:root {
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-ink: #0f172a;
    --color-ink-soft: #475569;
    --color-accent: #1d4ed8;
    --color-accent-dark: #1e3a8a;
    --color-border: #e2e8f0;
    --radius: 10px;
    --max-width: 1100px;
    --font-body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html {
    font-family: var(--font-body);
    color: var(--color-ink);
    background: var(--color-bg);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

body { margin: 0; }

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.2; margin: 0; color: var(--color-ink); }
h1 { font-size: 2.75rem; font-weight: 700; }
h2 { font-size: 2rem; font-weight: 700; margin-bottom: 1rem; }
h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 0.5rem; }
p { color: var(--color-ink-soft); margin: 0.75rem 0; }

/* Header / Nav */
.site-header {
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
    position: sticky;
    top: 0;
    z-index: 10;
}
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    padding-bottom: 1rem;
}
.brand {
    color: var(--color-ink);
    font-weight: 700;
    font-size: 1.25rem;
    display: inline-flex;
    gap: 0.4rem;
    align-items: center;
}
.brand-mark { height: 28px; width: 28px; border-radius: 6px; display: block; }
.nav-links {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    align-items: center;
    margin: 0;
    padding: 0;
}
.nav-links a { color: var(--color-ink-soft); }
.nav-links a:hover { color: var(--color-ink); text-decoration: none; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.7rem 1.25rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-dark); text-decoration: none; }
.btn-outline { border-color: var(--color-border); color: var(--color-ink); }
.btn-outline:hover { border-color: var(--color-ink); text-decoration: none; }
.btn-ghost { color: var(--color-ink); }
.btn-ghost:hover { background: var(--color-bg-alt); text-decoration: none; }

/* Hero */
.hero { padding: 5rem 0 4rem; }
.hero h1 { max-width: 800px; }
.hero .lead {
    font-size: 1.2rem;
    max-width: 700px;
    margin-top: 1.5rem;
}
.cta-row {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

/* Sections */
.section { padding: 4rem 0; }
.section-alt { background: var(--color-bg-alt); }
.section-lead { max-width: 700px; font-size: 1.05rem; margin-bottom: 2rem; }

/* Grids */
.grid { display: grid; gap: 1.5rem; margin-top: 2rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 800px) {
    .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

/* Cards and features */
.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
}
.feature { padding: 0.5rem 0; }

/* CTA section */
.cta-section {
    background: var(--color-ink);
    text-align: center;
}
.cta-section h2 { color: #fff; }
.cta-section p { color: #cbd5e1; max-width: 600px; margin: 1rem auto 2rem; }

/* Footer */
.site-footer {
    border-top: 1px solid var(--color-border);
    padding: 2rem 0;
    margin-top: 2rem;
}
.site-footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}
.site-footer p { margin: 0; font-size: 0.9rem; color: var(--color-ink-soft); }
.footer-nav { display: flex; gap: 1.5rem; }
.footer-nav a { color: var(--color-ink-soft); font-size: 0.9rem; }

/* Pricing page */
.pricing-page { padding: 4rem 0 5rem; }
.pricing-intro { text-align: center; max-width: 640px; margin: 0 auto 3rem; }
.pricing-intro h1 { font-size: 2.5rem; }
.pricing-intro .lead { font-size: 1.1rem; margin-top: 1rem; }
.early-access-tag {
    display: inline-block;
    background: var(--color-bg-alt);
    color: var(--color-accent);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    padding: 0.25rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 1.25rem;
}
.pricing-card {
    max-width: 520px;
    margin: 0 auto;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}
.pricing-card h2 { font-size: 1.5rem; margin-bottom: 1rem; }
.pricing-card .price { margin: 0.5rem 0 0.25rem; }
.price-amount { font-size: 2.75rem; font-weight: 700; color: var(--color-ink); }
.price-unit { color: var(--color-ink-soft); margin-left: 0.25rem; }
.price-meta { font-size: 0.95rem; color: var(--color-ink-soft); margin-bottom: 1.5rem; }
.pricing-features {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0 2rem;
    text-align: left;
    color: var(--color-ink-soft);
}
.pricing-features li {
    padding: 0.4rem 0 0.4rem 1.5rem;
    position: relative;
}
.pricing-features li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
}
.pricing-card .btn-primary { width: 100%; padding: 0.85rem 1.25rem; }
.pricing-secondary { margin-top: 1.25rem; font-size: 0.95rem; }
.pricing-note {
    max-width: 640px;
    margin: 3rem auto 0;
    text-align: center;
}
.pricing-note h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }

/* Legal pages */
.legal-page { padding: 3rem 0 4rem; }
.legal { max-width: 760px; }
.legal h1 { font-size: 2.25rem; margin-bottom: 0.5rem; }
.legal h2 { font-size: 1.4rem; margin: 2rem 0 0.75rem; }
.legal h3 { font-size: 1.05rem; margin: 1.25rem 0 0.5rem; }
.legal p, .legal li { color: var(--color-ink-soft); }
.legal ul, .legal ol { color: var(--color-ink-soft); padding-left: 1.25rem; }
.legal li { margin: 0.35rem 0; }
.legal-meta { font-size: 0.9rem; color: var(--color-ink-soft); margin-bottom: 2rem; }

/* Responsive */
@media (max-width: 640px) {
    .nav-links { gap: 1rem; font-size: 0.9rem; }
    .nav-links li:nth-child(-n+3) { display: none; }
    .hero { padding: 3rem 0 2rem; }
    .hero h1 { font-size: 2rem; }
    .hero .lead { font-size: 1.05rem; }
    .section { padding: 2.5rem 0; }
    h2 { font-size: 1.6rem; }
}

/* Active nav link */
.nav-links a.nav-active {
    color: var(--color-ink);
    font-weight: 600;
}

/* ========== Demo Hub ========== */

.demo-hero {
    padding-bottom: 2rem;
}

.demo-hub {
    display: grid;
    gap: 1.5rem;
    max-width: 800px;
    margin: 0 auto;
}

.demo-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.demo-card-body h3 {
    font-size: 1.25rem;
    margin-bottom: 0.35rem;
}

.demo-audience {
    font-size: 0.95rem;
    margin: 0 0 1rem;
}

.demo-features {
    list-style: none;
    padding: 0;
    margin: 0;
    color: var(--color-ink-soft);
}

.demo-features li {
    padding: 0.35rem 0 0.35rem 1.25rem;
    position: relative;
}

.demo-features li::before {
    content: "\2022";
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.demo-card-cta {
    border-top: 1px solid var(--color-border);
    padding-top: 1.25rem;
}

.demo-note {
    font-size: 0.85rem;
    margin: 0.5rem 0 0;
}

@media (max-width: 640px) {
    .demo-card {
        padding: 1.25rem;
    }
    .demo-hub {
        gap: 1.25rem;
    }
}

/* ========== Docs ========== */

.docs-page { padding: 2.5rem 0 5rem; }

.docs-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 3rem;
    align-items: start;
}

.docs-sidebar {
    position: sticky;
    top: 5rem;
}

.docs-nav-heading {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-ink-soft);
    margin: 0 0 0.75rem;
}

.docs-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.docs-nav li + li { margin-top: 0.25rem; }

.docs-nav a {
    display: block;
    padding: 0.35rem 0.6rem;
    border-radius: 6px;
    color: var(--color-ink-soft);
    font-size: 0.95rem;
}

.docs-nav a:hover {
    background: var(--color-bg-alt);
    color: var(--color-ink);
    text-decoration: none;
}

.docs-nav-active {
    background: var(--color-bg-alt);
    color: var(--color-ink) !important;
    font-weight: 600;
}

.docs-content { max-width: 760px; }

.docs-content h1 {
    font-size: 2.25rem;
    margin-bottom: 0.5rem;
}

.docs-subhead {
    font-size: 1.1rem;
    color: var(--color-ink-soft);
    margin-bottom: 2rem;
}

.docs-content h2 {
    font-size: 1.4rem;
    margin-top: 2.5rem;
    margin-bottom: 0.75rem;
}

.docs-content h3 {
    font-size: 1.05rem;
    margin-top: 1.5rem;
}

.docs-content p, .docs-content li {
    color: var(--color-ink-soft);
}

.docs-content ul, .docs-content ol {
    padding-left: 1.25rem;
    color: var(--color-ink-soft);
}

.docs-content li { margin: 0.35rem 0; }

.docs-content pre {
    background: #f1f5f9;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    overflow-x: auto;
    font-size: 0.9rem;
    line-height: 1.5;
}

.docs-content code {
    background: #f1f5f9;
    padding: 0.15rem 0.35rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

.docs-content pre code {
    background: transparent;
    padding: 0;
}

.docs-content kbd {
    background: #e2e8f0;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    padding: 0.1rem 0.35rem;
    font-size: 0.85rem;
    font-family: inherit;
}

.docs-faq dt {
    font-weight: 600;
    margin-top: 1rem;
    color: var(--color-ink);
}

.docs-faq dd {
    margin: 0.35rem 0 0;
    color: var(--color-ink-soft);
}

.docs-landing { padding: 3rem 0 5rem; }

.docs-card {
    display: block;
    transition: box-shadow 0.15s, transform 0.15s;
}

.docs-card:hover {
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
    transform: translateY(-2px);
}

@media (max-width: 800px) {
    .docs-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .docs-sidebar {
        position: static;
        border-bottom: 1px solid var(--color-border);
        padding-bottom: 1rem;
    }
    .docs-nav ul {
        display: flex;
        gap: 0.5rem;
        flex-wrap: wrap;
    }
}

/* ========== Docs ========== */

.docs-page { padding: 2.5rem 0 5rem; }

.docs-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 3rem;
    align-items: start;
}

.docs-sidebar {
    position: sticky;
    top: 5rem;
}

.docs-nav-heading {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-ink-soft);
    margin: 0 0 0.75rem;
}

.docs-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.docs-nav li + li { margin-top: 0.25rem; }

.docs-nav a {
    display: block;
    padding: 0.35rem 0.6rem;
    border-radius: 6px;
    color: var(--color-ink-soft);
    font-size: 0.95rem;
}

.docs-nav a:hover {
    background: var(--color-bg-alt);
    color: var(--color-ink);
    text-decoration: none;
}

.docs-nav-active {
    background: var(--color-bg-alt);
    color: var(--color-ink) !important;
    font-weight: 600;
}

.docs-content { max-width: 760px; }

.docs-content h1 {
    font-size: 2.25rem;
    margin-bottom: 0.5rem;
}

.docs-subhead {
    font-size: 1.1rem;
    color: var(--color-ink-soft);
    margin-bottom: 2rem;
}

.docs-content h2 {
    font-size: 1.4rem;
    margin-top: 2.5rem;
    margin-bottom: 0.75rem;
}

.docs-content h3 {
    font-size: 1.05rem;
    margin-top: 1.5rem;
}

.docs-content p, .docs-content li {
    color: var(--color-ink-soft);
}

.docs-content ul, .docs-content ol {
    padding-left: 1.25rem;
    color: var(--color-ink-soft);
}

.docs-content li { margin: 0.35rem 0; }

.docs-content pre {
    background: #f1f5f9;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    overflow-x: auto;
    font-size: 0.9rem;
    line-height: 1.5;
}

.docs-content code {
    background: #f1f5f9;
    padding: 0.15rem 0.35rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

.docs-content pre code {
    background: transparent;
    padding: 0;
}

.docs-content kbd {
    background: #e2e8f0;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    padding: 0.1rem 0.35rem;
    font-size: 0.85rem;
    font-family: inherit;
}

.docs-faq dt {
    font-weight: 600;
    margin-top: 1rem;
    color: var(--color-ink);
}

.docs-faq dd {
    margin: 0.35rem 0 0;
    color: var(--color-ink-soft);
}

.docs-landing { padding: 3rem 0 5rem; }

.docs-card {
    display: block;
    transition: box-shadow 0.15s, transform 0.15s;
}

.docs-card:hover {
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
    transform: translateY(-2px);
}

@media (max-width: 800px) {
    .docs-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .docs-sidebar {
        position: static;
        border-bottom: 1px solid var(--color-border);
        padding-bottom: 1rem;
    }
    .docs-nav ul {
        display: flex;
        gap: 0.5rem;
        flex-wrap: wrap;
    }
}