:root{
  --bk-blue:#173f78;--bk-blue2:#24599a;--bk-gold:#b9801d;--bk-ink:#27323d;
  --bk-muted:#64717d;--bk-soft:#f6f8fb;--bk-line:#e2e7ec;--bk-white:#fff;
  --bk-shadow:0 12px 34px rgba(27,56,91,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--bk-ink);font-family:Arial,Helvetica,sans-serif;line-height:1.68}
a{color:var(--bk-blue)}
.bk-wrap{width:min(1080px,calc(100% - 40px));margin:auto}
.bk-header{border-bottom:1px solid var(--bk-line);background:#fff;position:relative;z-index:10}
.bk-header .bk-wrap{min-height:68px;display:flex;justify-content:space-between;align-items:center;gap:22px}
.bk-brand{font-weight:700;color:var(--bk-blue);text-decoration:none;font-size:18px}
.bk-nav{display:flex;gap:17px;flex-wrap:wrap}.bk-nav a{text-decoration:none;color:#45525e;font-size:14px}
.bk-hero{padding:52px 0 40px;background:linear-gradient(180deg,#fafcff 0%,#fff 100%);border-bottom:1px solid var(--bk-line)}
.bk-eyebrow{text-transform:uppercase;letter-spacing:.07em;font-size:12px;font-weight:700;color:var(--bk-gold)}
h1{font-size:44px;line-height:1.12;color:var(--bk-blue);margin:8px 0 14px}
h2{font-size:28px;line-height:1.25;color:var(--bk-blue)}
h3{color:#354553}
.bk-lead{font-size:20px;max-width:820px;color:#4e5b67;margin:0}
.bk-main{padding:42px 0 62px}
.bk-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}
.bk-card{border:1px solid var(--bk-line);border-radius:12px;background:#fff;padding:20px;box-shadow:0 2px 10px rgba(20,47,78,.03)}
.bk-card.soft{background:var(--bk-soft)}.bk-card h2,.bk-card h3{margin-top:0}
.bk-card-link{display:block;text-decoration:none;color:var(--bk-blue);transition:transform .15s ease,box-shadow .15s ease}
.bk-card-link:hover{transform:translateY(-2px);box-shadow:var(--bk-shadow)}
.bk-btn{display:inline-block;border:1px solid var(--bk-blue);border-radius:9px;padding:11px 16px;text-decoration:none;font-weight:700;color:var(--bk-blue);background:#fff;cursor:pointer;font-size:15px}
.bk-btn.primary{background:var(--bk-blue);color:#fff}.bk-btn.gold{background:#fff8e9;border-color:#c18a25;color:#765311}
.bk-actions{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0}
.bk-answer{background:var(--bk-soft);border-left:4px solid var(--bk-blue);padding:20px 22px;border-radius:0 10px 10px 0;margin:22px 0}
.bk-section{margin:40px 0}.bk-section:first-child{margin-top:0}
.bk-article{max-width:800px}.bk-article p{font-size:17px}
.bk-breadcrumbs{padding:16px 0 0;color:var(--bk-muted);font-size:13px}.bk-breadcrumbs a{text-decoration:none}
.bk-footer{background:var(--bk-soft);border-top:1px solid var(--bk-line);padding:27px 0;color:var(--bk-muted);font-size:14px}
.bk-footer-links{display:flex;gap:15px;flex-wrap:wrap;margin-bottom:8px}.bk-footer a{text-decoration:none;font-weight:600}
.bk-pill{display:inline-block;background:#eef4fb;border:1px solid #dbe8f7;color:var(--bk-blue);padding:5px 9px;border-radius:999px;font-size:12px;font-weight:700}
.bk-progress{height:10px;background:#edf0f3;border-radius:999px;overflow:hidden}.bk-progress>span{display:block;height:100%;background:var(--bk-blue);width:0}
.bk-muted{color:var(--bk-muted)}.bk-small{font-size:13px}.bk-center{text-align:center}
.bk-form label{display:block;font-weight:700;margin:13px 0 6px}.bk-form input,.bk-form select,.bk-form textarea{width:100%;padding:11px 12px;border:1px solid #cfd7df;border-radius:8px;font:inherit;background:#fff}
.bk-form textarea{min-height:120px}.bk-form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.bk-notice{padding:15px 17px;border-radius:9px;background:#f3f7fc;border:1px solid #dbe6f2;margin:18px 0}
.bk-success{background:#eff9f2;border-color:#cfe8d6}.bk-error{background:#fff3f3;border-color:#edcece}
.bk-profile{display:grid;grid-template-columns:110px 1fr;gap:20px;align-items:start}.bk-avatar{width:100px;height:100px;border-radius:50%;background:linear-gradient(135deg,#edf3fa,#fff5dc);display:flex;align-items:center;justify-content:center;color:var(--bk-blue);font-size:28px;font-weight:700;border:1px solid var(--bk-line)}
.bk-player{border:1px solid var(--bk-line);border-radius:16px;padding:28px;box-shadow:var(--bk-shadow);background:#fff}
.bk-player-line{font-size:25px;line-height:1.45;color:var(--bk-blue);min-height:110px;display:flex;align-items:center;justify-content:center;text-align:center;padding:14px}
.bk-time{font-size:34px;font-weight:700;color:var(--bk-blue);font-variant-numeric:tabular-nums}
.bk-choice{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin:16px 0}.bk-choice button{padding:14px;border:1px solid var(--bk-line);border-radius:10px;background:#fff;cursor:pointer;font-weight:700;color:var(--bk-blue)}
.bk-choice button.active{background:var(--bk-blue);color:#fff;border-color:var(--bk-blue)}
.bk-course-day{display:flex;gap:14px;align-items:flex-start}.bk-num{min-width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--bk-blue);color:#fff;font-weight:700}
.bk-daily-thought{font-size:27px;line-height:1.45;color:var(--bk-blue);font-weight:600}
.bk-table{width:100%;border-collapse:collapse}.bk-table th,.bk-table td{border-bottom:1px solid var(--bk-line);padding:12px 9px;text-align:left;vertical-align:top}.bk-table th{color:var(--bk-blue)}
.bk-sticky-cta{position:fixed;left:50%;bottom:14px;transform:translateX(-50%);z-index:90;display:flex;gap:8px;padding:9px;background:rgba(255,255,255,.96);border:1px solid var(--bk-line);border-radius:14px;box-shadow:var(--bk-shadow);backdrop-filter:blur(10px)}
.bk-sticky-cta a{white-space:nowrap}
@media(max-width:720px){
  h1{font-size:35px}.bk-lead{font-size:18px}.bk-header .bk-wrap{display:block;padding:14px 0}.bk-nav{margin-top:9px;gap:12px}
  .bk-form-row{grid-template-columns:1fr}.bk-profile{grid-template-columns:1fr}.bk-avatar{width:84px;height:84px}.bk-player-line{font-size:21px}
  .bk-sticky-cta{width:calc(100% - 20px);justify-content:center;bottom:8px}.bk-sticky-cta .bk-btn{padding:9px 10px;font-size:12px}
}