:root {
    color-scheme: dark;
    --manual-bg: #08080c;
    --manual-panel: rgba(255, 255, 255, 0.055);
    --manual-panel-strong: rgba(255, 255, 255, 0.085);
    --manual-border: rgba(255, 255, 255, 0.14);
    --manual-text: #f5f5f7;
    --manual-muted: rgba(245, 245, 247, 0.68);
    --manual-soft: rgba(245, 245, 247, 0.52);
    --manual-link: #8ab4ff;
    --manual-accent: #a78bfa;
    --manual-warning: #ffd27a;
}

* { box-sizing: border-box; }

body.manual-body {
    margin: 0;
    background: radial-gradient(circle at top left, rgba(167, 139, 250, 0.14), transparent 34rem), var(--manual-bg);
    color: var(--manual-text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.manual-topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 64px;
    padding: 0 28px;
    border-bottom: 1px solid var(--manual-border);
    background: rgba(8, 8, 12, 0.86);
    backdrop-filter: blur(16px);
}

.manual-brand,
.manual-toplink {
    color: var(--manual-text);
    text-decoration: none;
}

.manual-brand {
    display: inline-flex;
    align-items: center;
    flex-shrink: 0;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.manual-brand-logo {
    display: block;
    width: auto;
    height: 32px;
    max-width: 170px;
    object-fit: contain;
}

.manual-nav {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.manual-toplink {
    border: 1px solid var(--manual-border);
    border-radius: 999px;
    padding: 8px 12px;
    color: var(--manual-muted);
    font-size: 0.92rem;
}

.manual-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 32px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 42px 28px 80px;
}

.manual-main {
    min-width: 0;
}

.manual-hero {
    border: 1px solid var(--manual-border);
    border-radius: 18px;
    background: linear-gradient(145deg, rgba(255,255,255,0.08), rgba(255,255,255,0.035));
    padding: 30px;
    margin-bottom: 22px;
}

.manual-kicker {
    color: var(--manual-accent);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.manual-hero h1 {
    margin: 0 0 12px;
    font-size: clamp(2rem, 4vw, 3.6rem);
    line-height: 1.05;
}

.manual-subtitle {
    max-width: 820px;
    color: var(--manual-muted);
    line-height: 1.7;
    margin: 0;
    font-size: 1.05rem;
}

.manual-notice {
    margin-top: 18px;
    border: 1px solid rgba(255, 210, 122, 0.35);
    background: rgba(255, 210, 122, 0.09);
    color: var(--manual-warning);
    border-radius: 12px;
    padding: 14px 16px;
    line-height: 1.6;
}

.manual-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.manual-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 0 14px;
    border-radius: 999px;
    border: 1px solid var(--manual-border);
    color: var(--manual-text);
    text-decoration: none;
    background: rgba(255,255,255,0.055);
}

.manual-content {
    border: 1px solid var(--manual-border);
    border-radius: 18px;
    background: rgba(255,255,255,0.045);
    padding: 30px;
}

.manual-content :first-child { margin-top: 0; }

.manual-content h1,
.manual-content h2,
.manual-content h3,
.manual-content h4 {
    color: var(--manual-text);
    line-height: 1.25;
    scroll-margin-top: 84px;
}

.manual-content h1 { font-size: 2rem; margin: 0 0 18px; }
.manual-content h2 { font-size: 1.58rem; margin: 34px 0 14px; padding-top: 6px; }
.manual-content h3 { font-size: 1.22rem; margin: 26px 0 12px; }
.manual-content h4 { font-size: 1rem; margin: 20px 0 10px; }

.manual-content p,
.manual-content li {
    color: rgba(245,245,247,0.78);
    line-height: 1.72;
}

.manual-content a { color: var(--manual-link); }
.manual-content strong { color: var(--manual-text); }
.manual-content code {
    color: #f9d27d;
    background: rgba(255,255,255,0.08);
    border-radius: 6px;
    padding: 2px 6px;
}

.manual-content pre {
    overflow: auto;
    padding: 16px;
    border-radius: 12px;
    border: 1px solid var(--manual-border);
    background: rgba(0,0,0,0.32);
}

.manual-content pre code {
    background: transparent;
    padding: 0;
}

.manual-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0;
    overflow: hidden;
    border-radius: 10px;
}

.manual-content th,
.manual-content td {
    border: 1px solid rgba(255,255,255,0.12);
    padding: 10px 12px;
    text-align: left;
    vertical-align: top;
}

.manual-content th {
    background: rgba(255,255,255,0.08);
    color: var(--manual-text);
}

.manual-content img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.12);
    margin: 12px 0;
}

.manual-content figure {
    margin: 20px 0;
}

.manual-content hr {
    border: 0;
    border-top: 1px solid var(--manual-border);
    margin: 30px 0;
}

.manual-toc {
    position: sticky;
    top: 88px;
    max-height: calc(100vh - 110px);
    overflow: auto;
    border: 1px solid var(--manual-border);
    border-radius: 18px;
    background: rgba(255,255,255,0.045);
    padding: 18px;
}

.manual-toc-title {
    color: var(--manual-soft);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.manual-toc a {
    display: block;
    color: var(--manual-muted);
    text-decoration: none;
    line-height: 1.45;
    padding: 7px 0;
    font-size: 0.92rem;
}

.manual-toc a:hover { color: var(--manual-text); }
.manual-toc .toc-h3 { padding-left: 14px; font-size: 0.86rem; }

@media (max-width: 980px) {
    .manual-layout {
        grid-template-columns: 1fr;
        padding: 28px 18px 64px;
    }
    .manual-toc { position: static; max-height: none; }
    .manual-topbar { padding: 0 18px; align-items: flex-start; flex-direction: column; justify-content: center; padding-top: 12px; padding-bottom: 12px; }
}