.serena-hero {
    --serena-accent: #ef111d;
    --serena-text: #fff;
    --serena-container: 1120px;
    position: relative;
    width: 100%;
    min-height: 690px;
    overflow: hidden;
    background: #151515;
    isolation: isolate;
}

.serena-hero,
.serena-hero * { box-sizing: border-box; }

.serena-hero__track,
.serena-hero__slide {
    position: absolute;
    inset: 0;
}

.serena-hero__slide {
    opacity: 0;
    visibility: hidden;
    transition-property: opacity, visibility;
    transition-duration: var(--serena-transition, 550ms);
    transition-timing-function: ease;
}

.serena-hero__slide.is-active {
    opacity: 1;
    visibility: visible;
    z-index: 1;
}

.serena-hero__media,
.serena-hero__overlay {
    position: absolute;
    inset: 0;
}

.serena-hero .serena-hero__image {
    width: 100% !important;
    max-width: none !important;
    height: 100% !important;
    display: block;
    object-fit: cover;
    transform-origin: center center;
}

.serena-hero__overlay {
    background:
        linear-gradient(90deg, rgba(0,0,0,.78) 0%, rgba(0,0,0,.60) 42%, rgba(0,0,0,.34) 68%, rgba(0,0,0,.26) 100%),
        linear-gradient(180deg, rgba(0,0,0,.08), rgba(0,0,0,.18));
    pointer-events: none;
}

.serena-hero__inner {
    position: relative;
    z-index: 2;
    min-height: inherit;
    width: min(calc(100% - 48px), var(--serena-container));
    margin: 0 auto;
    display: flex;
    align-items: center;
}

.serena-hero__content {
    width: 680px;
    max-width: 100%;
    padding: 52px 0 46px;
    color: var(--serena-text);
}

.serena-hero__eyebrow {
    margin: 0 0 24px 26px;
    color: var(--serena-text);
    font-size: 16px;
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: .34em;
}

.serena-hero__title-wrap {
    position: relative;
    display: flex;
    align-items: stretch;
    gap: 22px;
}

.serena-hero__accent {
    flex: 0 0 6px;
    width: 6px;
    min-height: 112px;
    margin-top: 8px;
    background: var(--serena-accent);
}

.serena-hero__title {
    margin: 0;
    max-width: 650px;
    color: var(--serena-text);
    font-size: clamp(46px, 5vw, 76px);
    line-height: 1.07;
    letter-spacing: -.035em;
    font-weight: 800;
}

.serena-hero__description {
    margin: 28px 0 0 28px;
    max-width: 620px;
    color: var(--serena-text);
    font-size: clamp(16px, 1.25vw, 19px);
    line-height: 1.72;
    font-weight: 600;
}

.serena-hero__button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 62px;
    margin: 30px 0 0 28px;
    padding: 0 31px;
    border-radius: 5px;
    background: var(--serena-accent);
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    font-weight: 800;
    line-height: 1;
    transition: transform .18s ease, filter .18s ease;
}

.serena-hero__button:hover,
.serena-hero__button:focus-visible {
    color: #fff;
    transform: translateY(-1px);
    filter: brightness(.92);
}

.serena-hero__nav {
    position: absolute;
    z-index: 4;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 56px;
    padding: 0;
    border: 0;
    border-radius: 4px;
    background: rgba(0,0,0,.25);
    color: rgba(255,255,255,.9);
    font: inherit;
    font-size: 36px;
    line-height: 1;
    cursor: pointer;
    opacity: 0;
    transition: opacity .2s ease, background .2s ease;
}

.serena-hero:hover .serena-hero__nav,
.serena-hero:focus-within .serena-hero__nav { opacity: 1; }
.serena-hero__prev { left: 18px; }
.serena-hero__next { right: 18px; }
.serena-hero__nav:hover { background: rgba(0,0,0,.48); }

.serena-hero__dots {
    position: absolute;
    z-index: 4;
    left: 50%;
    bottom: 22px;
    transform: translateX(-50%);
    display: flex;
    gap: 9px;
}

.serena-hero__dot {
    width: 9px;
    height: 9px;
    padding: 0;
    border: 1px solid rgba(255,255,255,.9);
    border-radius: 50%;
    background: transparent;
    cursor: pointer;
}

.serena-hero__dot.is-active { background: #fff; }

.serena-hero-empty {
    padding: 24px;
    border: 1px dashed #c7c7c7;
    background: #f7f7f7;
    color: #333;
}

@media (max-width: 1024px) {
    .serena-hero { min-height: 580px; }
    .serena-hero__inner { width: min(calc(100% - 34px), var(--serena-container)); }
    .serena-hero__content { width: min(520px, 70vw); padding: 42px 0 40px; }
    .serena-hero__eyebrow { margin: 0 0 18px 18px; font-size: 13px; letter-spacing: .18em; }
    .serena-hero__title-wrap { gap: 16px; }
    .serena-hero__accent { flex-basis: 5px; width: 5px; min-height: 84px; margin-top: 4px; }
    .serena-hero__title { font-size: clamp(34px, 6vw, 56px); line-height: 1.02; }
    .serena-hero__description { margin: 20px 0 0 18px; max-width: 440px; font-size: 15px; line-height: 1.55; }
    .serena-hero__button { margin: 24px 0 0 18px; min-height: 54px; padding: 0 24px; font-size: 14px; }
}

@media (max-width: 767px) {
    .serena-hero { min-height: 520px; }
    .serena-hero__inner {
        width: min(calc(100% - 24px), var(--serena-container));
        align-items: flex-start;
        padding-top: 26px;
        padding-bottom: 26px;
    }
    .serena-hero__content { width: min(430px, 68vw); max-width: 100%; padding: 0; }
    .serena-hero__eyebrow { margin: 0 0 12px 12px; font-size: 10px !important; line-height: 1.15; letter-spacing: .13em; }
    .serena-hero__title-wrap { gap: 12px; }
    .serena-hero__accent { flex-basis: 5px; width: 5px; min-height: 70px; margin-top: 3px; }
    .serena-hero__title { max-width: 100%; font-size: clamp(28px, 5.8vw, 38px) !important; line-height: 1.00 !important; letter-spacing: -.025em; }
    .serena-hero__description { margin: 15px 0 0 17px; max-width: 350px; font-size: 12px !important; line-height: 1.42 !important; font-weight: 600; }
    .serena-hero__button { margin: 18px 0 0 17px; min-height: 44px; padding: 0 18px; font-size: 12px !important; }
    .serena-hero__overlay {
        background:
            linear-gradient(90deg, rgba(0,0,0,.78) 0%, rgba(0,0,0,.62) 35%, rgba(0,0,0,.34) 64%, rgba(0,0,0,.12) 100%),
            linear-gradient(180deg, rgba(0,0,0,.12), rgba(0,0,0,.08));
    }
    .serena-hero__nav { display: none; }
    .serena-hero__dots { bottom: 16px; }
    .serena-hero .serena-hero__image { transform: scale(1.08); }
}

@media (prefers-reduced-motion: reduce) {
    .serena-hero__slide,
    .serena-hero__button,
    .serena-hero__nav { transition: none; }
}