/* ============================================================
   Ergonosis — Single-page site styles
   ============================================================ */

:root {
    /* Brand palette */
    --c-bg-dark: #07111F;
    --c-bg-dark-2: #0B0F17;
    --c-blue: #2563FF;
    --c-blue-light: #38BDF8;
    --c-bg-light: #F8FAFC;
    --c-border: #E5E7EB;
    --c-text-muted: #64748B;
    --c-text-dark: #1E293B;
    --c-white: #FFFFFF;

    /* Fonts */
    --f-heading: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
    --f-body: 'DM Sans', 'Helvetica Neue', Arial, sans-serif;
    --f-mono: 'IBM Plex Mono', 'SFMono-Regular', Menlo, Consolas, monospace;

    /* Layout */
    --container: 1200px;
    --container-narrow: 820px;
    --radius: 14px;

    /* Motion */
    --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
    --transition: 200ms var(--ease);
}

/* ----------------------------------------------------------
   Reset / base
   ---------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    font-family: var(--f-body);
    font-size: 17px;
    line-height: 1.65;
    color: var(--c-text-dark);
    background: var(--c-bg-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
img, svg { display: block; max-width: 100%; }
a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition);
}
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; cursor: pointer; }

/* ----------------------------------------------------------
   Layout
   ---------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 28px;
}
.narrow { max-width: var(--container-narrow); }

.section {
    position: relative;
    padding: 112px 0;
}
.section-light {
    background: var(--c-bg-light);
    color: var(--c-text-dark);
}
.section-bordered {
    border-top: 1px solid var(--c-border);
}
.section-dark {
    background: var(--c-bg-dark);
    color: var(--c-white);
    overflow: hidden;
    isolation: isolate;
}
.section-dark .dark-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(60% 80% at 20% 0%, rgba(37, 99, 255, 0.18), transparent 60%),
        radial-gradient(40% 60% at 100% 100%, rgba(56, 189, 248, 0.10), transparent 60%),
        linear-gradient(180deg, var(--c-bg-dark) 0%, var(--c-bg-dark-2) 100%);
    z-index: -1;
}

/* ----------------------------------------------------------
   Typography
   ---------------------------------------------------------- */
.eyebrow {
    font-family: var(--f-mono);
    font-size: 12px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--c-text-muted);
    margin: 0 0 20px;
    text-align: center;
}
.eyebrow-light { color: rgba(248, 250, 252, 0.6); }

.section-title {
    font-family: var(--f-heading);
    font-weight: 600;
    font-size: clamp(32px, 4vw, 46px);
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin: 0 auto 28px;
    color: var(--c-text-dark);
    max-width: 760px;
    text-align: center;
}
.section-title.light { color: var(--c-white); }

.prose p {
    font-size: 17.5px;
    line-height: 1.72;
    color: var(--c-text-dark);
    margin: 0 auto 18px;
    max-width: 68ch;
}
.prose p:last-child { margin-bottom: 0; }
.prose-wide p { max-width: 75ch; }
.prose-light p { color: rgba(248, 250, 252, 0.78); }

.lead {
    font-size: 19px;
    line-height: 1.7;
    color: var(--c-text-muted);
    max-width: 64ch;
    margin: 0 auto;
    text-align: center;
}

.accent { color: var(--c-blue-light); }

/* ----------------------------------------------------------
   Header
   ---------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(7, 17, 31, 0.85);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: background var(--transition), border-color var(--transition);
}
.site-header.is-scrolled {
    background: rgba(7, 17, 31, 0.96);
    border-bottom-color: rgba(255, 255, 255, 0.08);
}
.site-header .container { max-width: none; }
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.wordmark {
    font-family: var(--f-heading);
    font-weight: 600;
    font-size: 20px;
    letter-spacing: -0.01em;
    color: var(--c-white);
}
.wordmark:hover { color: var(--c-blue-light); }

.site-nav ul {
    display: flex;
    gap: 24px;
    align-items: center;
}
.site-nav a {
    font-size: 14px;
    font-weight: 500;
    color: rgba(248, 250, 252, 0.78);
    position: relative;
    padding: 6px 0;
}
.site-nav a::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 1px;
    background: var(--c-blue-light);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform var(--transition);
}
.site-nav a:hover { color: var(--c-white); }
.site-nav a:hover::after { transform: scaleX(1); }

.nav-toggle {
    display: none;
    background: transparent;
    border: 0;
    padding: 8px;
    width: 40px;
    height: 40px;
    position: relative;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--c-white);
    margin: 5px auto;
    transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ----------------------------------------------------------
   Hero
   ---------------------------------------------------------- */
.hero {
    position: relative;
    background:
        linear-gradient(180deg, var(--c-bg-dark) 0%, var(--c-bg-dark-2) 100%);
    color: var(--c-white);
    overflow: hidden;
    isolation: isolate;
    padding: 128px 0 144px;
}
.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
    opacity: 0.85;
}
.hero-grid { width: 100%; height: 100%; }
.hero::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 255, 0.4), transparent);
}
.hero-content { max-width: 880px; }

.pronunciation {
    font-family: var(--f-mono);
    font-size: 13px;
    letter-spacing: 0.04em;
    color: var(--c-blue-light);
    margin: 0 0 24px;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 8px 14px;
    border: 1px solid rgba(56, 189, 248, 0.25);
    border-radius: 999px;
    background: rgba(37, 99, 255, 0.05);
}
.pronunciation .phonetic {
    color: rgba(248, 250, 252, 0.65);
    font-weight: 400;
}

.hero-title {
    font-family: var(--f-heading);
    font-weight: 600;
    font-size: clamp(60px, 10vw, 128px);
    line-height: 0.95;
    letter-spacing: -0.04em;
    margin: 0 0 28px;
    color: var(--c-white);
}

.definition {
    font-size: 17.5px;
    line-height: 1.7;
    color: rgba(248, 250, 252, 0.75);
    margin: 0 0 32px;
    max-width: 720px;
}
.definition .pos {
    font-family: var(--f-mono);
    font-style: normal;
    color: var(--c-blue-light);
    margin-right: 8px;
    font-size: 14px;
}
.definition em { color: var(--c-white); font-style: italic; }

.divider {
    width: 56px;
    height: 1px;
    background: var(--c-blue);
    margin: 0 0 28px;
    box-shadow: 0 0 12px rgba(37, 99, 255, 0.5);
}

.hero-statement {
    font-family: var(--f-heading);
    font-weight: 500;
    font-size: clamp(22px, 2.6vw, 30px);
    line-height: 1.35;
    letter-spacing: -0.015em;
    color: var(--c-white);
    margin: 0;
    max-width: 780px;
}

/* ----------------------------------------------------------
   Section heads
   ---------------------------------------------------------- */
.section-head { margin-bottom: 56px; }
.section-head .section-title { margin-bottom: 22px; }

/* ----------------------------------------------------------
   Reveal on scroll (cards + steps)
   ---------------------------------------------------------- */
.card,
.step {
    opacity: 0;
    transition: opacity 700ms var(--ease);
}
.card.is-visible,
.step.is-visible { opacity: 1; }
.card:nth-child(2),
.step:nth-child(2) { transition-delay: 90ms; }
.card:nth-child(3),
.step:nth-child(3) { transition-delay: 180ms; }

/* ----------------------------------------------------------
   What We Build — Cards
   ---------------------------------------------------------- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.card {
    position: relative;
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 36px 32px;
    overflow: hidden;
}
.card::before {
    content: '';
    position: absolute;
    left: 0; right: 0; top: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--c-blue), var(--c-blue-light));
}
.card-index {
    font-family: var(--f-mono);
    font-size: 12px;
    letter-spacing: 0.16em;
    color: var(--c-blue);
    display: block;
    margin-bottom: 24px;
}
.card-title {
    font-family: var(--f-heading);
    font-weight: 600;
    font-size: 22px;
    line-height: 1.25;
    letter-spacing: -0.01em;
    margin: 0 0 14px;
    color: var(--c-text-dark);
}
.card-body {
    font-size: 15.5px;
    line-height: 1.65;
    color: var(--c-text-muted);
    margin: 0;
}

/* ----------------------------------------------------------
   How We Work — Steps
   ---------------------------------------------------------- */
.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.step {
    position: relative;
    padding: 36px 28px 32px;
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
}
.step-num {
    font-family: var(--f-mono);
    font-size: 12px;
    letter-spacing: 0.16em;
    color: var(--c-text-muted);
    display: block;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--c-border);
}
.step-title {
    font-family: var(--f-heading);
    font-weight: 600;
    font-size: 24px;
    letter-spacing: -0.01em;
    margin: 0 0 12px;
    color: var(--c-text-dark);
}
.step-body {
    font-size: 15.5px;
    line-height: 1.65;
    color: var(--c-text-muted);
    margin: 0;
}

/* ----------------------------------------------------------
   Governance grid
   ---------------------------------------------------------- */
#governance { padding-bottom: 80px; }
.gov-grid {
    max-width: 640px;
    margin: 0 auto;
    border-top: 1px solid var(--c-border);
}
.gov-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 4px;
    border-bottom: 1px solid var(--c-border);
}
.gov-marker {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--c-blue);
    flex-shrink: 0;
}
.gov-label {
    font-size: 16px;
    font-weight: 500;
    color: var(--c-text-dark);
    letter-spacing: -0.005em;
}

/* ----------------------------------------------------------
   CTA
   ---------------------------------------------------------- */
.cta {
    position: relative;
    background: linear-gradient(180deg, var(--c-bg-dark-2) 0%, var(--c-bg-dark) 100%);
    color: var(--c-white);
    padding: 120px 0;
    overflow: hidden;
    isolation: isolate;
    text-align: center;
}
.cta-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
    opacity: 0.6;
}
.cta-bg svg { width: 100%; height: 100%; }
.cta::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(50% 70% at 50% 50%, rgba(37, 99, 255, 0.20), transparent 70%);
}
.cta-content { max-width: 920px; margin: 0 auto; }
.cta-content .eyebrow { margin-bottom: 20px; }
.cta-title {
    font-family: var(--f-heading);
    font-weight: 600;
    font-size: clamp(40px, 6vw, 76px);
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin: 0;
    color: var(--c-white);
}
.cta-sub {
    margin: 28px auto 0;
    max-width: 620px;
    font-size: 17px;
    line-height: 1.6;
    color: rgba(248, 250, 252, 0.75);
}
.cta-email {
    color: var(--c-blue-light);
    font-weight: 500;
    border-bottom: 1px solid rgba(56, 189, 248, 0.35);
    padding-bottom: 1px;
    transition: color var(--transition), border-color var(--transition);
}
.cta-email:hover {
    color: var(--c-white);
    border-bottom-color: var(--c-white);
}
.cta-divider {
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--c-blue), transparent);
    margin: 40px auto 0;
    box-shadow: 0 0 14px rgba(37, 99, 255, 0.6);
}

/* ----------------------------------------------------------
   Footer
   ---------------------------------------------------------- */
.site-footer {
    background: var(--c-bg-dark);
    color: rgba(248, 250, 252, 0.7);
    padding: 64px 0 36px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-wordmark {
    font-family: var(--f-heading);
    font-weight: 600;
    font-size: 22px;
    color: var(--c-white);
    margin: 0 0 10px;
    letter-spacing: -0.01em;
}
.footer-tag {
    font-size: 14px;
    color: rgba(248, 250, 252, 0.55);
    margin: 0;
    max-width: 340px;
}
.footer-nav ul {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}
.footer-nav a {
    font-size: 14px;
    color: rgba(248, 250, 252, 0.7);
    font-weight: 500;
}
.footer-nav a:hover { color: var(--c-blue-light); }
.footer-base {
    margin-top: 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.footer-copy {
    font-family: var(--f-mono);
    font-size: 12px;
    letter-spacing: 0.06em;
    color: rgba(248, 250, 252, 0.4);
    margin: 0;
}

/* ----------------------------------------------------------
   Responsive
   ---------------------------------------------------------- */
@media (max-width: 960px) {
    .section { padding: 88px 0; }
    .hero { padding: 104px 0 120px; }
    .cta { padding: 96px 0; }
    .section-head { margin-bottom: 44px; }
    #governance { padding-bottom: 64px; }

    .card-grid,
    .steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
    body { font-size: 16px; }
    .container { padding: 0 22px; }
    .section { padding: 72px 0; }
    .hero { padding: 88px 0 96px; }
    .cta { padding: 80px 0; }
    .section-head { margin-bottom: 40px; }
    #governance { padding-bottom: 56px; }

    .header-inner { height: 64px; }
    .site-nav {
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(7, 17, 31, 0.98);
        backdrop-filter: blur(16px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        transform: translateY(-12px);
        opacity: 0;
        visibility: hidden;
        transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
    }
    .site-nav.is-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    .site-nav ul {
        flex-direction: column;
        gap: 0;
        padding: 16px 22px 24px;
        align-items: stretch;
    }
    .site-nav li {
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .site-nav li:last-child { border-bottom: 0; }
    .site-nav a {
        display: block;
        padding: 16px 0;
        font-size: 16px;
    }
    .site-nav a::after { display: none; }
    .nav-toggle { display: block; }

    .card-grid,
    .steps { grid-template-columns: 1fr; }

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 28px;
    }
    .footer-nav ul { gap: 18px 24px; }
    .footer-base { flex-direction: column; align-items: flex-start; gap: 14px; }

    .pronunciation { font-size: 12px; }
    .definition { font-size: 16.5px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .card, .step { opacity: 1 !important; }
}