.bh{--b:#1252d1;--bd:#0d3da1;--soft:#5a6b82;--line:#e3eaf4;--sky:#eef4ff;--ink:#15233d;--green:#1f9d6b;max-width:720px}.bh-intro{align-items:center;gap:14px;margin-bottom:18px;display:flex}.bh-hi{color:var(--ink);letter-spacing:-.01em;font-size:21px;font-weight:800}.bh-sub{color:var(--soft);margin-top:3px;font-size:15px;line-height:1.5}.bh-box{border:2px solid var(--line);background:#fff;border-radius:16px;align-items:center;gap:11px;padding:6px 16px;transition:border-color .15s;display:flex;box-shadow:0 10px 26px -16px #15234740}.bh-box:focus-within{border-color:var(--b)}.bh-box>svg{color:var(--b);flex:none}.bh-input{font:inherit;color:var(--ink);background:0 0;border:0;outline:0;flex:1;padding:12px 0;font-size:17px}.bh-chips{flex-wrap:wrap;align-items:center;gap:8px;margin:14px 0 4px;display:flex}.bh-chips-lbl{color:var(--soft);font-size:13px;font-weight:700}.bh-chip{font:inherit;color:var(--bd);background:var(--sky);cursor:pointer;border:1px solid #dbe6fb;border-radius:999px;padding:6px 13px;font-size:13.5px;font-weight:650;transition:background .12s}.bh-chip:hover{background:#e2ecfe}.bh-empty{color:var(--soft);margin-top:22px;font-size:15px}.bh-results{flex-direction:column;gap:14px;margin-top:20px;display:flex}.bh-card{border:1px solid var(--line);background:#fff;border-radius:16px;padding:18px 20px;box-shadow:0 1px 2px #1523470a,0 10px 26px -18px #1523472e}.bh-answer{background:linear-gradient(#f3fbf6,#fff);border-color:#bfe6cc}.bh-answer-q{color:var(--green);align-items:center;gap:8px;font-size:16px;font-weight:800;display:flex}.bh-answer-a{color:var(--ink);margin:8px 0 12px;font-size:16px;line-height:1.6}.bh-more{color:var(--b);align-items:center;gap:6px;font-size:14px;font-weight:700;text-decoration:none;display:inline-flex}.bh-none p{color:var(--ink);font-size:16px;line-height:1.6}.bh-none a,.bh-answer-a a{color:var(--b);font-weight:700}.bh-lessons-h{text-transform:uppercase;letter-spacing:.06em;color:var(--soft);margin-bottom:8px;font-size:12px;font-weight:800}.bh-lesson{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:13px;align-items:center;gap:12px;margin-bottom:8px;padding:13px 16px;text-decoration:none;transition:border-color .14s,transform .14s;display:flex}.bh-lesson:hover{border-color:var(--b);transform:translate(2px)}.bh-lesson-ic{background:var(--sky);width:30px;height:30px;color:var(--b);border-radius:9px;flex:none;place-items:center;display:grid}.bh-lesson-t{flex:1;font-size:15.5px;font-weight:650}.bh-lesson>svg:last-child{color:var(--soft);flex:none}.bh-foot{color:var(--soft);margin-top:22px;font-size:14px;line-height:1.5}.bh-foot strong{color:var(--ink)}