.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15, 17, 23, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.site-header__inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
    height: 58px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.site-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: #fff;
    font-weight: 700;
    font-size: 16px;
    letter-spacing: -0.2px;
    flex-shrink: 0;
}
.site-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}
.site-nav::-webkit-scrollbar { display: none; }
.site-nav__link {
    color: var(--muted);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 7px;
    white-space: nowrap;
    transition: color 0.15s, background 0.15s;
}
.site-nav__link:hover { color: #e6edf3; background: rgba(255,255,255,0.05); }
.site-nav__link.active { color: var(--accent); background: rgba(88,166,255,0.08); }

.site-footer {
    margin-top: 60px;
    border-top: 1px solid rgba(255,255,255,0.05);
    padding: 28px 20px;
}
.site-footer__inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}
.site-footer__links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 20px;
}
.site-footer__links a {
    color: var(--muted);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.15s;
}
.site-footer__links a:hover { color: var(--accent); }
.site-footer__copy { color: #444d56; font-size: 12px; }

.article-wrap {
    max-width: 1100px;
    margin: 0 auto;
    padding: 28px 20px 64px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 12.5px;
    color: var(--muted);
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.breadcrumb a { color: var(--accent); text-decoration: none; transition: opacity 0.15s; }
.breadcrumb a:hover { opacity: 0.75; }
.breadcrumb__sep { opacity: 0.35; font-size: 10px; }

.article-layout {
    display: grid;
    grid-template-columns: 1fr 276px;
    gap: 30px;
    align-items: start;
}

.article-sidebar {
    position: sticky;
    top: 78px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

@media (max-width: 860px) {
    .article-layout {
        grid-template-columns: 1fr;
        gap: 0;
    }
    .article-sidebar {
        display: none;
    }
}

.mobile-cta { display: none; }

@media (max-width: 860px) {
    .mobile-cta {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 10px 13px;
        margin-bottom: 20px;
        background: rgba(46,160,67,0.07);
        border: 1px solid rgba(46,160,67,0.2);
        border-radius: 10px;
        text-decoration: none;
        -webkit-tap-highlight-color: transparent;
        transition: background 0.15s;
    }
    .mobile-cta:active { background: rgba(46,160,67,0.13); }
    .mobile-cta__icon {
        width: 34px;
        height: 34px;
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(46,160,67,0.13);
        border-radius: 7px;
        font-size: 16px;
    }
    .mobile-cta__body { flex: 1; min-width: 0; }
    .mobile-cta__label {
        font-size: 10px;
        font-weight: 700;
        color: #3fb950;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        margin-bottom: 1px;
    }
    .mobile-cta__title {
        font-size: 13px;
        font-weight: 600;
        color: #e6edf3;
    }
    .mobile-cta__arrow {
        color: #3fb950;
        font-size: 18px;
        flex-shrink: 0;
    }
}

.article__title {
    font-size: clamp(1.4rem, 4vw, 2rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.25;
    letter-spacing: -0.4px;
    margin-bottom: 12px;
}
.article__meta {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-size: 12.5px;
    margin-bottom: 22px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    flex-wrap: wrap;
}
.article__meta-sep { opacity: 0.35; }
.article__lead {
    font-size: 15.5px;
    line-height: 1.78;
    color: #c9d1d9;
    margin-bottom: 22px;
}

/* h2 - акцентная левая полоска вместо шаблонного bottom border */
.article h2 {
    font-size: 1.18rem;
    font-weight: 700;
    color: #fff;
    margin: 30px 0 11px;
    padding-left: 12px;
    border-left: 2.5px solid var(--accent);
    line-height: 1.35;
}
.article h3 {
    font-size: 0.97rem;
    font-weight: 600;
    color: #e6edf3;
    margin: 20px 0 7px;
}
.article p {
    font-size: 15px;
    line-height: 1.82;
    color: #b0bec8;
    margin-bottom: 14px;
}
.article strong { color: #e6edf3; }
.article a { color: var(--accent); text-decoration: none; }
.article a:hover { text-decoration: underline; }

/* Блок формулы — чуть более "документальный" */
.article__formula {
    background: rgba(88,166,255,0.05);
    border: 1px solid rgba(88,166,255,0.18);
    border-radius: 9px;
    padding: 13px 16px;
    margin: 16px 0;
}
.article__formula-title {
    font-size: 10px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.8px;
    text-transform: uppercase;
    margin-bottom: 6px;
}
.article__formula-body {
    font-size: 14px;
    font-weight: 600;
    color: #e6edf3;
    font-family: "Courier New", monospace;
    line-height: 1.55;
    word-break: break-word;
}

.article__example { margin: 16px 0; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.article__table { width: 100%; border-collapse: collapse; font-size: 14px; }
.article__table th {
    background: rgba(255,255,255,0.035);
    color: var(--muted);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 9px 12px;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    white-space: nowrap;
}
.article__table td {
    padding: 9px 12px;
    color: #b0bec8;
    border-bottom: 1px solid rgba(255,255,255,0.035);
    font-size: 13px;
}
.article__table-result td {
    background: rgba(46,160,67,0.06);
    color: #56d364;
    border-top: 1px solid rgba(46,160,67,0.18);
    border-bottom: none;
}

.article__related {
    margin-top: 34px;
    padding-top: 22px;
    border-top: 1px solid rgba(255,255,255,0.05);
}
.article__related-title {
    font-size: 11px;
    font-weight: 700;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}
.article__related-links { display: flex; flex-direction: column; gap: 6px; }
.article__related-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 13px;
    background: rgba(255,255,255,0.025);
    border: 1px solid rgba(255,255,255,0.055);
    border-radius: 9px;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
    transition: border-color 0.15s, background 0.15s;
}
.article__related-card:hover, .article__related-card:active {
    border-color: rgba(88,166,255,0.22);
    background: rgba(88,166,255,0.045);
}
.article__related-label {
    font-size: 10px;
    font-weight: 700;
    color: var(--accent);
    background: rgba(88,166,255,0.1);
    padding: 2px 6px;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    flex-shrink: 0;
}
.article__related-text { flex: 1; font-size: 13px; color: #c9d1d9; font-weight: 500; }
.article__related-arrow { color: var(--muted); font-size: 14px; flex-shrink: 0; }

/* Сайдбар — разные радиусы для разных виджетов */
.sidebar-widget {
    background: rgba(22, 27, 34, 0.80);
    border: 1px solid rgba(255,255,255,0.055);
    border-radius: 13px;
    padding: 15px;
}
.sidebar-widget--cta {
    border-color: rgba(46,160,67,0.28);
    background: rgba(46,160,67,0.045);
    border-radius: 11px;
    border-left: 3px solid rgba(88,166,255,0.4);
    padding-left: 17px;
}
.sidebar-widget--nav {
    border-radius: 10px;
}
.sidebar-widget__title {
    font-size: 11px;
    font-weight: 700;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 9px;
}
.sidebar-widget--cta .sidebar-widget__title { color: var(--success); }
.sidebar-widget__text { font-size: 13px; color: var(--muted); line-height: 1.6; margin-bottom: 13px; }
.sidebar-widget__btn { display: block; text-align: center; text-decoration: none; font-size: 13px; }
.sidebar-widget__formula {
    font-size: 14px;
    font-weight: 700;
    color: var(--accent);
    font-family: "Courier New", monospace;
    background: rgba(88,166,255,0.055);
    border-radius: 7px;
    padding: 8px 11px;
    margin-bottom: 8px;
    word-break: break-word;
}
.sidebar-widget__note { font-size: 12px; color: var(--muted); }
.sidebar-nav { display: flex; flex-direction: column; gap: 1px; }
.sidebar-nav__link {
    display: block;
    padding: 7px 8px;
    color: var(--muted);
    text-decoration: none;
    font-size: 13px;
    border-radius: 6px;
    transition: color 0.15s, background 0.15s;
}
.sidebar-nav__link:hover { color: var(--accent); background: rgba(88,166,255,0.06); }

@media (max-width: 600px) {
    .article-wrap { padding: 14px 14px 52px; }
    .article__title { font-size: 1.28rem; }
    .article h2 { font-size: 1.03rem; margin-top: 24px; }
    .article p { font-size: 14.5px; }
    .article__lead { font-size: 14.5px; }
    .article__formula-body { font-size: 13px; }
    .breadcrumb { margin-bottom: 14px; font-size: 12px; }
    .site-header__inner { height: 52px; }
    .site-nav__link { font-size: 12px; padding: 4px 8px; }
}

/* светлая тема */
[data-theme="light"] .site-header {
    background: rgba(240,244,248,0.92);
    border-bottom-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .site-logo { color: #0f172a; }
[data-theme="light"] .site-nav__link { color: #64748b; }
[data-theme="light"] .site-nav__link:hover { color: #0f172a; background: rgba(0,0,0,0.04); }
[data-theme="light"] .site-nav__link.active { color: var(--accent); background: rgba(37,99,235,0.07); }

[data-theme="light"] .site-footer { border-top-color: rgba(0,0,0,0.07); }
[data-theme="light"] .site-footer__links a { color: #64748b; }
[data-theme="light"] .site-footer__links a:hover { color: var(--accent); }
[data-theme="light"] .site-footer__copy { color: #94a3b8; }

[data-theme="light"] .breadcrumb { color: #64748b; }
[data-theme="light"] .breadcrumb a { color: var(--accent); }

[data-theme="light"] .article__title { color: #0f172a; }
[data-theme="light"] .article__meta { color: #64748b; border-bottom-color: rgba(0,0,0,0.06); }
[data-theme="light"] .article__lead { color: #334155; }
[data-theme="light"] .article h2 { color: #0f172a; border-left-color: var(--accent); }
[data-theme="light"] .article h3 { color: #1e293b; }
[data-theme="light"] .article p { color: #475569; }
[data-theme="light"] .article strong { color: #1e293b; }

[data-theme="light"] .article__formula {
    background: rgba(37,99,235,0.04);
    border-color: rgba(37,99,235,0.18);
}
[data-theme="light"] .article__formula-body { color: #1e293b; }

[data-theme="light"] .article__table th {
    background: rgba(0,0,0,0.03);
    color: #64748b;
    border-bottom-color: rgba(0,0,0,0.07);
}
[data-theme="light"] .article__table td {
    color: #475569;
    border-bottom-color: rgba(0,0,0,0.04);
}
[data-theme="light"] .article__table-result td {
    background: rgba(22,163,74,0.06);
    color: #16a34a;
    border-top-color: rgba(22,163,74,0.18);
}

[data-theme="light"] .article__related { border-top-color: rgba(0,0,0,0.06); }
[data-theme="light"] .article__related-title { color: #94a3b8; }
[data-theme="light"] .article__related-card {
    background: rgba(0,0,0,0.02);
    border-color: rgba(0,0,0,0.065);
}
[data-theme="light"] .article__related-card:hover {
    border-color: rgba(37,99,235,0.22);
    background: rgba(37,99,235,0.04);
}
[data-theme="light"] .article__related-text { color: #1e293b; }

[data-theme="light"] .sidebar-widget {
    background: #ffffff;
    border-color: rgba(0,0,0,0.07);
}
[data-theme="light"] .sidebar-widget--cta {
    background: rgba(22,163,74,0.035);
    border-color: rgba(22,163,74,0.22);
    border-left-color: rgba(37,99,235,0.4);
}
[data-theme="light"] .sidebar-widget__title { color: #94a3b8; }
[data-theme="light"] .sidebar-widget--cta .sidebar-widget__title { color: #16a34a; }
[data-theme="light"] .sidebar-widget__text { color: #64748b; }
[data-theme="light"] .sidebar-widget__formula {
    color: var(--accent);
    background: rgba(37,99,235,0.055);
}
[data-theme="light"] .sidebar-widget__note { color: #94a3b8; }
[data-theme="light"] .sidebar-nav__link { color: #64748b; }
[data-theme="light"] .sidebar-nav__link:hover { color: var(--accent); background: rgba(37,99,235,0.05); }

[data-theme="light"] .mobile-cta {
    background: rgba(22,163,74,0.06);
    border-color: rgba(22,163,74,0.18);
}
[data-theme="light"] .mobile-cta__title { color: #0f172a; }

/* прогресс-бар весов СО/СОР/СОЧ */
.article__weights-inline {
    margin: 20px 0;
    padding: 0;
    background: none;
    border: none;
}
.article__weights-labels {
    display: flex;
    margin-bottom: 6px;
}
.article__weights-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    text-align: center;
    flex-shrink: 0;
}
.article__weights-label--so  { width: 25%; color: #58a6ff; }
.article__weights-label--sor { width: 25%; color: #e3b341; }
.article__weights-label--soch{ width: 50%; color: #3fb950; }

.article__weights-bar {
    display: flex;
    height: 9px;
    border-radius: 99px;
    overflow: hidden;
    background: rgba(255,255,255,0.05);
    gap: 2px;
}
.article__weights-seg {
    height: 100%;
    transition: width 0.6s cubic-bezier(.2,.9,.25,1);
    position: relative;
}
.article__weights-seg--so {
    width: 25%;
    background: linear-gradient(90deg, #3a7bd5, #58a6ff);
    border-radius: 99px 0 0 99px;
}
.article__weights-seg--sor {
    width: 25%;
    background: linear-gradient(90deg, #c5920a, #e3b341);
}
.article__weights-seg--soch {
    width: 50%;
    background: linear-gradient(90deg, #2ea043, #3fb950);
    border-radius: 0 99px 99px 0;
}

.article__weights-pcts {
    display: flex;
    margin-top: 5px;
}
.article__weights-pct {
    font-size: 12px;
    font-weight: 700;
    text-align: center;
    flex-shrink: 0;
}
.article__weights-pct--so  { width: 25%; color: #58a6ff; }
.article__weights-pct--sor { width: 25%; color: #e3b341; }
.article__weights-pct--soch{ width: 50%; color: #3fb950; }

[data-theme="light"] .article__weights-label--so  { color: #2563eb; }
[data-theme="light"] .article__weights-label--sor { color: #d97706; }
[data-theme="light"] .article__weights-label--soch{ color: #16a34a; }
[data-theme="light"] .article__weights-seg--so    { background: linear-gradient(90deg, #1d4ed8, #3b82f6); }
[data-theme="light"] .article__weights-seg--sor   { background: linear-gradient(90deg, #b45309, #f59e0b); }
[data-theme="light"] .article__weights-seg--soch  { background: linear-gradient(90deg, #15803d, #22c55e); }
[data-theme="light"] .article__weights-pct--so  { color: #2563eb; }
[data-theme="light"] .article__weights-pct--sor { color: #d97706; }
[data-theme="light"] .article__weights-pct--soch{ color: #16a34a; }

@media (max-width: 600px) {
    .article__weights-label { font-size: 10px; }
    .article__weights-pct   { font-size: 11px; }
    .article__weights-bar   { height: 8px; }
}