* { margin: 0; padding: 0; box-sizing: border-box; }

    :root {
        --bg: #0a0a0f;
        --bg-card: rgba(255, 255, 255, 0.055);
        --bg-soft: rgba(255, 255, 255, 0.08);
        --border: rgba(255, 255, 255, 0.10);
        --border-hover: rgba(255, 255, 255, 0.18);
        --text: #fafafa;
        --text-secondary: #b8b8c6;
        --text-muted: #8e8e9c;
        --accent: #818cf8;
        --accent-hover: #a5b4fc;
        --accent-soft: rgba(99, 102, 241, 0.12);
        --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
        --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
        --shadow-lg: 0 8px 32px rgba(0,0,0,0.6);
        --radius-sm: 8px;
        --radius: 12px;
        --radius-lg: 16px;
    }

    body {
        font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
        background: var(--bg);
        color: var(--text);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
        min-height: 100vh;
    }

    /* ===== HEADER ===== */
    header {
        margin: 1rem auto 0; max-width: 1440px; width: calc(100% - 2.5rem);
        padding: 0.65rem 1.75rem;
        border: 1px solid var(--border);
        border-radius: 18px;
        background: rgba(10, 10, 15, 0.62);
        backdrop-filter: blur(24px) saturate(1.5);
        -webkit-backdrop-filter: blur(24px) saturate(1.5);
        box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
        position: sticky;
        top: 0.75rem;
        z-index: 100;
    }
    html.light header {
        background: rgba(250, 250, 250, 0.72);
        border-color: rgba(0, 0, 0, 0.10);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    }
    .header-inner {
        max-width: 960px;
        margin: 0 auto;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        text-decoration: none;
        color: var(--text);
    }
    .logo-icon {
        width: 36px;
        height: 36px;
        background: linear-gradient(135deg, #6366f1, #a78bfa);
        border-radius: 9px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 1rem;
    }
    .logo-text {
        font-size: 1.15rem;
        font-weight: 700;
        letter-spacing: -0.02em;
    }
    .logo-badge {
        font-size: 0.55rem;
        background: linear-gradient(135deg, #6366f1, #818cf8);
        color: white;
        padding: 0.12rem 0.35rem;
        border-radius: 20px;
        font-weight: 700;
        margin-left: -0.25rem;
        margin-top: -0.7rem;
    }
    nav { display: flex; gap: 0.25rem; align-items: center; }
    nav a {
        color: var(--text-secondary);
        text-decoration: none;
        padding: 0.45rem 0.85rem;
        border-radius: 8px;
        transition: all 0.2s;
        font-size: 0.875rem;
        font-weight: 500;
    }
    nav a:hover { color: var(--text); background: var(--bg-soft); }
    nav a.active {
        color: var(--accent);
        background: var(--accent-soft);
    }
    .theme-toggle {
        width: 34px;
        height: 34px;
        border-radius: 8px;
        border: 1px solid var(--border);
        background: transparent;
        color: var(--text-secondary);
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.9rem;
        transition: all 0.2s;
        margin-left: 0.4rem;
    }
    .theme-toggle:hover { border-color: var(--accent); color: var(--accent); }

    /* ===== AMBIENT BACKGROUND ===== */
    .ambient-blobs { position: fixed; inset: 0; z-index: -6; pointer-events: none; overflow: hidden; }
    .ambient-blob {
        position: absolute; border-radius: 50%; filter: blur(70px); opacity: 0.5;
        animation: blobFloat 24s ease-in-out infinite;
    }
    .ambient-blob:nth-child(1) { width: 380px; height: 380px; top: -80px; left: -100px; background: radial-gradient(circle, rgba(99,102,241,0.35), transparent 70%); }
    .ambient-blob:nth-child(2) { width: 320px; height: 320px; bottom: -60px; right: -80px; background: radial-gradient(circle, rgba(192,132,252,0.28), transparent 70%); animation-delay: -8s; }
    .ambient-blob:nth-child(3) { width: 260px; height: 260px; top: 40%; left: 60%; background: radial-gradient(circle, rgba(129,140,248,0.22), transparent 70%); animation-delay: -16s; }
    @keyframes blobFloat {
        0%, 100% { transform: translate(0,0) scale(1); }
        33% { transform: translate(40px, -30px) scale(1.08); }
        66% { transform: translate(-30px, 25px) scale(0.94); }
    }
    .particles { position: fixed; inset: 0; z-index: -5; pointer-events: none; overflow: hidden; }
    .particle {
        position: absolute; border-radius: 50%;
        background: rgba(129,140,248,0.6);
        animation: particleFloat linear infinite;
    }
    @keyframes particleFloat {
        0% { transform: translateY(0) translateX(0); opacity: 0; }
        10% { opacity: 0.7; }
        90% { opacity: 0.4; }
        100% { transform: translateY(-110vh) translateX(30px); opacity: 0; }
    }
    ::selection { background: rgba(129,140,248,0.35); color: #fff; }

    /* ===== WRAPPER ===== */
    .wrapper {
        max-width: 960px;
        margin: 0 auto;
        padding: 0 2rem;
    }

    /* ===== HERO / INTRO ===== */
    .page-hero {
        padding: 4rem 0 3rem;
        text-align: center;
    }
    .page-hero .eyebrow {
        display: inline-block;
        font-size: 0.75rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.08em;
        color: var(--accent);
        background: var(--accent-soft);
        border: 1px solid rgba(129,140,248,0.25);
        padding: 0.3rem 0.75rem;
        border-radius: 20px;
        margin-bottom: 1rem;
    }
    .page-hero h1 {
        font-size: clamp(1.8rem, 4vw, 2.6rem);
        font-weight: 800;
        letter-spacing: -0.03em;
        line-height: 1.2;
        margin-bottom: 1rem;
        background: linear-gradient(to right, #ffffff, #d4d4d8 60%, #818cf8);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    .page-hero .meta-line {
        font-size: 0.85rem;
        color: var(--text-muted);
        font-weight: 500;
        margin-bottom: 1.5rem;
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
    }
    .page-hero .meta-line::before {
        content: '';
        width: 6px; height: 6px; border-radius: 50%;
        background: #34d399;
        box-shadow: 0 0 8px rgba(52,211,153,0.8);
        display: inline-block;
    }
    .page-hero p {
        max-width: 620px;
        margin: 0 auto;
        color: var(--text-secondary);
        font-size: 1.05rem;
        line-height: 1.7;
    }

    /* ===== COMPARISON TABLE ===== */
    .section {
        padding: 3rem 0;
    }
    .section-label {
        font-size: 0.75rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.08em;
        color: var(--accent);
        opacity: 0.9;
        margin-bottom: 0.75rem;
    }
    .section-title {
        font-size: 1.5rem;
        font-weight: 700;
        letter-spacing: -0.02em;
        margin-bottom: 0.5rem;
    }
    .section-sub {
        color: var(--text-secondary);
        font-size: 0.95rem;
        margin-bottom: 2rem;
        max-width: 600px;
    }

    .tool-list {
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }

    .tool-card {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 1.5rem 1.75rem;
        transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
        display: flex;
        gap: 1.25rem;
        align-items: flex-start;
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        position: relative;
        overflow: hidden;
    }
    .tool-card::before {
        content: '';
        position: absolute;
        top: 0; left: 0; right: 0;
        height: 2px;
        background: linear-gradient(90deg, transparent, rgba(129,140,248,0.5), transparent);
        opacity: 0;
        transition: opacity 0.3s;
    }
    .tool-card:hover::before { opacity: 1; }
    .tool-card:hover {
        border-color: rgba(129,140,248,0.3);
        box-shadow: 0 0 32px rgba(99,102,241,0.12);
        transform: translateY(-2px);
    }

    .tool-icon {
        width: 52px;
        height: 52px;
        border-radius: 12px;
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.4rem;
        color: white;
    }
    .tool-icon.leonardo { background: linear-gradient(135deg, #b48c6c, #d4a87a); }
    .tool-icon.playground { background: linear-gradient(135deg, #6366f1, #818cf8); }
    .tool-icon.firefly { background: linear-gradient(135deg, #ff6b35, #ff8c5a); }
    .tool-icon.bing { background: linear-gradient(135deg, #00897b, #4db6ac); }
    .tool-icon.craiyon { background: linear-gradient(135deg, #787878, #a3a3a3); }

    .tool-body { flex: 1; min-width: 0; }

    .tool-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 1rem;
        margin-bottom: 0.4rem;
        flex-wrap: wrap;
    }
    .tool-name {
        font-size: 1.15rem;
        font-weight: 700;
        letter-spacing: -0.01em;
    }
    .tool-link {
        color: var(--accent);
        text-decoration: none;
        font-size: 0.85rem;
        font-weight: 600;
        white-space: nowrap;
        transition: color 0.2s;
        display: inline-flex;
        align-items: center;
        gap: 0.3rem;
    }
    .tool-link:hover { color: var(--accent-hover); }

    .tool-best-for {
        font-size: 0.9rem;
        font-weight: 600;
        color: var(--text);
        margin-bottom: 0.35rem;
    }
    .tool-best-for .label {
        font-weight: 500;
        color: var(--text-muted);
    }
    .tool-desc {
        font-size: 0.9rem;
        color: var(--text-secondary);
        line-height: 1.6;
        margin-bottom: 0.6rem;
    }
    .tool-limit {
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
        font-size: 0.8rem;
        color: #fbbf24;
        background: rgba(245,158,11,0.08);
        border: 1px solid rgba(245,158,11,0.2);
        padding: 0.25rem 0.6rem;
        border-radius: 6px;
    }
    .tool-limit i { color: #fbbf24; font-size: 0.7rem; }

    /* ===== HOW TO CHOOSE ===== */
    .choice-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        gap: 1rem;
        margin-top: 1rem;
    }
    .choice-card {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 1.5rem;
        transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
    }
    .choice-card:hover {
        border-color: rgba(129,140,248,0.3);
        box-shadow: 0 0 24px rgba(99,102,241,0.1);
        transform: translateY(-2px);
    }
    .choice-icon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.1rem;
        color: white;
        margin-bottom: 0.85rem;
    }
    .choice-icon.quick { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
    .choice-icon.pro { background: linear-gradient(135deg, #6366f1, #818cf8); }
    .choice-icon.nosignup { background: linear-gradient(135deg, #10b981, #34d399); }
    .choice-card h3 {
        font-size: 1rem;
        font-weight: 700;
        margin-bottom: 0.4rem;
        letter-spacing: -0.01em;
    }
    .choice-card p {
        font-size: 0.9rem;
        color: var(--text-secondary);
        line-height: 1.6;
    }
    .choice-card .recommendation {
        display: inline-block;
        margin-top: 0.75rem;
        font-size: 0.78rem;
        font-weight: 600;
        color: var(--accent);
        background: var(--accent-soft);
        padding: 0.2rem 0.6rem;
        border-radius: 6px;
    }

    /* ===== DISCLOSURE ===== */
    .disclosure {
        margin-top: 3rem;
        padding-top: 1.5rem;
        border-top: 1px solid var(--border);
        text-align: center;
    }
    .disclosure p {
        font-size: 0.8rem;
        color: var(--text-muted);
    }
    .disclosure a {
        color: var(--accent);
        text-decoration: none;
    }
    .disclosure a:hover { text-decoration: underline; }

    /* ===== FOOTER ===== */
    footer {
        padding: 2.5rem 2rem;
        border-top: 1px solid var(--border);
        background: rgba(255,255,255,0.02);
        margin-top: 2rem;
    }
    .footer-inner {
        max-width: 960px;
        margin: 0 auto;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 1rem;
    }
    .footer-brand {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 0.85rem;
        color: var(--text-secondary);
    }
    .footer-brand .logo-icon { width: 28px; height: 28px; font-size: 0.75rem; border-radius: 7px; }
    .footer-links { display: flex; gap: 0.25rem; }
    .footer-links a {
        color: var(--text-secondary);
        text-decoration: none;
        font-size: 0.85rem;
        padding: 0.35rem 0.7rem;
        border-radius: 6px;
        transition: color 0.2s, background 0.2s;
    }
    .footer-links a:hover { color: var(--text); background: rgba(255,255,255,0.05); }
    .footer-credit {
        font-size: 0.8rem;
        color: var(--text-muted);
        text-align: right;
    }
    .footer-credit a {
        color: var(--text-secondary);
        text-decoration: underline;
    }

    /* ===== RESPONSIVE ===== */
    @media (max-width: 640px) {
        .wrapper { padding: 0 1.25rem; }
        header { padding: 0.75rem 1.25rem; }
        .page-hero { padding: 2.5rem 0 2rem; }
        .section { padding: 2rem 0; }
        .tool-card { padding: 1.25rem; gap: 1rem; }
        .tool-header { flex-direction: column; align-items: flex-start; }
        .tool-link { white-space: normal; }
        .footer-inner { flex-direction: column; text-align: center; }
        .footer-credit { text-align: center; }
    }

    /* ===== SMOOTH SCROLL ===== */
    html { scroll-behavior: smooth; }

    /* ===== FOCUS ===== */
    a:focus-visible, button:focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 2px;
        border-radius: 6px;
    }

    /* Light/dark not needed — dark cinematic theme like the rest of the site */
    /* JS particle spawn + theme icon only */

    /* ===== SCROLL REVEAL ===== */
    .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
    .reveal.visible { opacity: 1; transform: none; }
    

/* === Shared guide extras === */
.callout {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    background: color-mix(in srgb, var(--accent) 8%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    margin: 1.5rem 0;
}
.callout i { color: var(--accent); margin-top: 0.2rem; }
.callout p { margin: 0; font-size: 0.95rem; }

.tool-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1rem 0 0; }
.tool-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--card-bg, rgba(255,255,255,0.03));
    color: inherit;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: border-color 0.2s ease, transform 0.2s ease;
}
.tool-chip:hover { border-color: var(--accent); transform: translateY(-1px); }
.tool-chip i { color: var(--accent); }

.related-guides {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
    margin-top: 1.25rem;
}
.related-guides a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    border: 1px solid var(--border);
    border-radius: 12px;
    text-decoration: none;
    color: inherit;
    font-weight: 500;
    font-size: 0.95rem;
    transition: border-color 0.2s ease, transform 0.2s ease;
}
.related-guides a:hover { border-color: var(--accent); transform: translateY(-2px); }
.related-guides a i { color: var(--accent); }

pre.gcode {
    background: rgba(0,0,0,0.25);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1rem 1.25rem;
    overflow-x: auto;
    font-size: 0.85rem;
    line-height: 1.6;
}
pre.gcode code { font-family: 'Courier New', monospace; white-space: pre; }

table.gtable {
    width: 100%;
    border-collapse: collapse;
    margin: 1.25rem 0;
    font-size: 0.92rem;
}
table.gtable th, table.gtable td {
    text-align: left;
    padding: 0.65rem 0.9rem;
    border-bottom: 1px solid var(--border);
}
table.gtable th { font-weight: 600; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.04em; opacity: 0.75; }

@media (max-width: 768px) {
    table.gtable { display: block; overflow-x: auto; }
}

/* === Shared additions (guide #1 uses inline equivalents) === */
.footer-bottom {
    max-width: 960px;
    margin: 1rem auto 0;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
}
details.gfaq {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.9rem 1.2rem;
    margin-bottom: 0.75rem;
    background: var(--bg-card);
}
details.gfaq summary {
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text);
}
details.gfaq p { margin: 0.75rem 0 0; color: var(--text-secondary); font-size: 0.92rem; }

/* === Mobile nav: collapse to hamburger like the main site === */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 38px;
    height: 38px;
    padding: 8px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
}
.mobile-menu-toggle .hamburger-line {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}
@media (max-width: 768px) {
    .mobile-menu-toggle { display: flex; }
    .header-inner nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        background: rgba(3,3,3,0.97);
        border-bottom: 1px solid var(--border);
        padding: 0.75rem 1.25rem 1rem;
        gap: 0.25rem;
    }
    .header-inner nav.open { display: flex; }
    .mobile-menu-toggle.open .hamburger-line:nth-child(1) { transform: translateY(6px) rotate(45deg); }
    .mobile-menu-toggle.open .hamburger-line:nth-child(2) { opacity: 0; }
    .mobile-menu-toggle.open .hamburger-line:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
}


    /* === Light theme (unified) === */
    html.light {
        --bg: #fafafa;
        --bg-card: rgba(0, 0, 0, 0.025);
        --bg-soft: rgba(0, 0, 0, 0.05);
        --border: rgba(0, 0, 0, 0.10);
        --border-hover: rgba(0, 0, 0, 0.18);
        --text: #09090b;
        --text-secondary: #52525b;
        --text-muted: #71717a;
        --accent-soft: rgba(99, 102, 241, 0.10);
        --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
        --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
        --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
    }
    html.light body { background: #fafafa; color: #09090b; }