:root {
    --primary-color: #6366F1;
    --primary-hover-color: #4F46E5;
    --primary-light: rgba(99, 102, 241, 0.1);
    --accent-color: #EC4899;
    --dark-bg: #0A0A0F;
    --darker-bg: #050508;
    --card-bg: rgba(255, 255, 255, 0.03);
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --border-color: rgba(255, 255, 255, 0.08);
    --gradient-text: linear-gradient(135deg, #6366F1 0%, #A855F7 50%, #EC4899 100%);
    --header-height: 48px;
}

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

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--dark-bg);
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 20% 15%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 85%, rgba(236, 72, 153, 0.06) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.page-main {
    position: relative;
    z-index: 1;
    padding: calc(var(--header-height) + 40px) 24px 80px;
    max-width: 960px;
    margin: 0 auto;
}

.page-hero {
    text-align: center;
    margin-bottom: 48px;
}

.page-hero h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-hero .lead {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto 24px;
}

.cta-row {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 20px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
    color: #fff;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-primary:hover { opacity: 0.9; }

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: transparent;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid var(--border-color);
    transition: border-color 0.2s, color 0.2s;
}

.btn-secondary:hover {
    border-color: rgba(99, 102, 241, 0.5);
    color: var(--text-primary);
}

.content-section {
    margin-bottom: 48px;
}

.content-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.content-section h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 24px 0 10px;
    color: var(--primary-color);
}

.content-section p {
    color: var(--text-secondary);
    margin-bottom: 14px;
}

.content-section ul,
.content-section ol {
    color: var(--text-secondary);
    margin: 0 0 16px 20px;
}

.content-section li { margin-bottom: 8px; }

.content-section a:not(.btn-primary):not(.btn-secondary) {
    color: var(--primary-color);
    text-decoration: none;
}

.content-section a.btn-primary {
    color: #fff;
}

.content-section a.btn-secondary {
    color: var(--text-secondary);
}

.content-section a.btn-secondary:hover {
    color: var(--text-primary);
}

.content-section a:hover { text-decoration: underline; }

.card-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-top: 24px;
}

.info-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 18px 14px;
}

.info-card .card-icon {
    font-size: 1.4rem;
    margin-bottom: 8px;
}

.info-card h3 {
    font-size: 0.95rem;
    font-weight: 700;
    margin: 0 0 8px;
    color: var(--text-primary);
}

.info-card p {
    font-size: 0.84rem;
    line-height: 1.55;
    margin: 0;
    color: var(--text-secondary);
}

.info-card .model-icon-strip {
    gap: 6px;
    margin-top: 10px;
}

.info-card .model-icon-chip {
    padding: 5px 8px;
    font-size: 0.72rem;
    gap: 5px;
}

.info-card .model-icon-chip img {
    width: 14px;
    height: 14px;
}

.use-case-block {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px;
    margin-bottom: 24px;
}

.use-case-block h3 {
    margin-top: 0;
}

.audience-line {
    color: var(--text-secondary);
    font-size: 0.92rem;
    margin: 8px 0 14px;
}

.audience-line strong {
    color: var(--text-primary);
}

.before-after {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 16px 0;
}

.before-after > div {
    padding: 16px;
    border-radius: 10px;
    font-size: 0.9rem;
}

.before-after .before {
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--text-secondary);
}

.before-after .after {
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: var(--text-secondary);
}

.before-after strong {
    display: block;
    margin-bottom: 6px;
    color: var(--text-primary);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.prompt-examples {
    list-style: none;
    margin: 12px 0 0;
    padding: 0;
}

.prompt-examples li {
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 8px;
    padding: 10px 14px;
    margin-bottom: 8px;
    font-size: 0.88rem;
    line-height: 1.55;
    color: var(--text-secondary);
}

.step-list {
    counter-reset: step;
    list-style: none;
    margin: 0;
    padding: 0;
}

.step-list li {
    counter-increment: step;
    position: relative;
    padding: 20px 20px 20px 56px;
    margin-bottom: 12px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
}

.step-list li::before {
    content: counter(step);
    position: absolute;
    left: 16px;
    top: 18px;
    width: 28px;
    height: 28px;
    background: var(--primary-light);
    border: 1px solid rgba(99, 102, 241, 0.4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--primary-color);
}

.step-list strong { color: var(--text-primary); }

/* Inline icon inside a step (e.g. puzzle piece) */
.step-inline-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    vertical-align: -5px;
    margin: 0 2px;
    padding: 3px;
    background: var(--primary-light);
    border: 1px solid rgba(99, 102, 241, 0.4);
    border-radius: 6px;
}

.step-inline-icon img { width: 100%; height: 100%; display: block; }

/* Logo tile grid — AI services and compatible browsers */
.logo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 14px;
    margin: 8px 0 4px;
}

.logo-tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 20px 12px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    text-align: center;
    transition: border-color 0.2s, transform 0.2s, background 0.2s;
}

.logo-tile:hover {
    border-color: rgba(99, 102, 241, 0.45);
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.05);
}

.logo-tile-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
}

.logo-tile-badge img { width: 28px; height: 28px; display: block; }

.logo-tile-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.model-icon-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 14px 0 0;
}

.page-hero .model-icon-strip {
    justify-content: center;
    margin-bottom: 24px;
}

.model-icon-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 600;
}

.model-icon-chip img {
    width: 18px;
    height: 18px;
    display: block;
}

.disclaimer {
    font-size: 0.85rem;
    color: var(--text-muted);
    border-left: 3px solid rgba(236, 72, 153, 0.5);
    padding: 12px 16px;
    margin: 16px 0;
    background: rgba(236, 72, 153, 0.05);
    border-radius: 0 8px 8px 0;
}

.internal-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.internal-links a {
    padding: 8px 14px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: border-color 0.2s, color 0.2s;
}

.internal-links a:hover {
    border-color: rgba(99, 102, 241, 0.4);
    color: var(--text-primary);
}

.page-footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 32px 24px 48px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.page-footer nav {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    margin-bottom: 16px;
}

.page-footer a {
    color: var(--text-secondary);
    text-decoration: none;
}

.page-footer a:hover { color: var(--text-primary); }

.ai-pill-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin: 20px 0;
}

.ai-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.ai-pill img {
    width: 18px;
    height: 18px;
    display: block;
}

@media (max-width: 900px) {
    .card-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .before-after { grid-template-columns: 1fr; }
    .page-main { padding-left: 16px; padding-right: 16px; }
    .card-grid {
        grid-template-columns: 1fr;
    }
}