:root {
    --bg: #f4f8ff;
    --bg-soft: #eef5f2;
    --ink: #0f2431;
    --ink-soft: #315062;
    --brand: #0f766e;
    --brand-dark: #0a5b55;
    --accent: #f59e0b;
    --card: #ffffff;
    --line: #d4e1ea;
    --shadow: 0 12px 36px rgba(15, 36, 49, 0.14);
    --radius-xl: 22px;
    --radius-md: 14px;
    --content: 1140px;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    background: radial-gradient(circle at 10% 0%, #deefff 0, transparent 45%), var(--bg);
    color: var(--ink);
    font-family: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
}

a {
    color: var(--brand);
}

.container {
    width: min(var(--content), calc(100% - 2rem));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(10px);
    background: rgba(244, 248, 255, 0.88);
    border-bottom: 1px solid var(--line);
}

.header-inner {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand {
    font-family: ui-serif, Georgia, Cambria, 'Times New Roman', serif;
    font-size: clamp(1.1rem, 3vw, 1.6rem);
    color: var(--ink);
    text-decoration: none;
    font-weight: 700;
}

.header-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 700;
    padding: 0.75rem 1.1rem;
    border: 1px solid transparent;
    transition: all .2s ease;
}

.button:hover {
    transform: translateY(-1px);
}

.button-primary {
    background: linear-gradient(120deg, var(--brand), #1f9f96);
    color: #fff;
}

.button-secondary {
    border-color: var(--line);
    color: var(--ink);
    background: #fff;
}

.hero {
    padding: 4.3rem 0 2.6rem;
}

.hero-grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: 1.15fr .85fr;
    align-items: center;
}

.hero h1 {
    margin: 0 0 1rem;
    font-family: ui-serif, Georgia, Cambria, 'Times New Roman', serif;
    font-size: clamp(2rem, 4vw, 3.3rem);
    line-height: 1.05;
}

.hero p {
    margin: 0 0 1.35rem;
    color: var(--ink-soft);
    max-width: 55ch;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    margin-bottom: 1rem;
}

.hero-meta {
    font-size: .95rem;
    color: var(--ink-soft);
}

.panel {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    padding: 1.1rem;
}

.panel img {
    width: 100%;
    border-radius: 14px;
    display: block;
}

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

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 1rem;
}

.card h3 {
    margin: 0 0 0.6rem;
    font-size: 1.1rem;
}

.card p {
    margin: 0;
    line-height: 1.5;
    color: var(--ink-soft);
}

section {
    padding: 1.8rem 0;
}

.defer-section {
    content-visibility: auto;
    contain-intrinsic-size: 1px 760px;
}

.kpis {
    background: linear-gradient(120deg, #0f766e, #0d9488);
    color: #fff;
    border-radius: var(--radius-xl);
    padding: 1rem;
}

.kpi-list {
    display: grid;
    gap: .8rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.kpi-list strong {
    display: block;
    font-size: clamp(1.3rem, 3vw, 1.9rem);
}

.kpi-list span {
    font-size: .95rem;
}

.use-cases {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.use-case {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 1rem;
}

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

.facts {
    background: var(--bg-soft);
    border: 1px solid #d5eadf;
    border-radius: var(--radius-xl);
    padding: 1rem;
}

.facts dl {
    margin: 0;
    display: grid;
    gap: .9rem;
}

.facts dt {
    font-weight: 800;
}

.facts dd {
    margin: .2rem 0 0;
    color: var(--ink-soft);
}

.faq-list {
    display: grid;
    gap: .8rem;
}

.faq-list details {
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fff;
    padding: .8rem 1rem;
}

.faq-list summary {
    cursor: pointer;
    font-weight: 700;
}

.link-grid {
    display: grid;
    gap: .8rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.footer {
    border-top: 1px solid var(--line);
    margin-top: 2rem;
    padding: 1.5rem 0 2.5rem;
    font-size: .95rem;
}

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

.footer ul {
    margin: .4rem 0 0;
    padding-left: 1rem;
}

small.muted,
.muted {
    color: var(--ink-soft);
}

@media (max-width: 980px) {
    .hero-grid,
    .grid-3,
    .kpi-list,
    .use-cases,
    .link-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .header-actions .button-secondary {
        display: none;
    }

    .hero {
        padding-top: 2.8rem;
    }
}