/* ── Past Conferences hero ── */
.past-conf-hero {
    background: var(--color-primary);
    color: var(--color-secondary);
    padding: clamp(3.2rem, 7vw, 6rem) 0 clamp(2.4rem, 5vw, 4.2rem);
}

.past-conf-hero__inner {
    padding: 0 1.5rem;
}

.past-conf-hero__eyebrow {
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: 0.78rem;
    opacity: 0.65;
}

.past-conf-hero__title {
    display: block;
    margin: 0.3rem 0 0;
    text-transform: uppercase;
    font-family: var(--font-action);
    line-height: 0.88;
    letter-spacing: 0.03em;
    font-size: clamp(2.4rem, 6.5vw, 6rem);
}

.past-conf-hero__title-filled {
    display: block;
    color: #ffffff;
}

.past-conf-hero__title-outlined {
    display: block;
    color: transparent;
    -webkit-text-stroke: 2px #ffffff;
}

.about-smn-conferences {
    background: var(--fc-bg);
}

.about-smn-conferences__inner {
    width: min(1320px, 96vw);
    margin: 0 auto;
    padding: clamp(2rem, 4vw, 3.5rem) 0 clamp(3rem, 5vw, 4rem);
    display: grid;
    gap: clamp(1rem, 2.2vw, 1.5rem);
}

.about-smn-conference {
    background: var(--fc-bg);
}

.about-smn-conference__panel {
    background: transparent;
}

.about-smn-conference__panel[open] {
    background: var(--fc-surface);
}

.about-smn-conference__header {
    padding: clamp(0.9rem, 2vw, 1.4rem) clamp(1rem, 2.1vw, 1.5rem);
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 1.25rem;
    align-items: center;
    cursor: pointer;
    list-style: none;
}

.about-smn-conference__year {
    font-size: clamp(1.75rem, 3.5vw, 2.75rem);
    font-weight: 800;
    color: var(--fc-accent);
    letter-spacing: -0.02em;
    line-height: 1;
    white-space: nowrap;
}

.about-smn-conference__header::-webkit-details-marker {
    display: none;
}



.about-smn-conference__meta {
    min-width: 0;
}

.about-smn-conference__toggle {
    inline-size: 0.75rem;
    block-size: 0.75rem;
    border-right: 2px solid var(--fc-muted);
    border-bottom: 2px solid var(--fc-muted);
    transform: rotate(45deg);
    transition: transform 180ms ease;
}

.about-smn-conference__panel[open] .about-smn-conference__toggle {
    transform: rotate(225deg);
}

.about-smn-conference__eyebrow {
    margin: 0 0 0.2rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.7rem;
    color: var(--fc-accent);
    font-weight: 700;
}

.about-smn-conference__title {
    margin: 0;
    line-height: 1.15;
    font-size: clamp(1.4rem, 2.6vw, 2.1rem);
}

.about-smn-conference__theme {
    margin: 0.4rem 0 0;
    color: var(--fc-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.about-smn-conference__summary {
    margin: 0.45rem 0 0;
    max-width: 70ch;
    color: var(--fc-muted);
}

.about-smn-conference__body {
    padding-bottom: 0.75rem;
}

.about-smn-conference__videos {
    padding: 0.25rem 0 0.6rem;
}

.about-smn-conference .landing12-media-section {
    background: transparent;
}

.about-smn-conference .landing12-trailers-inner {
    max-width: 100%;
}

.about-smn-conference .landing12-wrap {
    padding-top: 0.9rem;
}

.about-smn-conference .landing12-trailers-head {
    margin-bottom: 0.8rem;
}

.about-smn-conference .landing12-trailers-head .label {
    display: none;
}

.about-smn-conference .landing12-trailers-head h2 {
    font-size: clamp(1.2rem, 1.8vw, 1.45rem);
}

.about-smn-conference .landing12-trailers-grid {
    gap: 0.75rem;
}

.about-smn-conference .landing12-trailer-card {
    background: var(--fc-surface);
    border: 0;
}

/* ── Skeleton loading state ── */
@keyframes about-smn-shimmer {
    0%   { background-position: -200% 0; }
    100% { background-position:  200% 0; }
}

.about-smn-conference .landing12-trailer-card.is-loading .landing12-trailer-thumb {
    position: relative;
}

.about-smn-conference .landing12-trailer-card.is-loading .landing12-trailer-thumb::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg,
        var(--fc-surface) 25%,
        color-mix(in srgb, var(--fc-muted) 18%, var(--fc-surface)) 50%,
        var(--fc-surface) 75%
    );
    background-size: 200% 100%;
    animation: about-smn-shimmer 1.4s ease-in-out infinite;
    border-radius: inherit;
    z-index: 1;
}

.about-smn-conference .landing12-trailer-card.is-loading .landing12-trailer-thumb img {
    opacity: 0;
    transition: opacity 300ms ease;
}

.about-smn-conference .landing12-trailer-card:not(.is-loading) .landing12-trailer-thumb img {
    opacity: 1;
    transition: opacity 300ms ease;
}

.about-smn-conference .landing12-trailer-copy {
    padding: 0.58rem 0.65rem 0.7rem;
}

.about-smn-conference .landing12-trailer-copy .label {
    margin-bottom: 0.2rem;
    font-size: 0.6rem;
}

.about-smn-conference .landing12-trailer-title {
    font-size: clamp(0.9rem, 1.35vw, 1.05rem);
    line-height: 1.22;
}

.about-smn-conference .landing12-media-section__actions {
    margin-top: 0.95rem;
}

.about-smn-conference__empty {
    padding: 0.8rem 1.4rem 1.2rem;
    color: var(--fc-muted);
}

.about-smn-conference__empty p {
    margin: 0;
}

.about-smn-conference + .about-smn-conference {
    border-top: 1px solid var(--fc-line);
    padding-top: 0.7rem;
}

@media (max-width: 767.98px) {
    .about-smn-conferences__inner {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }

    .about-smn-conference__header {
        padding: 0.9rem 0.75rem;
        gap: 0.6rem;
    }

    .about-smn-conference__title {
        font-size: 1.15rem;
    }

    .about-smn-conference__summary {
        font-size: 0.85rem;
    }

    .about-smn-conference .landing12-wrap {
        padding: 0.75rem;
    }

    .about-smn-conference__toggle {
        inline-size: 0.6rem;
        block-size: 0.6rem;
    }
}