/* 首页 EXHIBITION 图块 → "展会 / 样品间" 选择弹层
   走站点既有语言：深色图片底 + 站点绿(#00a651) + 大写宽字距 + 01/02 编号 */

.expo-chooser {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.5rem;
}

.expo-chooser[hidden] {
    display: none;
}

/* ---------- 遮罩 ---------- */
.expo-chooser-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(6, 6, 6, 0.78);
    opacity: 0;
    transition: opacity 0.45s ease;
}

/* ---------- 面板：暗色磨砂，不抢图片 ---------- */
.expo-chooser-panel {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 700px;
    max-height: 100%;
    overflow-y: auto;
    padding: 3rem 3rem 2.5rem;
    background: rgba(14, 14, 14, 0.84);
    -webkit-backdrop-filter: blur(16px) saturate(120%);
    backdrop-filter: blur(16px) saturate(120%);
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 2px;
    box-shadow: 0 40px 90px rgba(0, 0, 0, 0.5);
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s ease, transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 左上角一小段品牌绿，呼应首页标题区那两条绿短线 */
.expo-chooser-panel::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    width: 64px;
    height: 2px;
    background: #00a651;
}

/* 屏幕阅读器用，视觉上不出现（原来那句"请选择"） */
.expo-chooser-title {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ---------- 关闭：两条线，hover 转 90° ---------- */
.expo-chooser-close {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    width: 48px;
    height: 48px;
    padding: 0;
    border: 0;
    background: transparent;
    color: rgba(255, 255, 255, 0.45);
    cursor: pointer;
    transition: color 0.35s ease;
}

.expo-chooser-close span {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 18px;
    height: 1px;
    margin: -0.5px 0 0 -9px;
    background: currentColor;
    transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.expo-chooser-close span:nth-child(1) {
    transform: rotate(45deg);
}

.expo-chooser-close span:nth-child(2) {
    transform: rotate(-45deg);
}

.expo-chooser-close:hover,
.expo-chooser-close:focus-visible {
    color: #fff;
    outline: none;
}

.expo-chooser-close:hover span:nth-child(1),
.expo-chooser-close:focus-visible span:nth-child(1) {
    transform: rotate(135deg);
}

.expo-chooser-close:hover span:nth-child(2),
.expo-chooser-close:focus-visible span:nth-child(2) {
    transform: rotate(45deg);
}

/* ---------- 两个入口：发丝线分隔的整幅行 ---------- */
.expo-chooser-options {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.expo-option {
    position: relative;
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 1.25rem;
    padding: 2.25rem 0.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    color: #fff;
    text-decoration: none;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.5s ease, transform 0.55s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 底部那条绿线，hover 时从左扫出 */
.expo-option::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 1px;
    background: #00a651;
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
}

.expo-option-label {
    display: inline-block;
    font-size: clamp(1.3rem, 3vw, 1.8rem);
    font-weight: 500;
    line-height: 1.2;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #fff;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), letter-spacing 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.expo-option-arrow {
    display: flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.5);
    transition: color 0.35s ease, transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.expo-option-arrow svg {
    display: block;
}

/* 悬浮 / 键盘聚焦 */
.expo-option:hover .expo-option-arrow,
.expo-option:focus-visible .expo-option-arrow {
    color: #00a651;
}

.expo-option:hover .expo-option-label,
.expo-option:focus-visible .expo-option-label {
    transform: translateX(10px);
    letter-spacing: 0.2em;
}

.expo-option:hover .expo-option-arrow,
.expo-option:focus-visible .expo-option-arrow {
    transform: translateX(6px);
}

.expo-option:hover::after,
.expo-option:focus-visible::after {
    transform: scaleX(1);
}

.expo-option:focus-visible {
    outline: none;
}

/* ---------- 打开状态 ---------- */
.expo-chooser.is-open .expo-chooser-backdrop {
    opacity: 1;
}

.expo-chooser.is-open .expo-chooser-panel {
    opacity: 1;
    transform: translateY(0);
}

.expo-chooser.is-open .expo-option {
    opacity: 1;
    transform: translateY(0);
}

/* 逐行进场；关闭态把 delay 归零，收起来时才不会拖尾巴 */
.expo-chooser.is-open .expo-option:nth-child(1) {
    transition-delay: 0.12s;
}

.expo-chooser.is-open .expo-option:nth-child(2) {
    transition-delay: 0.2s;
}

/* ---------- 滚动锁 ---------- */
body.expo-chooser-open,
body.expo-chooser-open .ry-page-scroll {
    overflow: hidden;
}

/* ---------- 小屏 ---------- */
@media (max-width: 600px) {
    .expo-chooser {
        padding: 1.25rem 1rem;
    }

    .expo-chooser-panel {
        /* 顶部留够关闭按钮的高度，别让 ✕ 压在第一条横线上 */
        padding: 3.25rem 1.5rem 1.5rem;
    }

    .expo-option {
        grid-template-columns: 1fr auto;
        gap: 0.75rem;
        padding: 1.65rem 0;
    }

    .expo-option-label {
        font-size: 1.1rem;
        letter-spacing: 0.1em;
    }

    .expo-option:hover .expo-option-label,
    .expo-option:focus-visible .expo-option-label {
        letter-spacing: 0.14em;
    }
}

/* ---------- 减弱动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
    .expo-chooser-backdrop,
    .expo-chooser-panel,
    .expo-chooser-close span,
    .expo-option,
    .expo-option::after,
    .expo-option-label,
    .expo-option-arrow {
        transition: none !important;
    }
}