.auth-body {
    justify-content: flex-start;
}

.page-shell-auth {
    max-width: 1180px;
}

.usage-guide {
    display: grid;
    gap: 24px;
}

.usage-guide-hero,
.usage-guide-search-card,
.usage-guide-ai-card,
.usage-guide-toc,
.usage-guide-section,
.usage-guide-limit {
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid var(--border);
    border-radius: 24px;
    box-shadow: var(--shadow-sm);
}

.usage-guide-hero {
    overflow: hidden;
}

.usage-guide-brand-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 18px 24px;
    border-bottom: 1px solid var(--border);
}

.usage-guide-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    font-size: 18px;
    font-weight: 750;
}

.usage-guide-logo {
    width: 38px;
    height: 38px;
}

.usage-guide-login {
    flex: 0 0 auto;
}

.usage-guide-hero-content {
    padding: 46px clamp(24px, 6vw, 72px) 52px;
    background:
        radial-gradient(circle at 92% 12%, rgba(47, 102, 77, 0.15), transparent 30%),
        linear-gradient(145deg, #ffffff 0%, #f0f6f2 100%);
}

.usage-guide-eyebrow,
.usage-guide-section-index {
    margin-bottom: 8px;
    color: var(--primary-3);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.11em;
    text-transform: uppercase;
}

.usage-guide-hero h1 {
    max-width: 760px;
    margin-bottom: 14px;
    font-size: clamp(36px, 6vw, 58px);
    line-height: 1.04;
    letter-spacing: -0.035em;
}

.usage-guide-lead {
    max-width: 780px;
    margin-bottom: 24px;
    color: var(--text-soft);
    font-size: 18px;
}

.usage-guide-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.usage-guide-meta span {
    padding: 7px 11px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    color: var(--text-soft);
    font-size: 13px;
    font-weight: 650;
}

.usage-guide-search-card,
.usage-guide-ai-card,
.usage-guide-toc,
.usage-guide-section,
.usage-guide-limit {
    padding: clamp(22px, 4vw, 38px);
}

.usage-guide-search-card {
    display: grid;
    grid-template-columns: minmax(260px, 0.9fr) minmax(300px, 1.1fr);
    align-items: end;
    column-gap: 32px;
}

.usage-guide-search-card h2,
.usage-guide-ai-card h2,
.usage-guide-toc h2,
.usage-guide-section h2,
.usage-guide-limit h2 {
    margin-bottom: 8px;
}

.usage-guide-search-card p,
.usage-guide-ai-card p,
.usage-guide-section-heading p,
.usage-guide-limit p {
    color: var(--text-soft);
}

.usage-guide-search-label {
    grid-column: 2;
    margin-bottom: 7px;
    font-size: 13px;
}

.usage-guide-search-card input {
    grid-column: 2;
    padding: 14px 16px;
}

.usage-guide-search-status {
    grid-column: 2;
    min-height: 20px;
    margin: 7px 0 0;
    font-size: 13px;
}

.usage-guide-ai-card {
    border-color: #bad0c1;
    background: linear-gradient(145deg, #f8fcf9, #eef6f1);
}

.usage-guide-ai-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 24px;
}

.usage-guide-ai-heading > div {
    max-width: 740px;
}

.usage-guide-prompt {
    margin: 22px 0 14px;
    padding: 20px;
    overflow: auto;
    white-space: pre-wrap;
    border: 1px solid #b8cabd;
    border-radius: 16px;
    background: #173d2d;
    color: #f3faf5;
    font: 14px/1.65 "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

.usage-guide-copy-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
}

.usage-guide-copy-status {
    color: var(--primary-2);
    font-size: 14px;
    font-weight: 650;
}

.usage-guide-ai-rules {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid #cadbd0;
}

.usage-guide-ai-rules h3 {
    margin-bottom: 12px;
    font-size: 18px;
}

.usage-guide-ai-rules ul,
.usage-guide-topic ol,
.usage-guide-topic ul {
    margin: 0;
    padding-left: 22px;
}

.usage-guide-ai-rules li,
.usage-guide-topic li {
    margin-bottom: 8px;
}

.usage-guide-toc-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 9px;
}

.usage-guide-toc-grid a {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 13px;
    background: var(--surface-2);
    font-weight: 650;
}

.usage-guide-toc-grid a:hover {
    border-color: var(--border-strong);
    background: var(--primary-soft);
}

.usage-guide-section {
    scroll-margin-top: 22px;
}

.usage-guide-section-heading {
    display: grid;
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 16px;
    margin-bottom: 22px;
}

.usage-guide-section-index {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    margin: 0;
    border-radius: 13px;
    background: var(--primary-soft);
}

.usage-guide-section-heading p:last-child {
    margin-bottom: 0;
}

.usage-guide-role-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.usage-guide-role-card,
.usage-guide-topic {
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--surface-2);
}

.usage-guide-role-card h3,
.usage-guide-topic h3 {
    margin-bottom: 9px;
    font-size: 20px;
}

.usage-guide-role-card p {
    margin-bottom: 0;
    color: var(--text-soft);
}

.usage-guide-topic-list {
    display: grid;
    gap: 14px;
}

.usage-guide-path {
    margin-bottom: 16px;
    padding: 10px 12px;
    border-left: 3px solid var(--primary-3);
    border-radius: 0 10px 10px 0;
    background: var(--primary-soft);
    color: var(--text);
}

.usage-guide-notes {
    margin-top: 18px;
    padding: 15px 16px;
    border: 1px solid #ead7a6;
    border-radius: 14px;
    background: #fff9ed;
    color: #59420f;
}

.usage-guide-notes > strong {
    display: block;
    margin-bottom: 8px;
}

.usage-guide-limit {
    border-color: #c9d8cd;
    background: var(--primary-soft);
}

.usage-guide-limit p {
    max-width: 900px;
    margin-bottom: 0;
}

.usage-guide-no-results {
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: #fff;
    text-align: center;
}

[hidden] {
    display: none !important;
}

@media (max-width: 760px) {
    .page-shell-auth {
        padding: 14px 12px 28px;
    }

    .usage-guide {
        gap: 14px;
    }

    .usage-guide-brand-row {
        padding: 14px 16px;
    }

    .usage-guide-brand span {
        display: none;
    }

    .usage-guide-hero-content {
        padding: 32px 20px 36px;
    }

    .usage-guide-lead {
        font-size: 16px;
    }

    .usage-guide-search-card,
    .usage-guide-role-grid,
    .usage-guide-toc-grid {
        grid-template-columns: 1fr;
    }

    .usage-guide-search-label,
    .usage-guide-search-card input,
    .usage-guide-search-status {
        grid-column: 1;
    }

    .usage-guide-search-label {
        margin-top: 12px;
    }

    .usage-guide-ai-heading {
        flex-direction: column;
    }

    .usage-guide-ai-heading .btn,
    .usage-guide-copy-row button {
        width: 100%;
    }

    .usage-guide-section-heading {
        grid-template-columns: 40px minmax(0, 1fr);
        gap: 12px;
    }

    .usage-guide-section-index {
        width: 38px;
        height: 38px;
    }

    .usage-guide-role-card,
    .usage-guide-topic {
        padding: 18px;
    }
}

@media print {
    .usage-guide-login,
    .usage-guide-search-card,
    .usage-guide-copy-row,
    .usage-guide-toc,
    footer {
        display: none !important;
    }

    .page-shell-auth {
        max-width: none;
        padding: 0;
    }

    .usage-guide-hero,
    .usage-guide-ai-card,
    .usage-guide-section,
    .usage-guide-limit {
        box-shadow: none;
        break-inside: avoid;
    }
}