:root {
    --bg: #111111;
    --bg-soft: #1c1c1c;
    --card: #181818;
    --text: #f6f4ef;
    --muted: rgba(246, 244, 239, 0.72);
    --accent: #ff7847;
    --line: rgba(255, 255, 255, 0.08);
    --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
    --max-width: 1280px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Manrope", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top center, rgba(255, 120, 71, 0.18), transparent 24%),
        linear-gradient(180deg, #111111 0%, #0a0a0a 100%);
}

img {
    display: block;
    max-width: 100%;
}

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

.topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    padding: 16px;
    background: rgba(10, 10, 10, 0.72);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
}

.topbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    width: min(var(--max-width), calc(100% - 24px));
    margin: 0 auto;
}

.topbar__label {
    margin: 0 0 4px;
    font-size: 0.8rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--muted);
}

.topbar h1 {
    margin: 0;
    font-size: clamp(1.4rem, 3vw, 2.1rem);
}

.topbar__cta,
.floating-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 18px;
    border-radius: 999px;
    background: var(--accent);
    color: white;
    font-weight: 700;
}

.slides-page {
    width: min(var(--max-width), calc(100% - 24px));
    margin: 0 auto;
    padding: 24px 0 56px;
}

.intro {
    max-width: 840px;
    margin: 0 auto 24px;
    padding: 0 12px;
    text-align: center;
}

.intro p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--muted);
}

.slides {
    display: grid;
    gap: 24px;
}

.slide-card {
    margin: 0;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
    box-shadow: var(--shadow);
}

.slide-card img {
    width: 100%;
    height: auto;
    border-radius: 16px;
}

.slide-card.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-card {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}

.floating-cta {
    position: fixed;
    right: 18px;
    bottom: 18px;
    z-index: 25;
    box-shadow: 0 16px 36px rgba(255, 120, 71, 0.28);
}

@media (max-width: 768px) {
    .topbar {
        padding: 12px;
    }

    .topbar__inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .topbar__cta {
        width: 100%;
    }

    .slides-page {
        width: calc(100% - 16px);
        padding-top: 16px;
    }

    .slide-card {
        padding: 6px;
        border-radius: 18px;
    }

    .slide-card img {
        border-radius: 12px;
    }

    .floating-cta {
        right: 12px;
        bottom: 12px;
        left: 12px;
    }
}