:root {
    --color-bg: #ffffff;
    --color-bg-alt: #f6f7fb;
    --color-text: #14161c;
    --color-text-muted: #5a5f6d;
    --color-border: #e6e8ee;
    --color-accent: #23409a;
    --color-accent-hover: #1a2f78;
    --color-accent-soft: #eef1fb;
    --color-accent-2: #0f8f83;
    --color-accent-2-soft: #e2f5f2;
    --color-accent-3: #c07a1f;
    --color-accent-3-soft: #faf1e0;
    --radius: 12px;
    --container-width: 1120px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    text-decoration: underline;
}

h1, h2, h3 {
    line-height: 1.25;
    font-weight: 650;
    letter-spacing: -0.01em;
}

h1 {
    font-size: clamp(2rem, 1.5rem + 2vw, 3rem);
    margin: 0 0 1rem;
}

h2 {
    font-size: 1.6rem;
    margin: 0 0 1rem;
}

h3 {
    font-size: 1.15rem;
    margin: 0 0 0.5rem;
}

p {
    margin: 0 0 1rem;
}

code {
    background: var(--color-accent-soft);
    padding: 0.15em 0.4em;
    border-radius: 4px;
    font-size: 0.9em;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.narrow {
    max-width: 760px;
}

/* Header */

.site-header {
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.brand {
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--color-text);
    text-decoration: none;
}

.main-nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px 28px;
}

.main-nav a {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    text-decoration: none;
}

.main-nav a:hover {
    color: var(--color-text);
}

.main-nav .nav-cta {
    color: var(--color-accent);
    font-weight: 600;
}

.nav-toggle-input {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    opacity: 0;
}

.nav-toggle-label {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 9px;
    cursor: pointer;
    border-radius: 6px;
}

.nav-toggle-label span {
    display: block;
    height: 2px;
    background: var(--color-text);
    border-radius: 1px;
}

.nav-toggle-input:focus-visible ~ .nav-toggle-label {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Hero */

.hero {
    padding: 96px 0 72px;
    background: linear-gradient(180deg, var(--color-accent-soft) 0%, var(--color-bg) 100%);
}

.hero-inner {
    max-width: 780px;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--color-accent);
    margin: 0 0 1rem;
}

.lead {
    font-size: 1.15rem;
    color: var(--color-text-muted);
}

.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 2rem;
}

/* Buttons */

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    border: 1px solid transparent;
}

.btn:hover {
    text-decoration: none;
}

.btn-primary {
    background: var(--color-accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-accent-hover);
}

.btn-ghost {
    color: var(--color-text);
    border-color: var(--color-border);
    background: transparent;
}

.btn-ghost:hover {
    border-color: var(--color-text);
}

/* Sections */

.section {
    padding: 64px 0;
}

.section-alt {
    background: var(--color-bg-alt);
}

.page-header {
    padding: 64px 0 32px;
}

.page-header h1 {
    max-width: 780px;
}

.page-header--accent {
    background: linear-gradient(180deg, var(--color-accent-soft) 0%, var(--color-bg) 100%);
}

.page-header--accent-2 {
    background: linear-gradient(180deg, var(--color-accent-2-soft) 0%, var(--color-bg) 100%);
}

.page-header--accent-2 .eyebrow {
    color: var(--color-accent-2);
}

.page-header--accent-3 {
    background: linear-gradient(180deg, var(--color-accent-3-soft) 0%, var(--color-bg) 100%);
}

.page-header--accent-3 .eyebrow {
    color: var(--color-accent-3);
}

/* Cards */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-top: 1.5rem;
}

.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px;
}

.card p {
    color: var(--color-text-muted);
    margin-bottom: 0;
}

/* Icon badges */

.icon-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    margin-bottom: 16px;
}

.icon-badge svg {
    width: 22px;
    height: 22px;
}

.icon-badge--accent {
    background: var(--color-accent-soft);
    color: var(--color-accent);
}

.icon-badge--accent-2 {
    background: var(--color-accent-2-soft);
    color: var(--color-accent-2);
}

.icon-badge--accent-3 {
    background: var(--color-accent-3-soft);
    color: var(--color-accent-3);
}

.card-meta {
    margin-top: 0.9rem;
    padding-top: 0.9rem;
    border-top: 1px solid var(--color-border);
    font-size: 0.82rem;
}

/* Diagram */

.diagram-wrap {
    margin: 1.5rem 0 0;
    padding: 24px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-bg);
    overflow-x: auto;
}

.diagram-wrap svg {
    display: block;
    width: 100%;
    height: auto;
    min-width: 640px;
    color: var(--color-text);
}

.diagram-caption {
    color: var(--color-text-muted);
    font-size: 0.88rem;
    margin-top: 1rem;
}

.legend {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    margin: 1rem 0 0;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.legend-line {
    width: 28px;
    height: 0;
    border-top: 2px solid var(--color-text-muted);
}

.legend-line.accent {
    border-top-color: var(--color-accent);
}

.legend-line.accent-2 {
    border-top-color: var(--color-accent-2);
}

.legend-line.accent-3 {
    border-top-color: var(--color-accent-3);
}

.legend-line.dashed {
    border-top-style: dashed;
}

/* CTA banner */

.cta-banner-inner {
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1.5rem;
    background:
        radial-gradient(120% 180% at 100% 0%, rgba(255, 255, 255, 0.16) 0%, rgba(255, 255, 255, 0) 55%),
        linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
    color: #fff;
    border-radius: 18px;
    padding: 48px 52px;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.14),
        0 24px 48px -24px rgba(20, 30, 70, 0.55);
}

.cta-banner-inner h2 {
    margin: 0;
    color: #fff;
    font-size: clamp(1.4rem, 1.15rem + 1vw, 1.85rem);
    max-width: 34ch;
}

.cta-banner-inner .btn-primary {
    background: #fff;
    color: var(--color-accent);
    box-shadow: 0 10px 24px -10px rgba(10, 16, 40, 0.35);
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.cta-banner-inner .btn-primary:hover {
    background: #eef1fb;
    transform: translateY(-2px);
    box-shadow: 0 14px 28px -12px rgba(10, 16, 40, 0.4);
}

@media (prefers-reduced-motion: reduce) {
    .cta-banner-inner .btn-primary {
        transition: none;
    }

    .cta-banner-inner .btn-primary:hover {
        transform: none;
    }
}

/* Live VP demo */

.vp-demo-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 40px 32px;
}

.vp-demo-qr-frame {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 240px;
    height: 240px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    background: var(--color-bg-alt);
}

.vp-demo-qr-image {
    width: 100%;
    height: 100%;
    border-radius: 6px;
}

.vp-demo-spinner {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent);
    animation: vp-spin 0.9s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
    .vp-demo-spinner {
        animation: none;
    }
}

@keyframes vp-spin {
    to {
        transform: rotate(360deg);
    }
}

.vp-demo-status {
    font-weight: 600;
    margin: 0;
}

.vp-demo-deeplink {
    font-size: 0.9rem;
}

.vp-demo-claims {
    width: 100%;
    text-align: left;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    overflow: hidden;
}

.vp-demo-claim-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.95rem;
}

.vp-demo-claim-row:last-child {
    border-bottom: none;
}

.vp-demo-claim-label {
    color: var(--color-text-muted);
}

.vp-demo-claim-value {
    font-weight: 600;
    text-align: right;
}

.vp-demo-note {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    margin-top: 1.25rem;
}

.vp-demo-requirement {
    display: inline-block;
    margin-top: 0.75rem;
    padding: 10px 16px;
    border-radius: 8px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.9rem;
    max-width: 640px;
}

.vp-demo-issuer-btn {
    margin-top: 4px;
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

/* Contact */

.contact-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px;
    margin-bottom: 1.5rem;
}

.contact-row {
    display: flex;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 1.05rem;
}

.contact-row:last-child {
    border-bottom: none;
}

.contact-row a {
    flex: 1;
    min-width: 0;
    overflow-wrap: anywhere;
}

.contact-label {
    color: var(--color-text-muted);
    min-width: 100px;
}

.contact-note {
    color: var(--color-text-muted);
}

/* Footer */

.site-footer {
    border-top: 1px solid var(--color-border);
    padding: 40px 0;
    margin-top: 40px;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.footer-tagline {
    margin-left: 10px;
}

.footer-links {
    display: flex;
    gap: 20px;
}

@media (max-width: 860px) {
    .header-inner {
        flex-wrap: wrap;
        height: auto;
        padding: 14px 0;
    }

    .nav-toggle-label {
        display: flex;
    }

    .main-nav {
        display: none;
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        gap: 2px;
        padding-bottom: 14px;
    }

    .nav-toggle-input:checked ~ .main-nav {
        display: flex;
    }

    .main-nav a {
        width: 100%;
        padding: 10px 4px;
    }

    .main-nav .nav-cta {
        border-top: 1px solid var(--color-border);
        margin-top: 6px;
        padding-top: 14px;
    }

    .hero {
        padding: 48px 0 40px;
    }

    .section {
        padding: 40px 0;
    }

    .page-header {
        padding: 40px 0 16px;
    }

    .cta-banner-inner {
        padding: 28px 24px;
    }
}