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

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #0a0a0a;
    color: #fff;
    overflow-x: hidden;
}

.back-link {
    position: fixed;
    top: 1.5rem;
    left: 1.5rem;
    z-index: 10;
    color: #fff;
    text-decoration: none;
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    background: rgba(0,0,0,0.4);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 999px;
    backdrop-filter: blur(8px);
    transition: background 0.3s ease;
}
.back-link:hover { background: rgba(0,0,0,0.7); }

.banner {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.banner__bg {
    position: absolute;
    inset: -8% -8% -8% -8%;
    will-change: transform;
}
.banner__bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    user-select: none;
    transform: scale(1.05);
}

.banner__overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(10,10,10,0.4) 0%, rgba(10,10,10,0.1) 40%, rgba(10,10,10,0.85) 100%),
        radial-gradient(ellipse at center, transparent 40%, rgba(10,10,10,0.6) 100%);
}

.banner__content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 0 2rem;
}

.banner__eyebrow {
    display: inline-block;
    font-size: 0.75rem;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.7);
    margin-bottom: 1.5rem;
    padding: 0.4rem 1rem;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 999px;
}

.banner__title {
    font-size: clamp(2.5rem, 8vw, 6rem);
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}
.banner__title .line {
    display: block;
    overflow: hidden;
}
.banner__title .char {
    display: inline-block;
    transform: translateY(110%);
    will-change: transform;
}

.banner__subtitle {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    color: rgba(255,255,255,0.75);
    max-width: 560px;
    margin: 0 auto 2.5rem;
    line-height: 1.5;
}

.banner__cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 0.9rem 1.8rem;
    border-radius: 999px;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
}
.btn:hover { transform: translateY(-2px); }

.btn--primary {
    background: #fff;
    color: #0a0a0a;
}
.btn--primary:hover { background: #f0f0f0; }

.btn--ghost {
    color: #fff;
    border: 1px solid rgba(255,255,255,0.3);
}
.btn--ghost:hover { background: rgba(255,255,255,0.1); }

.banner__scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    color: rgba(255,255,255,0.6);
    font-size: 0.7rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
}
.banner__scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, rgba(255,255,255,0.6), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
    0%, 100% { transform: scaleY(1); opacity: 0.6; }
    50% { transform: scaleY(0.5); opacity: 1; transform-origin: top; }
}

[data-reveal] {
    opacity: 0;
    transform: translateY(20px);
}