:root {
    --cor-primaria: #0068FF;
    --cor-primaria-escura: #0050CC;
    --cor-primaria-clara: #3385FF;
    --cor-primaria-mais-clara: #6BA3FF;
}
* { box-sizing: border-box; }
body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: #1f2937;
    line-height: 1.65;
    margin: 0 auto;
    padding: 32px 40px 48px;
    max-width: 800px;
    text-align: justify;
}
h1 { font-size: 1.75rem; font-weight: 700; color: #0f172a; margin-bottom: 8px; }
.lead { font-size: 1.05rem; color: #64748b; margin-bottom: 28px; }
h2 { font-size: 1.2rem; font-weight: 600; color: var(--cor-primaria-escura); margin-top: 28px; margin-bottom: 12px; }
h3 { font-size: 1.05rem; font-weight: 600; color: #0f172a; margin-top: 20px; margin-bottom: 8px; }
p { margin-bottom: 14px; color: #334155; }
.card {
    background: linear-gradient(135deg, rgba(0, 104, 255, 0.06) 0%, rgba(107, 163, 255, 0.08) 100%);
    border: 1px solid rgba(0, 104, 255, 0.15);
    border-radius: 12px;
    padding: 20px 24px;
    margin: 20px 0;
}
.card p:last-child { margin-bottom: 0; }
.support-box {
    background: #f0fdf4;
    border: 1px solid #86efac;
    border-radius: 12px;
    padding: 20px 24px;
    margin: 20px 0;
}
.support-box a { color: var(--cor-primaria-escura); font-weight: 600; text-decoration: none; }
.support-box a:hover { text-decoration: underline; }
.alert-danger {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
    border-radius: 12px;
    padding: 16px 20px;
    margin: 20px 0;
}
.tutorial-img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 20px 0;
    display: block;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    border: 1px solid #e5e7eb;
}
figcaption { font-size: 0.9rem; color: #64748b; margin-top: 8px; }
ul, ol { margin: 12px 0 20px 24px; color: #334155; }
ul li, ol li { margin-bottom: 8px; }
strong { color: #0f172a; }
.intro-video-wrapper { position: relative; margin: 20px 0; }
.intro-video-trigger {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    border: none;
    background: transparent;
    cursor: pointer;
    z-index: 4;
    text-decoration: none;
    color: #fff;
}
.intro-video-trigger:focus-visible {
    outline: 3px solid rgba(0, 104, 255, 0.45);
    outline-offset: 4px;
    border-radius: 14px;
}
.intro-video-icon {
    width: 74px;
    height: 74px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.45rem;
    color: #fff;
    background: linear-gradient(135deg, #0068ff 0%, #3385ff 100%);
    box-shadow: 0 10px 22px rgba(0, 104, 255, 0.38);
    animation: introVideoFloat 2.8s ease-in-out infinite;
}
.intro-video-label {
    font-size: 0.88rem;
    font-weight: 700;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.68);
    backdrop-filter: blur(3px);
    line-height: 1;
    box-shadow: 0 6px 12px rgba(15, 23, 42, 0.28);
}
@keyframes introVideoFloat {
    0%, 100% { transform: translateY(0px) scale(1); box-shadow: 0 10px 22px rgba(0, 104, 255, 0.38); }
    50% { transform: translateY(-5px) scale(1.03); box-shadow: 0 16px 30px rgba(0, 104, 255, 0.46); }
}
.intro-video-modal {
    position: fixed;
    inset: 0;
    background: rgba(2, 6, 23, 0.78);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    z-index: 2147483000;
}
.intro-video-modal.open { display: flex; }
.intro-video-modal-content {
    position: relative;
    width: min(960px, 95vw);
    border-radius: 16px;
    background: #020817;
    box-shadow: 0 28px 56px rgba(2, 6, 23, 0.55);
    padding: 14px;
}
.intro-video-close {
    position: absolute;
    right: 10px;
    top: 10px;
    width: 34px;
    height: 34px;
    border: none;
    border-radius: 999px;
    color: #fff;
    background: rgba(15, 23, 42, 0.84);
    cursor: pointer;
    z-index: 2;
}
.intro-video-player {
    width: 100%;
    max-height: 78vh;
    border-radius: 12px;
    display: block;
    background: #000;
}
.phone-frame {
    max-width: 360px;
    margin: 20px auto;
    display: block;
}
.phone-frame .tutorial-img { margin: 0; }
@media (max-width: 991px) {
    body { padding: 20px 20px 32px; }
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.1rem; margin-top: 22px; }
}
@media (max-width: 575px) {
    body { padding: 16px 16px 24px; }
    h1 { font-size: 1.35rem; }
    .lead { font-size: 1rem; }
}