.section-intro,
.section-why-us {
    width: 100%;
    max-width: 900px;
    margin: 2rem auto;
    padding: 2rem;

    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;

    background: rgba(15,15,15,0.6);
    border: 1px solid #00ffff;
    border-radius: 12px;
    box-shadow: 0 0 15px rgba(0,255,255,0.2);

    gap: 0.8rem;
}

.yt-hero {
    box-shadow: 0 0 25px rgba(0,255,255,0.3);
    position: relative;
    overflow: hidden;
}

.yt-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(
        ellipse at top center,
        rgba(0,255,255,0.08),
        transparent 65%
    );
}

.yt-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;

    border: 1px solid rgba(0,255,255,0.4);
    background: rgba(0,255,255,0.08);
    color: #00cccc;

    padding: 0.35rem 1rem;
    border-radius: 999px;

    font-size: 0.75rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.yt-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;

    background: #00ffff;
    box-shadow: 0 0 8px #00ffff;

    animation: yt-pulse 1.5s infinite;
}

@keyframes yt-pulse {
    0%,100% { opacity:1; transform:scale(1); }
    50% { opacity:0.4; transform:scale(0.7); }
}

.yt-main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    gap: 0.6rem;
    margin-top: 1.5rem;
    padding: 0.85rem 2rem;

    background: linear-gradient(135deg, #00cccc, #00ffff);
    color: #000 !important;

    border-radius: 10px;
    font-weight: 700;
    border: 1px solid rgba(0,255,255,0.4);

    box-shadow: 0 0 20px rgba(0,255,255,0.35);
    text-decoration: none;

    transition: all 0.3s ease;
}

.yt-main-btn:hover {
    background: linear-gradient(135deg, #00aaaa, #00dddd);
    box-shadow: 0 0 30px rgba(0,255,255,0.6);
    transform: translateY(-2px);
}

.section-why-us p,
.yt-features ul,
.yt-tips ul {
    text-align: center;
    width: 100%;
    max-width: 700px;
}

.yt-features ul,
.yt-tips ul {
    padding-left: 0;
    list-style-position: inside;
}

.yt-features ul li {
    padding: 0.4rem 0;
}

.yt-features ul li strong {
    color: #00cccc;
}

.steps {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 1.5rem;
}

.yt-step {
    position: relative;

    padding: 1.5rem 1rem 1rem;

    background: rgba(15,15,15,0.6);
    border: 1px solid #00ffff;
    border-radius: 12px;

    box-shadow: 0 0 15px rgba(0,255,255,0.2);

    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;

    gap: 0.5rem;
    height: 100%;

    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s forwards;
}

.yt-step:nth-child(1){ animation-delay:0.2s; }
.yt-step:nth-child(2){ animation-delay:0.4s; }
.yt-step:nth-child(3){ animation-delay:0.6s; }

.yt-step:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 20px #00cccc;
}

.yt-step-num {
    position: absolute;
    top: -0.8rem;
    left: 50%;
    transform: translateX(-50%);

    font-size: 0.75rem;
    font-weight: 900;

    background: #00ffff;
    color: #000;

    padding: 0.2rem 0.6rem;
    border-radius: 999px;
}

.yt-step h3 {
    color: #00cccc;
}

.yt-step p {
    line-height: 1.7;
}

.yt-step code {
    padding: 0.15rem 0.5rem;

    background: rgba(0,255,255,0.08);
    border: 1px solid rgba(0,255,255,0.2);
    border-radius: 4px;

    color: #00ffff;
}

.yt-tips ul li {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.yt-tips ul li:last-child {
    border-bottom: none;
}

.yt-tips ul li strong {
    color: #00cccc;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 900px) {
    .steps {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .steps {
        grid-template-columns: 1fr;
    }

    .yt-main-btn {
        width: 100%;
    }
}