/* ------------------------------------------------------------------
       Ambient Glow Bubbles (Identical to Home Page)
       ------------------------------------------------------------------ */
    .page-ambient {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 100vh;
        z-index: 0;
        pointer-events: none;
        overflow: hidden;
        -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 45%, transparent 85%);
                mask-image: linear-gradient(to bottom, #000 0%, #000 45%, transparent 85%);
    }

    .hero-glow-blob {
        position: absolute !important;
        border-radius: 50%;
        pointer-events: none;
        z-index: 0 !important;
        opacity: 0.26;
        will-change: transform;
        transform: translateZ(0);
    }

    .hero-blob-orange {
        width: 680px;
        height: 680px;
        background: radial-gradient(circle, var(--glow-color) 0%, rgba(249, 115, 22, 0.18) 32%, transparent 68%);
        top: -10%;
        left: 14%;
        animation: floatBlob1 22s cubic-bezier(0.37, 0, 0.63, 1) infinite;
    }

    .hero-blob-gray {
        width: 720px;
        height: 720px;
        background: radial-gradient(circle, rgba(148, 163, 184, 0.35) 0%, rgba(148, 163, 184, 0.14) 32%, transparent 68%);
        top: 10%;
        right: -4%;
        opacity: 0.45;
        animation: floatBlob2 28s cubic-bezier(0.37, 0, 0.63, 1) infinite;
    }

    .hero-blob-accent {
        width: 480px;
        height: 480px;
        background: radial-gradient(circle, rgba(249, 115, 22, 0.35) 0%, rgba(249, 115, 22, 0.12) 32%, transparent 68%);
        top: 36%;
        left: 36%;
        opacity: 0.4;
        animation: floatBlob3 34s cubic-bezier(0.45, 0, 0.55, 1) infinite;
    }

    @keyframes floatBlob1 {
        0%   { transform: translate(0, 0) scale(1); }
        22%  { transform: translate(130px, 70px) scale(1.14); }
        48%  { transform: translate(-70px, 150px) scale(0.9); }
        74%  { transform: translate(-140px, 55px) scale(1.08); }
        100% { transform: translate(0, 0) scale(1); }
    }

    @keyframes floatBlob2 {
        0%   { transform: translate(0, 0) scale(1); }
        26%  { transform: translate(-160px, -95px) scale(1.15); }
        54%  { transform: translate(110px, -130px) scale(0.88); }
        80%  { transform: translate(80px, 75px) scale(1.06); }
        100% { transform: translate(0, 0) scale(1); }
    }

    @keyframes floatBlob3 {
        0%   { transform: translate(0, 0) scale(1); }
        33%  { transform: translate(105px, -80px) scale(1.2); }
        66%  { transform: translate(-95px, 70px) scale(0.85); }
        100% { transform: translate(0, 0) scale(1); }
    }

    @media (prefers-reduced-motion: reduce) {
        .hero-glow-blob { animation: none !important; }
    }

    /* ------------------------------------------------------------------
       /proxy-types/ Cluster Hub Styles.
       ------------------------------------------------------------------ */
    .pth-page {
        --pth-shell: 1160px;
        position: relative;
    }

    /* Hero Section (div, NOT header, so base.html sticky-header rule never applies!) */
    .pth-hero {
        position: relative;
        text-align: center;
        max-width: var(--pth-shell);
        margin: 0 auto;
        padding: 3.5rem 1.5rem 2.5rem;
        z-index: 2;
    }
    .pth-hero-eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.35rem 0.95rem;
        border-radius: 999px;
        background: var(--bg-secondary);
        border: 1px solid var(--border);
        font-family: var(--font-mono);
        font-size: 0.72rem;
        font-weight: 600;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        color: var(--primary);
        margin-bottom: 1.4rem;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    }
    .pth-hero-eyebrow-dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--primary);
        box-shadow: 0 0 0 3px var(--glow-color);
    }
    .pth-hero-title {
        font-family: var(--font-heading);
        font-size: clamp(2.3rem, 5.2vw, 3.8rem);
        font-weight: 800;
        color: var(--text-primary);
        line-height: 1.1;
        margin-bottom: 1.2rem;
        letter-spacing: -0.035em;
        text-wrap: balance;
    }
    .pth-hero-title-line1 { display: block; color: var(--text-primary); }
    .pth-hero-title-line2 {
        display: block;
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover, var(--primary)) 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: var(--primary);
    }
    .pth-hero-desc {
        font-size: clamp(1rem, 1.5vw, 1.12rem);
        color: var(--text-secondary);
        max-width: 64ch;
        margin: 0 auto 2rem auto;
        line-height: 1.65;
        text-wrap: pretty;
    }
    .pth-hero-actions {
        display: flex;
        justify-content: center;
        gap: 0.75rem;
        flex-wrap: wrap;
        margin-bottom: 2.75rem;
    }
    .pth-hero-actions .btn {
        padding: 0.75rem 1.6rem;
        border-radius: 12px;
        font-weight: 600;
        font-size: 0.92rem;
        cursor: pointer;
        transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, color 0.18s ease;
        text-decoration: none;
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
    }
    .pth-hero-actions .btn-primary {
        background: var(--primary);
        color: var(--white);
        border: 1px solid var(--primary);
        box-shadow: 0 4px 14px var(--glow-color);
    }
    [data-theme="dark"] .pth-hero-actions .btn-primary { color: #111; }
    .pth-hero-actions .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 24px var(--glow-color);
    }
    .pth-hero-actions .btn-secondary {
        background: var(--bg-secondary);
        border: 1px solid var(--border);
        color: var(--text-primary);
    }
    .pth-hero-actions .btn-secondary:hover {
        transform: translateY(-2px);
        border-color: var(--primary);
        color: var(--primary);
    }

    /* Stat strip */
    .pth-hero-stats {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        max-width: 960px;
        margin: 0 auto;
        border: 1px solid var(--border);
        border-radius: 16px;
        background: var(--bg-secondary);
        overflow: hidden;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    }
    .pth-hero-stat {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.35rem;
        padding: 1.25rem 1rem;
        border-left: 1px solid var(--border);
    }
    .pth-hero-stat:first-child { border-left: none; }
    .pth-hero-stat .number {
        display: block;
        font-family: var(--font-heading);
        font-weight: 800;
        font-size: clamp(1.2rem, 1.8vw, 1.55rem);
        color: var(--primary);
        line-height: 1.15;
        letter-spacing: -0.02em;
    }
    .pth-hero-stat .label {
        display: block;
        font-size: 0.78rem;
        line-height: 1.4;
        color: var(--text-secondary);
        font-weight: 500;
    }

    /* Category Landmarks Rail (div, NOT nav, so base.html nav rules do not override height) */
    .pth-toc {
        display: flex !important;
        flex-wrap: wrap !important;
        justify-content: center !important;
        align-items: center !important;
        gap: 0.5rem !important;
        height: auto !important;
        max-width: var(--pth-shell);
        margin: 2rem auto 0;
        padding: 0 1.5rem;
        border: none !important;
        background: transparent !important;
    }
    .pth-toc a {
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
        padding: 0.45rem 0.95rem;
        border: 1px solid var(--border);
        border-radius: 999px;
        background: var(--bg-primary);
        color: var(--text-secondary);
        font-size: 0.82rem;
        font-weight: 600;
        text-decoration: none;
        transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease, transform 0.15s ease;
    }
    .pth-toc a:hover {
        border-color: var(--primary);
        color: var(--text-primary);
        background: var(--bg-secondary);
        transform: translateY(-1px);
    }
    .pth-toc .pxm2-icon { color: var(--primary); }

    /* Layout Container */
    .pth-layout-container {
        max-width: var(--pth-shell);
        margin: 0 auto;
        padding: 3rem 1.5rem 0 1.5rem;
        box-sizing: border-box;
    }
    .pth-layout-container [id] { scroll-margin-top: 100px; }

    /* Section Rhythm */
    .pth-section {
        margin: 4.5rem 0;
        width: 100%;
        box-sizing: border-box;
    }
    .pth-layout-container > .pth-section:first-child { margin-top: 1rem; }

    .pth-section-header {
        margin-bottom: 2.25rem;
    }
    .pth-section-title {
        font-family: var(--font-heading);
        font-size: clamp(1.65rem, 3vw, 2.1rem);
        font-weight: 800;
        letter-spacing: -0.025em;
        color: var(--text-primary);
        margin: 0 0 0.5rem;
        position: relative;
    }
    .pth-section-subtitle {
        font-size: 1.02rem;
        color: var(--text-secondary);
        margin: 0;
        max-width: 72ch;
        line-height: 1.65;
    }

    /* Category Pillar Groups */
    .pth-group {
        margin-bottom: 3.5rem;
        background: var(--bg-primary);
        border: 1px solid var(--border);
        border-radius: 20px;
        padding: 2rem 2rem 2.25rem;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
    }
    .pth-group:last-child { margin-bottom: 0; }
    .pth-group-head {
        display: flex;
        align-items: center;
        gap: 0.85rem;
        padding-bottom: 0.9rem;
        margin-bottom: 0.5rem;
        border-bottom: 1px solid var(--border);
    }
    .pth-group-num {
        font-family: var(--font-mono);
        font-size: 0.75rem;
        font-weight: 700;
        letter-spacing: 0.08em;
        color: var(--primary);
        background: var(--bg-secondary);
        border: 1px solid var(--border);
        border-radius: 8px;
        padding: 0.35rem 0.6rem;
        line-height: 1;
        flex-shrink: 0;
    }
    .pth-group-name {
        font-family: var(--font-heading);
        font-size: clamp(1.25rem, 2.4vw, 1.5rem);
        font-weight: 800;
        letter-spacing: -0.02em;
        margin: 0;
        color: var(--text-primary);
    }
    .pth-group-tagline {
        color: var(--text-secondary);
        line-height: 1.6;
        margin: 0 0 1.75rem;
        font-size: 0.95rem;
        max-width: 75ch;
    }
    .pth-group-soon {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 0.85rem;
        color: var(--text-secondary);
        border: 1px dashed var(--border);
        border-radius: 12px;
        padding: 0.9rem 1.25rem;
        background: var(--bg-secondary);
    }
    .pth-group-soon .pxm2-icon { color: var(--primary); flex-shrink: 0; }

    /* Directory Card Grid */
    .pth-card-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
        gap: 1.1rem;
    }
    .pth-card {
        position: relative;
        display: flex;
        flex-direction: column;
        padding: 1.6rem 1.5rem 1.5rem;
        border: 1px solid var(--border);
        border-radius: 16px;
        background: var(--bg-secondary);
        text-decoration: none;
        color: inherit;
        overflow: hidden;
        transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s ease, box-shadow 0.2s ease;
    }
    .pth-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 2px;
        background: linear-gradient(90deg, var(--primary), transparent 70%);
        opacity: 0;
        transition: opacity 0.2s ease;
    }
    .pth-card:hover {
        transform: translateY(-3px);
        border-color: var(--primary);
        box-shadow: 0 10px 28px var(--glow-color);
    }
    .pth-card:hover::before { opacity: 1; }
    .pth-card-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 0.75rem;
        margin-bottom: 1.1rem;
    }
    .pth-card-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 2.6rem;
        height: 2.6rem;
        border-radius: 12px;
        background: var(--bg-tertiary);
        border: 1px solid var(--border);
        color: var(--primary);
        flex-shrink: 0;
    }
    .pth-card-arrow {
        color: var(--primary);
        flex-shrink: 0;
        opacity: 0.45;
        transition: transform 0.2s ease, opacity 0.2s ease;
    }
    .pth-card:hover .pth-card-arrow {
        transform: translateX(4px);
        opacity: 1;
    }
    .pth-card h3 {
        margin: 0 0 0.55rem;
        font-family: var(--font-heading);
        font-size: 1.1rem;
        font-weight: 700;
        line-height: 1.3;
        color: var(--text-primary);
        text-wrap: balance;
    }
    .pth-card p {
        margin: 0 0 1.25rem;
        font-size: 0.88rem;
        line-height: 1.6;
        color: var(--text-secondary);
        flex: 1;
    }
    .pth-card-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 0.4rem;
        margin-top: auto;
        padding-top: 0.25rem;
    }
    .pth-card-tag {
        font-family: var(--font-mono);
        font-size: 0.7rem;
        font-weight: 600;
        color: var(--text-secondary);
        padding: 0.25rem 0.6rem;
        border: 1px solid var(--border);
        border-radius: 6px;
        background: var(--bg-tertiary);
        white-space: nowrap;
    }

    /* Universal Feature Cards Grid */
    .pth-features-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        gap: 1.1rem;
        margin-top: 1.5rem;
    }
    .pth-feature-card {
        display: flex;
        flex-direction: column;
        padding: 1.6rem 1.4rem;
        border: 1px solid var(--border);
        border-radius: 16px;
        background: var(--bg-secondary);
        transition: border-color 0.2s ease, transform 0.2s ease;
    }
    .pth-feature-card:hover {
        border-color: var(--primary);
        transform: translateY(-2px);
    }
    .pth-feature-icon {
        width: 44px;
        height: 44px;
        border-radius: 12px;
        background: var(--bg-tertiary);
        border: 1px solid var(--border);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--primary);
        margin-bottom: 1.1rem;
    }
    .pth-feature-card h3 {
        margin: 0 0 0.5rem;
        font-family: var(--font-heading);
        font-size: 1.08rem;
        font-weight: 700;
        color: var(--text-primary);
    }
    .pth-feature-card p {
        margin: 0;
        font-size: 0.88rem;
        line-height: 1.6;
        color: var(--text-secondary);
    }

    /* Decision Table Card */
    .pth-table-card {
        border: 1px solid var(--border);
        border-radius: 16px;
        background: var(--bg-secondary);
        overflow: hidden;
        margin-top: 1.5rem;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
    }
    .pth-table-card .pxa-table-wrap {
        margin: 0;
        border: none;
        border-radius: 0;
    }
    .pth-decision-tip {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1.1rem;
        margin-top: 1.25rem;
    }
    .pth-tip-card {
        display: flex;
        gap: 0.85rem;
        align-items: flex-start;
        background: var(--bg-secondary);
        border: 1px solid var(--border);
        border-radius: 12px;
        padding: 1.1rem 1.25rem;
    }
    .pth-tip-icon {
        color: var(--primary);
        flex-shrink: 0;
        margin-top: 0.15rem;
    }
    .pth-tip-body h4 {
        margin: 0 0 0.35rem;
        font-family: var(--font-heading);
        font-size: 0.95rem;
        font-weight: 700;
        color: var(--text-primary);
    }
    .pth-tip-body p {
        margin: 0;
        font-size: 0.85rem;
        line-height: 1.55;
        color: var(--text-secondary);
    }

    @media (max-width: 820px) {
        .pth-decision-tip { grid-template-columns: 1fr; }
        .pth-group { padding: 1.5rem 1.25rem; }
    }

    @media (max-width: 720px) {
        .pth-hero { padding: 2.5rem 1.25rem 2rem; }
        .pth-toc {
            flex-wrap: nowrap !important;
            justify-content: flex-start !important;
            overflow-x: auto;
            scrollbar-width: none;
            padding: 0 1.25rem 0.25rem;
        }
        .pth-toc::-webkit-scrollbar { display: none; }
        .pth-toc a { white-space: nowrap; }
        .pth-hero-stats { grid-template-columns: repeat(2, 1fr); }
        .pth-hero-stat:nth-child(3) { border-left: none; }
        .pth-hero-stat:nth-child(n + 3) { border-top: 1px solid var(--border); }
        .pth-layout-container { padding-top: 2rem; }
        .pth-section { margin: 3.5rem 0; }
    }