/* =============================================================
   Home — Trade Program 条
   尺寸约定：间距 / 字号 / 区块高度用 rem · clamp（随根字号缩放）；
   断点仍用 px（视口约定）；细边框可用 px。
   参考：home_partners.css
============================================================= */
.home-trade {
    width: 100%;
    overflow: hidden;
}

.home-trade__bg {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    /* ~600px @ 16px root */
    height: clamp(28rem, 55vh, 37.5rem);
    overflow: hidden;
    background-color: var(--color-primary);
    background-image: linear-gradient(160deg, #1a2f34 0%, #2a4a50 42%, #205058 100%);
}

.home-trade__bg-media {
    position: absolute;
    inset: 0;
    z-index: 0;
    display: block;
    margin: 0;
    padding: 0;
}

.home-trade__bg-image {
    position: absolute;
    inset: 0;
    z-index: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: var(--home-trade-bg-position, center center);
    transition: transform 0.6s ease;
}

/* 遮罩浓度：公共 .nd-section__overlay 读 --section-overlay（section_overlay.css） */
.home-trade,
.home-trade__bg {
    --section-overlay: rgba(0, 0, 0, 0.48);
}

.home-trade__content {
    position: relative;
    z-index: 2;
    width: 100%;
    text-align: center;
    color: #fff;
    text-shadow: 0 0.125rem 0.5rem rgba(0, 0, 0, 0.6);
}

.home-trade__text {
    max-width: 50rem;
    margin: 0 auto;
    padding: 0 clamp(1rem, 4vw, 1.25rem);
}

.home-trade__eyebrow {
    margin: 0 0 0.9375rem;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.125em;
    line-height: 1.4;
    text-transform: uppercase;
    color: #e5e1da;
    opacity: 0.9;
    text-shadow: 0 0.125rem 0.375rem rgba(0, 0, 0, 0.6);
}

.home-trade__title {
    margin: 0 0 1.5625rem;
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: 0.04em;
    line-height: 1.2;
    text-transform: uppercase;
    color: #fdfcf9;
    text-shadow: 0.1875rem 0.1875rem 0.375rem rgba(0, 0, 0, 0.9);
}

.home-trade__desc {
    margin: 0 auto 2.1875rem;
    max-width: 43.75rem;
    font-size: clamp(1rem, 2.2vw, 1.1rem);
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.85);
    text-shadow: 0 0.125rem 0.375rem rgba(0, 0, 0, 0.5);
}

.home-trade__cta {
    display: inline-block;
    position: relative;
    overflow: hidden;
    padding: 0.9375rem 2.1875rem;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    text-decoration: none;
    color: #fff;
    background: transparent;
    border: 2px solid #fff;
    border-radius: 0;
    cursor: pointer;
    transition: background 0.3s ease, color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.home-trade__cta-short {
    display: none;
}

.home-trade__cta:hover {
    background: #fff;
    color: var(--color-primary);
    transform: translateY(-0.1875rem) scale(1.05);
    box-shadow: 0 0.5rem 1.5625rem rgba(255, 255, 255, 0.4);
}

@media (hover: hover) and (pointer: fine) {
    .home-trade:hover .home-trade__bg-image {
        transform: scale(1.12);
    }

    .home-trade:hover,
    .home-trade:hover .home-trade__bg {
        --section-overlay: rgba(0, 0, 0, 0.25);
    }
}

@media (max-width: 1023px) {
    .home-trade__bg {
        /* ~520px @ 16px root */
        height: clamp(26rem, 50vh, 32.5rem);
    }
}

@media (max-width: 768px) {
    .home-trade__bg {
        height: auto;
        min-height: 0;
        /* 约 60px @ 16px；随根字号 / 窄屏略收放 */
        padding-block: clamp(3.25rem, 9vw, 3.75rem);
        box-sizing: border-box;
    }

    .home-trade__text {
        padding-inline: clamp(1rem, 4vw, 1.25rem);
    }

    .home-trade__eyebrow {
        font-size: 0.8rem;
        letter-spacing: 0.08em;
    }

    .home-trade__title {
        margin-bottom: 1.125rem;
        font-size: clamp(1.45rem, 6.2vw, 1.85rem);
    }

    .home-trade__desc {
        font-size: 1rem;
        margin-bottom: 1.75rem;
        line-height: 1.65;
    }

    .home-trade__cta {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        max-width: 100%;
        padding: 0.875rem 1.375rem;
        font-size: 0.8125rem;
        letter-spacing: 0.08em;
        white-space: nowrap;
    }

    .home-trade__cta-full {
        display: none;
    }

    .home-trade__cta-short {
        display: inline;
    }
}