.auth-copy {
    margin: 20px 0;
}

.auth-copy-muted {
    color: var(--text-secondary);
}

.confidential-banner {
    background: #1e3a8a;
    border-radius: 6px;
    padding: 10px 16px;
    max-width: 900px;
    margin: 50px auto 24px;
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: #ffffff;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.guide-header {
    max-width: 900px;
    margin: 0 auto 40px;
}

.guide-header h1 {
    font-size: 2.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.guide-subtitle {
    font-size: 1.08rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0 0 16px;
}

.guide-meta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.82rem;
}

.guide-tag {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: #dbeafe;
    color: #1e40af;
}

.guide-tag.product {
    background: #d1fae5;
    color: #065f46;
}

.guide-tag.analytics {
    background: #f3e8ff;
    color: #6b21a8;
}

.guide-content {
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.7;
}

.executive-summary,
.source-freshness,
.formula-box,
.final-rule {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin: 24px 0;
    background: #f8fafc;
}

.executive-summary {
    border-left: 4px solid #1e3a8a;
}

.executive-summary h2,
.final-rule h2 {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.executive-summary p,
.source-freshness p,
.formula-box p,
.final-rule p {
    color: var(--text-primary);
    margin-bottom: 0;
}

.access-summary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin: 24px 0;
}

.access-summary > div {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 14px;
    background: #ffffff;
}

.access-label,
.source-label,
.formula-label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.access-summary span:last-child {
    color: var(--text-primary);
    font-size: 0.92rem;
}

.source-freshness {
    border-left: 4px solid #0f766e;
    background: #f0fdfa;
}

.sig-route-groups {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin: 28px 0 36px;
}

.sig-route-groups a {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 132px;
    padding: 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: #ffffff;
    color: var(--text-primary);
    text-decoration: none;
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.sig-route-groups a:hover {
    border-color: var(--transcend-blue);
    transform: translateY(-1px);
}

.sig-route-groups strong {
    color: #1e3a8a;
    font-size: 0.95rem;
}

.sig-route-groups span {
    color: var(--text-secondary);
    font-size: 0.86rem;
    line-height: 1.5;
}

.section {
    margin: 44px 0;
}

.section h2 {
    font-size: 1.45rem;
    font-weight: 650;
    color: var(--text-primary);
    margin: 0 0 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.section p {
    color: var(--text-primary);
    margin-bottom: 16px;
}

.guide-table {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0;
    font-size: 0.92rem;
}

.guide-table th,
.guide-table td {
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    text-align: left;
    vertical-align: top;
}

.guide-table th {
    background: #eef2f7;
    color: var(--text-primary);
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.guide-table td {
    color: var(--text-primary);
    background: #ffffff;
}

.guide-table a {
    color: var(--transcend-blue);
    font-weight: 600;
}

.formula-box {
    border-left: 4px solid #7c3aed;
    background: #faf5ff;
}

.formula-box code {
    display: block;
    padding: 12px 14px;
    margin: 8px 0 12px;
    border-radius: 6px;
    background: #1f2937;
    color: #f8fafc;
    font-size: 0.88rem;
    overflow-x: auto;
}

.signal-table td:first-child {
    font-weight: 650;
}

.final-rule {
    border-left: 4px solid #1e3a8a;
}

.footer-note,
.comments-empty-help {
    margin-top: 8px;
}

@media (max-width: 900px) {
    .access-summary,
    .sig-route-groups {
        grid-template-columns: 1fr;
    }

    .sig-route-groups a {
        min-height: auto;
    }
}

@media (max-width: 640px) {
    .guide-header h1 {
        font-size: 1.58rem;
    }

    .guide-subtitle {
        font-size: 1rem;
    }

    .guide-table {
        display: block;
        overflow-x: auto;
        white-space: normal;
    }

    .guide-table th,
    .guide-table td {
        min-width: 170px;
    }
}