.bd-page {
    background: #080d16;
    color: #dbe4ee;
}
.bd-hero {
    position: relative;
    min-height: 520px;
    display: flex;
    align-items: end;
    overflow: hidden;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background: #111827;
}
.bd-hero__image,
.bd-hero__shade {
    position: absolute;
    inset: 0;
}
.bd-hero__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}
.bd-hero__shade {
    background: rgba(3, 7, 18, 0.76);
}
.bd-hero__inner {
    position: relative;
    z-index: 1;
    width: min(1050px, calc(100% - 40px));
    margin: 0 auto;
    padding: 160px 0 58px;
}
.bd-breadcrumbs {
    margin-bottom: 22px;
    color: #aab7c7;
    font-size: 0.84rem;
}
.bd-breadcrumbs a {
    color: #67e8f9;
    text-decoration: none;
}
.bd-kicker {
    display: inline-flex;
    padding: 5px 9px;
    border-radius: 4px;
    background: #fbbf24;
    color: #111827;
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0;
}
.bd-hero h1 {
    max-width: 900px;
    margin: 16px 0 18px;
    color: #fff;
    font-size: 2.8rem;
    line-height: 1.13;
    letter-spacing: 0;
}
.bd-hero__dek {
    max-width: 800px;
    margin: 0;
    color: #d1dae5;
    font-size: 1.08rem;
    line-height: 1.72;
}
.bd-hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px 24px;
    margin-top: 24px;
    color: #aab7c7;
    font-size: 0.82rem;
}
.bd-layout {
    width: min(1050px, calc(100% - 40px));
    margin: 0 auto;
    padding: 54px 0 76px;
}
.bd-answer {
    margin-bottom: 44px;
    padding: 24px 26px;
    border-left: 4px solid #22d3ee;
    background: #101722;
}
.bd-answer h2 {
    margin: 0 0 10px;
    color: #67e8f9;
    font-size: 1.15rem;
    letter-spacing: 0;
}
.bd-answer p {
    margin: 0;
    color: #e5edf5;
    font-size: 1.02rem;
    line-height: 1.75;
}
.bd-section {
    padding: 42px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.09);
}
.bd-section h2 {
    margin: 0 0 18px;
    color: #fff;
    font-size: 1.85rem;
    line-height: 1.25;
    letter-spacing: 0;
}
.bd-section h3 {
    margin: 28px 0 10px;
    color: #a7f3d0;
    font-size: 1.15rem;
    letter-spacing: 0;
}
.bd-section p,
.bd-section li {
    color: #b8c4d2;
    font-size: 1rem;
    line-height: 1.78;
}
.bd-section p {
    margin: 0 0 17px;
}
.bd-section ul,
.bd-section ol {
    margin: 16px 0 22px;
    padding-left: 23px;
}
.bd-section li {
    margin-bottom: 9px;
}
.bd-rule-table-wrap {
    margin: 24px 0;
    overflow-x: auto;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
}
.bd-rule-table {
    width: 100%;
    min-width: 680px;
    border-collapse: collapse;
    background: #0d1420;
}
.bd-rule-table th,
.bd-rule-table td {
    padding: 14px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    text-align: left;
    vertical-align: top;
    line-height: 1.55;
}
.bd-rule-table th {
    background: #151e2b;
    color: #fbbf24;
    font-size: 0.82rem;
    font-weight: 750;
}
.bd-rule-table td {
    color: #c2ceda;
    font-size: 0.92rem;
}
.bd-rule-table tr:last-child td {
    border-bottom: 0;
}
.bd-note {
    margin: 22px 0;
    padding: 18px 20px;
    border: 1px solid rgba(251, 191, 36, 0.3);
    border-radius: 8px;
    background: #171712;
    color: #e8dfbc;
    line-height: 1.65;
}
.bd-formula {
    margin: 22px 0;
    padding: 18px 20px;
    overflow-x: auto;
    border-radius: 8px;
    background: #071f25;
    color: #a5f3fc;
    font-family: Consolas, monospace;
    font-size: 0.93rem;
    line-height: 1.7;
}
.bd-source-list a,
.bd-section a {
    color: #67e8f9;
}
.bd-cluster-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: 22px;
}
.bd-related {
    min-height: 116px;
    padding: 18px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    background: #101722;
    color: #fff;
    text-decoration: none;
}
.bd-related:hover,
.bd-related:focus-visible {
    border-color: #22d3ee;
    color: #67e8f9;
    outline: 0;
}
.bd-related span {
    display: block;
    margin-top: 7px;
    color: #94a3b8;
    font-size: 0.82rem;
    line-height: 1.5;
}
.bd-faq details {
    padding: 17px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.bd-faq summary {
    color: #fff;
    cursor: pointer;
    font-weight: 700;
    line-height: 1.5;
}
.bd-faq details p {
    margin: 12px 0 0;
}
.bd-cta {
    margin-top: 38px;
    padding: 30px;
    border: 1px solid rgba(34, 211, 238, 0.28);
    background: #0c1a22;
    text-align: center;
}
.bd-cta h2 {
    margin: 0 0 10px;
    color: #fff;
    font-size: 1.55rem;
}
.bd-cta p {
    max-width: 720px;
    margin: 0 auto 20px;
    color: #afbdca;
    line-height: 1.7;
}
.bd-cta a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 46px;
    padding: 11px 20px;
    border-radius: 6px;
    background: #22d3ee;
    color: #082f49;
    font-weight: 800;
    text-decoration: none;
}
.bd-disclaimer {
    margin-top: 32px;
    color: #7f8c9b;
    font-size: 0.78rem;
    line-height: 1.65;
}
@media (max-width: 720px) {
    .bd-hero {
        min-height: 600px;
    }
    .bd-hero__inner,
    .bd-layout {
        width: min(100% - 28px, 1050px);
    }
    .bd-hero__inner {
        padding-bottom: 38px;
    }
    .bd-hero h1 {
        font-size: 2.05rem;
    }
    .bd-cluster-grid {
        grid-template-columns: 1fr;
    }
    .bd-answer,
    .bd-cta {
        padding: 21px 18px;
    }
}