:root {
    --cortex-bg: #f8fafc;
    --cortex-surface: #ffffff;
    --cortex-surface-2: #f1f5f9;
    --cortex-text: #0f172a;
    --cortex-muted: #64748b;
    --cortex-border: #e2e8f0;
    --cortex-primary: #2563eb;
    --cortex-primary-strong: #1d4ed8;
    --cortex-accent: #16a34a;
    --cortex-warning: #f59e0b;
    --cortex-shadow: 0 20px 50px rgba(37, 99, 235, 0.10);
}

html {
    scroll-behavior: smooth;
}

body.cortex-body {
    margin: 0;
    color: var(--cortex-text);
    font-feature-settings: "ss01", "cv01";
    -webkit-font-smoothing: antialiased;
    background:
        radial-gradient(circle at 15% -5%, rgba(37, 99, 235, 0.08), transparent 32%),
        radial-gradient(circle at 90% 0%, rgba(22, 163, 74, 0.06), transparent 24%),
        linear-gradient(180deg, #ffffff 0%, var(--cortex-bg) 100%);
}

a {
    color: inherit;
    text-decoration: none;
}

::selection {
    background: rgba(37, 99, 235, 0.16);
    color: var(--cortex-text);
}

:focus-visible {
    outline: 2px solid var(--cortex-primary);
    outline-offset: 3px;
    border-radius: 6px;
}

/* ---------- Header ---------- */

.cortex-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0.85rem 0;
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(22px) saturate(1.6);
    -webkit-backdrop-filter: blur(22px) saturate(1.6);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

.cortex-header.scrolled {
    background: rgba(255, 255, 255, 0.88);
    border-bottom-color: rgba(226, 232, 240, 0.9);
    box-shadow: 0 12px 32px -18px rgba(15, 23, 42, 0.18);
}

.cortex-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
}

.cortex-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    flex-shrink: 0;
}

.cortex-logo-img {
    display: block;
    height: 3rem;
    width: auto;
    mix-blend-mode: multiply;
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.3s ease;
}

.cortex-logo-mark-img {
    display: none;
    height: 2.6rem;
    width: auto;
    mix-blend-mode: multiply;
}

.cortex-brand:hover .cortex-logo-img {
    transform: translateY(-1px) scale(1.02);
    filter: brightness(1.05);
}

.cortex-brand-footer .cortex-logo-img {
    height: 2.6rem;
}

.cortex-nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.cortex-nav-links a {
    position: relative;
    padding: 0.5rem 0.85rem;
    border-radius: 999px;
    color: #475569;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: -0.005em;
    transition: color 0.2s ease, background 0.2s ease;
}

.cortex-nav-links a:hover {
    color: var(--cortex-text);
    background: rgba(15, 23, 42, 0.05);
}

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

.cortex-nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.cortex-link-button,
.cortex-primary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.72rem 1.25rem;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: -0.005em;
    transition: transform 0.2s ease, box-shadow 0.25s ease, border-color 0.2s ease, background 0.2s ease;
}

.cortex-link-button {
    border: 1px solid var(--cortex-border);
    background: rgba(255, 255, 255, 0.85);
}

.cortex-link-button:hover {
    border-color: #cbd5e1;
    background: #fff;
    box-shadow: 0 6px 18px -8px rgba(15, 23, 42, 0.18);
}

.cortex-primary-button {
    color: #fff;
    background: linear-gradient(180deg, #3b82f6 0%, var(--cortex-primary) 45%, var(--cortex-primary-strong) 100%);
    box-shadow:
        0 12px 26px -10px rgba(37, 99, 235, 0.65),
        inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.cortex-primary-button:hover {
    box-shadow:
        0 16px 32px -10px rgba(37, 99, 235, 0.7),
        inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.cortex-link-button:hover,
.cortex-primary-button:hover {
    transform: translateY(-1px);
}

.cortex-link-button:active,
.cortex-primary-button:active {
    transform: translateY(0) scale(0.98);
}

/* ---------- Hamburger ---------- */

.cortex-menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    padding: 0;
    border: 1px solid rgba(37, 99, 235, 0.25);
    border-radius: 999px;
    background: linear-gradient(180deg, #ffffff, #f3f6fd);
    box-shadow:
        0 8px 20px -8px rgba(37, 99, 235, 0.35),
        inset 0 1px 0 #fff;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.25s ease, border-color 0.2s ease;
    flex-shrink: 0;
}

.cortex-menu-toggle:hover {
    border-color: rgba(37, 99, 235, 0.5);
    transform: translateY(-1px);
}

.cortex-menu-toggle:active {
    transform: scale(0.94);
}

.cortex-menu-bars {
    position: relative;
    display: block;
    width: 18px;
    height: 14px;
}

.cortex-menu-bars i {
    position: absolute;
    left: 0;
    display: block;
    width: 100%;
    height: 2.5px;
    border-radius: 999px;
    background: var(--cortex-primary);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s ease, top 0.3s cubic-bezier(0.4, 0, 0.2, 1), width 0.3s ease;
}

.cortex-menu-bars i:nth-child(1) { top: 0; }
.cortex-menu-bars i:nth-child(2) { top: 5.75px; width: 72%; }
.cortex-menu-bars i:nth-child(3) { top: 11.5px; }

.cortex-menu-toggle:hover .cortex-menu-bars i:nth-child(2) {
    width: 100%;
}

.cortex-header.menu-open .cortex-menu-bars i:nth-child(1) {
    top: 5.75px;
    transform: rotate(45deg);
}

.cortex-header.menu-open .cortex-menu-bars i:nth-child(2) {
    opacity: 0;
    transform: translateX(-6px);
}

.cortex-header.menu-open .cortex-menu-bars i:nth-child(3) {
    top: 5.75px;
    transform: rotate(-45deg);
}

/* ---------- Mobile nav ---------- */

.cortex-mobile-nav {
    display: none;
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transform: translateY(-8px);
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease, transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.cortex-header.menu-open .cortex-mobile-nav {
    max-height: 560px;
    opacity: 1;
    transform: translateY(0);
}

.cortex-mobile-nav-inner {
    display: grid;
    gap: 0.25rem;
    margin-top: 0.9rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid var(--cortex-border);
    border-radius: 1.4rem;
    box-shadow: 0 24px 48px -20px rgba(15, 23, 42, 0.25);
}

.cortex-mobile-nav-inner > a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1rem;
    border-radius: 0.9rem;
    font-weight: 650;
    color: var(--cortex-text);
    transition: background 0.2s ease, padding-left 0.2s ease;
}

.cortex-mobile-nav-inner > a em {
    font-style: normal;
    color: #cbd5e1;
    transition: color 0.2s ease, transform 0.2s ease;
}

.cortex-mobile-nav-inner > a:hover,
.cortex-mobile-nav-inner > a:active {
    background: rgba(37, 99, 235, 0.06);
    padding-left: 1.2rem;
}

.cortex-mobile-nav-inner > a:hover em {
    color: var(--cortex-primary);
    transform: translateX(3px);
}

.cortex-mobile-nav-cta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem;
    margin-top: 0.5rem;
    padding: 0.75rem 0.5rem 0.35rem;
    border-top: 1px solid var(--cortex-border);
}

@media (max-width: 991.98px) {
    .cortex-nav-links,
    .cortex-nav-actions {
        display: none;
    }

    .cortex-menu-toggle {
        display: inline-flex;
    }

    .cortex-mobile-nav {
        display: block;
    }
}

@media (max-width: 479.98px) {
    .cortex-logo-img {
        display: none;
    }

    .cortex-header .cortex-logo-mark-img {
        display: block;
    }
}

.cortex-main section {
    position: relative;
}

/* ---------- Scroll reveal ---------- */

.cx-reveal {
    opacity: 0;
    transform: translateY(28px);
    transition:
        opacity 0.75s cubic-bezier(0.22, 1, 0.36, 1),
        transform 0.75s cubic-bezier(0.22, 1, 0.36, 1);
    transition-delay: var(--cx-delay, 0s);
}

.cx-reveal.cx-in {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    .cx-reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}

.cortex-section {
    padding: 4rem 0;
}

.cortex-hero {
    padding: 4.5rem 0 3rem;
}

.cortex-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 0.95rem;
    border-radius: 999px;
    border: 1px solid rgba(37, 99, 235, 0.18);
    color: var(--cortex-primary-strong);
    background: rgba(37, 99, 235, 0.07);
    font-size: 0.92rem;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.cortex-hero h1,
.cortex-page-hero h1 {
    font-size: clamp(2.4rem, 5vw, 4.8rem);
    line-height: 1.02;
    font-weight: 800;
    letter-spacing: -0.04em;
    margin: 1.3rem 0 1rem;
}

.cortex-hero p,
.cortex-page-hero p,
.cortex-lead {
    max-width: 760px;
    font-size: 1.12rem;
    line-height: 1.7;
    color: var(--cortex-muted);
}

.cortex-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

.cortex-hero-grid,
.cortex-grid-2,
.cortex-grid-3,
.cortex-grid-4 {
    display: grid;
    gap: 1.5rem;
}

.cortex-hero-grid,
.cortex-grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.cortex-grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cortex-grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.cortex-card,
.cortex-metric,
.cortex-timeline-item,
.cortex-pricing-card,
.cortex-panel {
    padding: 1.6rem;
    border-radius: 1.5rem;
    border: 1px solid var(--cortex-border);
    background: rgba(255, 255, 255, 0.88);
    box-shadow: var(--cortex-shadow);
}

.cortex-card h3,
.cortex-pricing-card h3,
.cortex-section-title {
    margin: 0 0 0.7rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.cortex-card p,
.cortex-panel p,
.cortex-pricing-card p,
.cortex-timeline-item p {
    margin: 0;
    color: var(--cortex-muted);
    line-height: 1.65;
}

.cortex-section-title-wrap {
    max-width: 760px;
    margin-bottom: 2rem;
}

.cortex-stat {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--cortex-primary-strong);
    line-height: 1;
}

.cortex-list {
    display: grid;
    gap: 0.9rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.cortex-list li {
    position: relative;
    padding-left: 1.5rem;
    color: var(--cortex-muted);
}

.cortex-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.55rem;
    width: 0.55rem;
    height: 0.55rem;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--cortex-primary), var(--cortex-accent));
}

.cortex-highlight {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(22, 163, 74, 0.08));
}

.cortex-badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    margin-top: 1.5rem;
}

.cortex-badge {
    padding: 0.7rem 1rem;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--cortex-border);
    color: var(--cortex-text);
    font-size: 0.92rem;
    font-weight: 700;
}

.cortex-page-hero {
    padding: 3.4rem 0 2rem;
}

.cortex-pricing-card.featured {
    border-color: rgba(37, 99, 235, 0.35);
    background: linear-gradient(180deg, rgba(37, 99, 235, 0.06), rgba(255, 255, 255, 0.95));
}

.cortex-price {
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
    margin: 1.2rem 0;
}

.cortex-price strong {
    font-size: 2.1rem;
    font-weight: 800;
}

.cortex-price span {
    color: var(--cortex-muted);
    font-weight: 600;
}

.cortex-cta {
    padding: 3rem;
    border-radius: 2rem;
    color: #fff;
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 55%, #1d4ed8 100%);
    box-shadow: var(--cortex-shadow);
}

.cortex-cta p,
.cortex-cta h2,
.cortex-cta h3 {
    color: #fff;
}

.cortex-footer {
    margin-top: 3rem;
    padding: 3rem 0 2rem;
    border-top: 1px solid var(--cortex-border);
    background: rgba(255, 255, 255, 0.7);
}

.cortex-footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: 2rem;
}

.cortex-footer-grid h3 {
    margin: 0 0 1rem;
    font-size: 1rem;
    font-weight: 800;
}

.cortex-footer-grid ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 0.75rem;
    color: var(--cortex-muted);
}

.cortex-footer-text,
.cortex-footer-bottom {
    color: var(--cortex-muted);
}

.cortex-footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--cortex-border);
    font-size: 0.92rem;
}

.cortex-footer-legal {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

@media (max-width: 991.98px) {
    .cortex-hero-grid,
    .cortex-grid-2,
    .cortex-grid-3,
    .cortex-grid-4,
    .cortex-footer-grid {
        grid-template-columns: 1fr;
    }

    .cortex-cta {
        padding: 2rem;
    }

    .cortex-footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}