:root {
    --lb-primary: #006989;
    --lb-primary-dark: #004d66;
    --lb-primary-light: #008faf;
    --lb-primary-subtle: #e6f3f6;
    --lb-accent: #f0a04b;
    --lb-bg: #f0f6f8;
    --lb-surface: #ffffff;
    --lb-text: #1e2d32;
    --lb-text-muted: #5c7078;
    --lb-border: #d0e0e6;
    --lb-shadow: 0 16px 40px rgba(0, 77, 102, 0.1);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

.landing-body {
    margin: 0;
    font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--lb-text);
    background: var(--lb-bg);
}

.landing-wrap {
    min-height: 100vh;
}

.instalar-app {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.85rem 1.25rem;
    background: #fff;
    border-bottom: 1px solid var(--lb-border);
}

.instalar-app[hidden] {
    display: none;
}

.instalar-app p {
    margin: 0;
    color: var(--lb-text);
    font-size: 0.95rem;
}

.instalar-app-actions {
    display: flex;
    flex-shrink: 0;
    gap: 0.5rem;
}

.landing-nav {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--lb-border);
    backdrop-filter: blur(10px);
}

.landing-nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0.85rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.landing-brand {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    text-decoration: none;
    color: var(--lb-primary-dark);
    font-weight: 700;
    font-size: 1.15rem;
}

.landing-brand img {
    height: 40px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
    display: block;
}

.landing-nav-actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.landing-hero {
    background: linear-gradient(160deg, var(--lb-primary-dark) 0%, var(--lb-primary) 55%, var(--lb-primary-light) 100%);
    color: #fff;
}

.landing-hero-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 4rem 1.25rem 4.5rem;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2.5rem;
    align-items: center;
}

.landing-kicker {
    display: inline-block;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 999px;
    padding: 0.3rem 0.8rem;
    font-size: 0.82rem;
    margin-bottom: 1rem;
}

.landing-hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin: 0 0 1rem;
}

.landing-hero p.lead {
    font-size: 1.1rem;
    line-height: 1.55;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.75rem;
    max-width: 36rem;
}

.landing-cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.btn-landing-primary,
.btn-landing-light,
.btn-landing-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    border-radius: 0.7rem;
    font-weight: 600;
    padding: 0.7rem 1.15rem;
    text-decoration: none;
    border: 1px solid transparent;
}

.btn-landing-primary {
    background: var(--lb-accent);
    color: #3d2308;
}

.btn-landing-primary:hover {
    background: #e08e32;
    color: #3d2308;
}

.btn-landing-light {
    background: #fff;
    color: var(--lb-primary-dark);
}

.btn-landing-light:hover {
    background: var(--lb-primary-subtle);
    color: var(--lb-primary-dark);
}

.btn-landing-ghost {
    background: transparent;
    color: var(--lb-primary-dark);
    border-color: var(--lb-border);
}

.btn-landing-ghost:hover {
    border-color: var(--lb-primary);
    color: var(--lb-primary);
}

.landing-hero-card {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 1.25rem;
    padding: 1.5rem;
    box-shadow: var(--lb-shadow);
}

.landing-hero-card h2 {
    font-size: 1.05rem;
    margin: 0 0 1rem;
}

.landing-hero-card ol {
    margin: 0;
    padding-left: 1.2rem;
}

.landing-hero-card li + li {
    margin-top: 0.75rem;
}

.landing-section {
    max-width: 1100px;
    margin: 0 auto;
    padding: 3rem 1.25rem;
}

.landing-section h2 {
    font-size: 1.85rem;
    letter-spacing: -0.02em;
    margin-bottom: 0.6rem;
}

.landing-section > .section-lead {
    color: var(--lb-text-muted);
    max-width: 38rem;
    margin-bottom: 2rem;
}

.landing-grid-3,
.landing-grid-2 {
    display: grid;
    gap: 1.15rem;
}

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

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

.landing-card {
    background: var(--lb-surface);
    border: 1px solid var(--lb-border);
    border-radius: 1rem;
    padding: 1.35rem 1.3rem;
    box-shadow: 0 8px 24px rgba(0, 77, 102, 0.05);
    height: 100%;
}

.landing-card-photo {
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.landing-card-photo img {
    width: 100%;
    height: 168px;
    object-fit: cover;
    display: block;
}

.landing-card-body {
    padding: 1.1rem 1.2rem 1.25rem;
}

.landing-card i {
    color: var(--lb-primary);
    font-size: 1.35rem;
}

.landing-card h3 {
    font-size: 1.05rem;
    margin: 0.7rem 0 0.4rem;
}

.landing-card-photo h3 {
    margin-top: 0;
}

.landing-card p {
    margin: 0;
    color: var(--lb-text-muted);
    line-height: 1.5;
}

.landing-price {
    background: #fff;
    border: 1px solid var(--lb-border);
    border-radius: 1.25rem;
    padding: 2rem;
    box-shadow: var(--lb-shadow);
    max-width: 520px;
}

.landing-price .amount {
    font-size: 2rem;
    font-weight: 700;
    color: var(--lb-primary-dark);
    letter-spacing: -0.03em;
}

.landing-price .amount span {
    font-size: 1rem;
    font-weight: 600;
    color: var(--lb-text-muted);
}

.landing-price ul {
    margin: 1.25rem 0 1.5rem;
    padding: 0;
    list-style: none;
}

.landing-price li {
    display: flex;
    gap: 0.55rem;
    margin-bottom: 0.55rem;
}

.landing-price li i {
    color: var(--lb-primary);
    margin-top: 0.15rem;
}

.landing-footer {
    border-top: 1px solid var(--lb-border);
    padding: 1.5rem 1.25rem 2rem;
    color: var(--lb-text-muted);
    font-size: 0.9rem;
}

.landing-footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.landing-footer a {
    color: var(--lb-primary);
    font-weight: 600;
    text-decoration: none;
}

.landing-footer a:hover {
    text-decoration: underline;
}

@media (max-width: 860px) {
    .landing-hero-inner,
    .landing-grid-3,
    .landing-grid-2 {
        grid-template-columns: 1fr;
    }

    .landing-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .landing-hero-inner {
        padding-top: 2.5rem;
        padding-bottom: 3rem;
    }
}

@media (max-width: 520px) {
    .instalar-app {
        flex-direction: column;
        align-items: stretch;
    }

    .landing-grid-3 {
        grid-template-columns: 1fr;
    }

    .landing-nav-inner {
        flex-wrap: wrap;
    }

    .landing-nav-optional {
        display: none;
    }
}