:root {
    --background: #1a0404;
    --card: #320c0c;
    --card-hover: #3d0f0f;
    --accent: #c73434;
    --accent-strong: #a12b2b;
    --text: #f8fff8;
    --text-muted: rgba(248, 255, 248, 0.75);
    --border: rgba(255, 255, 255, 0.08);
    --shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
    background: radial-gradient(circle at top, #3b0e0e 0%, #000000 45%, #000000 100%);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

.header-content {
    max-width: 1080px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 11px 18px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.2);
}

.btn-home {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
    color: #fff;
}

.btn-home:hover {
    transform: translateY(-1px);
    filter: brightness(1.04);
}

.btn-whatsapp {
    background: #e54444;
    color: #fff;
}

.btn-whatsapp:hover {
    transform: translateY(-1px);
    filter: brightness(1.05);
}

main {
    flex: 1;
    padding: 120px 20px 40px;
}

.hero {
    max-width: 780px;
    margin: 0 auto 48px;
    text-align: center;
}

.hero img {
    max-width: 100%;
    height: auto;
    margin: 0 auto 16px;
    filter: drop-shadow(0 10px 24px rgba(0, 0, 0, 0.45));
}

.hero p {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    max-width: 1080px;
    margin: 0 auto;
}

.feature-card {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    padding: 28px 18px;
    background: linear-gradient(155deg, rgba(179, 60, 60, 0.85) 0%, rgba(139, 36, 34, 0.82) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 200px;
    box-shadow: var(--shadow);
    transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
}

.feature-card:hover {
    transform: translateY(-6px) scale(1.02);
    filter: brightness(1.05);
    box-shadow: 0 24px 50px rgba(0, 0, 0, 0.55);
}

.feature-card svg {
    width: 54px;
    height: 54px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
    font-weight: 700;
}

.feature-card p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.5;
}

footer {
    margin-top: 60px;
    padding: 24px 16px;
    text-align: center;
    background: #000000;
    border-top: 1px solid var(--border);
    font-size: 0.9rem;
    color: var(--text-muted);
}

@media (max-width: 640px) {
    .btn span {
        display: none;
    }

    .header-content {
        padding: 12px 16px;
    }

    .feature-card {
        min-height: 160px;
        padding: 24px 16px;
    }

    .feature-card svg {
        width: 42px;
        height: 42px;
        margin-bottom: 12px;
    }
}