/* --- 三档尺寸变量 --- */
.sign-banner--small {
    --sb-card: 56px;
    --sb-icon: 32px;
    --sb-img: 38px;
    --sb-radius: 12px;
    --sb-gap: 10px;
}

.sign-banner--medium {
    --sb-card: 72px;
    --sb-icon: 40px;
    --sb-img: 48px;
    --sb-radius: 16px;
    --sb-gap: 14px;
}

.sign-banner--large {
    --sb-card: 88px;
    --sb-icon: 52px;
    --sb-img: 60px;
    --sb-radius: 18px;
    --sb-gap: 16px;
}

.sign-banner {
    position: relative;
    display: flex;
    align-items: center;
    height: 260px;
    padding: 0 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 16px;
}

.sign-banner__text {
    position: absolute;
    left: 24px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    max-width: 40%;
    padding-left: 16px;
}

.sign-banner__title {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.3;
    color: var(--text-primary);
    margin: 0 0 12px 0;
}

.sign-banner__subtitle {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 2px;
    color: var(--text-tertiary);
}

.sign-banner__icons {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    overflow: hidden;
}

.sign-banner__icons-inner {
    position: absolute;
    top: 50%;
    right: var(--sb-right, 0px);
    display: flex;
    flex-direction: row-reverse;
    gap: var(--sb-gap, 14px);
    transform: translateY(-50%) rotate(var(--sb-rotate, 45deg));
    height: max(300%, 1800px);
}

.sign-banner__column {
    flex-shrink: 0;
    width: var(--sb-card);
    overflow: hidden;
    height: 100%;
}

.sign-banner__track {
    display: flex;
    flex-direction: column;
    gap: var(--sb-gap, 14px);
    will-change: transform;
}

.sign-banner__column[data-direction="up"] .sign-banner__track {
    animation: sign-banner-scroll-up var(--scroll-duration, 25s) linear infinite;
}

.sign-banner__column[data-direction="down"] .sign-banner__track {
    animation: sign-banner-scroll-down var(--scroll-duration, 25s) linear infinite;
}

.sign-banner__column:hover .sign-banner__track {
    animation-play-state: paused;
}

@keyframes sign-banner-scroll-up {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(-25%);
    }
}

@keyframes sign-banner-scroll-down {
    0% {
        transform: translateY(-25%);
    }
    100% {
        transform: translateY(0);
    }
}

.sign-banner__card {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--sb-card);
    height: var(--sb-card);
    border-radius: var(--sb-radius);
    flex-shrink: 0;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    text-decoration: none;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

a.sign-banner__card:hover {
    opacity: 0.8;
}

.sign-banner__card .sign-banner__card-icon,
.sign-banner__card .sign-banner__card-img {
    transform: rotate(calc(-90deg + var(--sb-card-rotate, 0deg)));
}

.sign-banner__card--no-bg {
    background: none !important;
    box-shadow: none;
    border-radius: 0 !important;
}

.sign-banner__card--no-bg .sign-banner__card-icon {
    width: var(--sb-card);
    height: var(--sb-card);
}

.sign-banner__card--no-bg .sign-banner__card-img {
    width: var(--sb-card);
    height: var(--sb-card);
    border-radius: 0;
}

.sign-banner__card-img {
    width: var(--sb-img);
    height: var(--sb-img);
    object-fit: contain;
    border-radius: 8px;
    pointer-events: none;
}

.sign-banner__card-icon {
    width: var(--sb-icon);
    height: var(--sb-icon);
}

.sign-banner__card-icon--single {
    color: var(--sb-icon-color, #fff);
    fill: var(--sb-icon-color, #fff);
}

/* --- 移动端 --- */
@media (max-width: 768px) {
    .sign-banner {
        height: 200px;
        padding: 0 16px;
    }

    .sign-banner__text {
        left: 16px;
        padding-left: 8px;
    }

    .sign-banner__title {
        font-size: 22px;
    }

    .sign-banner__subtitle {
        font-size: 12px;
    }

    .sign-banner--small {
        --sb-card: 44px;
        --sb-icon: 26px;
        --sb-img: 30px;
        --sb-radius: 10px;
        --sb-gap: 8px;
    }

    .sign-banner--medium {
        --sb-card: 56px;
        --sb-icon: 32px;
        --sb-img: 36px;
        --sb-radius: 12px;
        --sb-gap: 10px;
    }

    .sign-banner--large {
        --sb-card: 68px;
        --sb-icon: 40px;
        --sb-img: 46px;
        --sb-radius: 14px;
        --sb-gap: 12px;
    }
}

@media (max-width: 480px) {
    .sign-banner {
        height: 160px;
        padding: 0 12px;
    }

    .sign-banner__title {
        font-size: 18px;
        margin-bottom: 8px;
    }

    .sign-banner--small {
        --sb-card: 36px;
        --sb-icon: 22px;
        --sb-img: 26px;
        --sb-radius: 8px;
        --sb-gap: 6px;
    }

    .sign-banner--medium {
        --sb-card: 48px;
        --sb-icon: 26px;
        --sb-img: 30px;
        --sb-radius: 10px;
        --sb-gap: 8px;
    }

    .sign-banner--large {
        --sb-card: 56px;
        --sb-icon: 32px;
        --sb-img: 36px;
        --sb-radius: 12px;
        --sb-gap: 10px;
    }
}