line-height:1.14;letter-spacing:-.045em;margin:20px 0}h2{font-size:25px;line-height:1.35;letter-spacing:-.025em}h3{font-size:19px}.deck{font-size:19px;color:#547084}.caution{border-left:4px solid #b34b59;background:#f5f7f9;padding:16px 20px;margin:26px 0}.overview{background:#f2f6f8;padding:16px 25px;border:1px solid #dce5e9}.chapter{margin:50px 0;border-top:1px solid #dbe4e9;padding-top:25px}.exercise{padding:18px 23px;border-left:3px solid #34627c;background:#f4f7f9}.quiz>li{padding:16px 0;border-bottom:1px solid #e3eaf0}.reference{font-size:14px;color:#416174}.break{break-before:page}.caution,.chapter,.quiz li{break-inside:avoid-page}a{color:#1b567b;overflow-wrap:anywhere}footer{border-top:1px solid #dde7ee;margin-top:55px;padding-top:18px;color:#5a7282;font-size:12px}@media print{@page{size:A4;margin:17mm}body{background:#fff;font-size:11pt}.noprint{display:none}main{padding:0;max-width:none;margin:0;box-shadow:none}.chapter{margin:23px 0;padding-top:13px}h1{font-size:28pt}h2{font-size:16pt}.overview,.caution,.exercise{background:white}.chapter,.quiz>li{break-inside:avoid-page}a{color:#222;text-decoration:none}}