.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.operations {
    background: #d1fae5;
    color: #065f46;
}

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

.executive-summary,
.source-freshness,
.lesson-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,
.final-rule p,
.lesson-box {
    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,
.metric-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;
}

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

.control-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;
}

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

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

.control-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;
}

.chart-visual {
    background: #152238;
    border-radius: 8px;
    padding: 28px;
    margin: 24px 0;
}

.chart-title {
    color: #cbd5e1;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 24px;
}

.chart-area {
    height: 210px;
    position: relative;
    border-left: 2px solid #64748b;
    border-bottom: 2px solid #64748b;
    margin-left: 62px;
}

.y-label {
    position: absolute;
    left: -10px;
    transform: translateX(-100%);
    color: #cbd5e1;
    font-size: 0.76rem;
    white-space: nowrap;
}

.y-label.ucl {
    top: 11%;
}

.y-label.median {
    top: 47%;
}

.y-label.lcl {
    top: 81%;
}

.limit-line {
    position: absolute;
    left: 0;
    right: 0;
    height: 0;
    border-top: 2px dashed #fb7185;
}

.ucl-line {
    top: 12%;
}

.median-line {
    top: 48%;
    border-top-style: solid;
    border-color: #38bdf8;
}

.lcl-line {
    top: 82%;
}

.data-point {
    position: absolute;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #38bdf8;
    transform: translate(-50%, -50%);
}

.data-point.alert {
    width: 15px;
    height: 15px;
    background: #fb7185;
    box-shadow: 0 0 14px rgba(251, 113, 133, 0.58);
}

.p01 { left: 9%; top: 47%; }
.p02 { left: 17%; top: 42%; }
.p03 { left: 25%; top: 53%; }
.p04 { left: 33%; top: 45%; }
.p05 { left: 41%; top: 50%; }
.p06 { left: 49%; top: 55%; }
.p07 { left: 57%; top: 49%; }
.p08 { left: 66%; top: 84%; }
.p09 { left: 74%; top: 87%; }
.p10 { left: 82%; top: 90%; }
.p11 { left: 90%; top: 86%; }

.chart-legend {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-top: 22px;
    color: #cbd5e1;
    font-size: 0.84rem;
}

.chart-legend span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.legend-dot.normal {
    background: #38bdf8;
}

.legend-dot.alert {
    background: #fb7185;
}

.legend-line {
    width: 20px;
    border-top: 2px dashed #fb7185;
    display: inline-block;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin: 18px 0;
}

.metric-card {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 18px;
    background: #ffffff;
}

.metric-card.leading {
    border-top: 4px solid #0f766e;
}

.metric-card.confirm {
    border-top: 4px solid #1e3a8a;
}

.metric-card.context {
    border-top: 4px solid #b45309;
}

.metric-card h3 {
    margin: 0 0 10px;
    color: var(--text-primary);
    font-size: 1.02rem;
}

.metric-card p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.55;
}

.lesson-box {
    border-left: 4px solid #b45309;
    background: #fffbeb;
}

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

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

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

    .control-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: 168px;
    }

    .chart-visual {
        padding: 20px 14px;
    }

    .chart-area {
        margin-left: 54px;
        height: 190px;
    }

    .y-label {
        font-size: 0.68rem;
    }

    .chart-legend {
        justify-content: flex-start;
        gap: 12px;
    }
}