/* Five problem entries; scoped to avoid changing other site layouts. */
.hp-page .bt-problem-hero,.bt-prep-page .bt-problem-hero{display:block!important;padding:36px 0!important;border:0!important;background:transparent!important}body[data-bt-template] .hp-page header.bt-problem-hero>.bt-problem-intro{padding:32px 0!important}.bt-problem-entry h2,.bt-problem-entry h3{font-weight:750}
.bt-problem-intro{max-width:930px}.bt-problem-intro h1{max-width:21ch!important;font-size:clamp(2.1rem,4vw,3.8rem)!important;line-height:1.08!important;letter-spacing:-.035em}.bt-problem-intro .bt-problem-answer{font-size:clamp(1.06rem,1.6vw,1.22rem);line-height:1.6;max-width:74ch}.bt-problem-source{font-size:.87rem!important;margin:.8rem 0 1.5rem!important}.bt-problem-offer{font-size:.92rem!important;max-width:68ch;line-height:1.55!important;color:#3e5268}.bt-problem-intro .hp-actions{display:flex;flex-wrap:wrap;align-items:center;gap:1rem}.bt-problem-entry{margin-block:1.4rem 3.5rem;scroll-margin-top:110px}.bt-problem-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:28px;align-items:start}.bt-problem-question,.bt-problem-proof{min-width:0;border:1px solid #cfdae6;border-radius:20px;background:#f2f6fb;padding:28px;color:#0b1d3a}.bt-problem-question h2{font-size:clamp(1.6rem,2.4vw,2.1rem);line-height:1.15;letter-spacing:-.02em;margin:.4rem 0 1rem}.bt-problem-question p,.bt-problem-proof p{line-height:1.6}.bt-problem-question label{display:block;font-weight:700;font-size:.92rem;margin:1.2rem 0 .5rem}.bt-problem-question textarea{box-sizing:border-box;display:block;width:100%;max-width:100%;min-height:180px;padding:16px;border:1px solid #aabdd1;border-radius:10px;background:#fff;color:#17324d;font:inherit;line-height:1.55;resize:vertical}.bt-problem-question .hp-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:14px}.bt-problem-small,.bt-problem-limit{font-size:.9rem;line-height:1.55}.bt-problem-limit{border-top:1px solid #cdd9e6;padding-top:14px;margin-top:16px}.bt-problem-proof{background:#fff}.bt-problem-proof img{width:100%;height:auto;display:block;border-radius:12px;margin-bottom:22px}.bt-problem-proof h3{font-size:1.45rem;line-height:1.2;margin:.4rem 0 1rem}.bt-problem-proof a{font-weight:650}.bt-problem-entry a,.bt-problem-context a{text-underline-offset:3px}.bt-problem-entry [hidden],.bt-problem-context[hidden]{display:none!important}.bt-problem-entry button:focus-visible,.bt-problem-entry a:focus-visible,.bt-problem-entry textarea:focus-visible{outline:3px solid #2868c7;outline-offset:4px}.bt-problem-anchor{display:block;scroll-margin-top:110px}.bt-problem-return .hp-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px}.bt-problem-context{padding:20px;border:1px solid #b9cddf;border-radius:12px;background:#edf5fc;margin:0 0 20px}.bt-problem-context h2{font-size:1.2rem;margin:0 0 .5rem}.bt-problem-context p{line-height:1.5}.bt-problem-context textarea{width:100%;box-sizing:border-box;min-height:150px;padding:12px;line-height:1.5;font:inherit;border:1px solid #aabdd1;border-radius:8px}.bt-problem-context summary{cursor:pointer;font-weight:650}.bt-problem-context .hp-button{margin-top:12px}.bt-problem-context [hidden]{display:none!important}
@media(max-width:760px){.bt-problem-grid{grid-template-columns:1fr;gap:20px}.bt-problem-question,.bt-problem-proof{padding:21px}.bt-problem-intro h1{font-size:clamp(2rem,8vw,2.8rem)!important}.bt-problem-intro .hp-button,.bt-problem-return .hp-button{white-space:normal;text-align:center;max-width:100%;box-sizing:border-box}.bt-problem-question textarea{min-height:245px}.bt-problem-entry{margin-top:0}.bt-problem-context{padding:16px}}