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110 lines
2.9 KiB
CSS
110 lines
2.9 KiB
CSS
/* 图片容器：100vw宽，最小宽度1440px，按图片原始比例（2560:1857）定高 */
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.zoom-container {
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width: 100%;
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min-width: 1440px;
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overflow: hidden;
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position: relative;
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/* 固定比例：高度 = 宽度 * 1857/2560，确保图片不裁切 */
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aspect-ratio: 2560 / 1857;
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height: auto; /* 替代原max计算，用aspect-ratio保证比例 */
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}
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/* 图片包裹层：与容器同尺寸，定位参考系，承接缩放变换 */
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.img-wrapper {
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position: absolute;
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top: 0;
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left: 0;
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width: 100%;
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height: 100%;
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overflow: hidden;
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}
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/* 图片：按原始比例填充包裹层，不裁切，初始放大+过渡动画 */
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.bg-img {
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width: 100%;
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height: 100%;
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object-fit: contain; /* 改为contain，确保图片完整显示，不裁切 */
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display: block;
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transform: scale(1.5);
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transition: transform 1.8s ease;
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transform-origin: center center;
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}
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/* 图片缩小后的状态 */
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.bg-img.zoom-out {
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transform: scale(1);
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}
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/* 标注样式：关键修正 - 基于容器绝对定位，百分比参考图片原始比例 */
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.annotation {
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position: absolute;
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color: #48494D;
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font-size: calc(12px + 0.3vw);
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opacity: 0;
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transform: translateY(calc(10px + 0.5vw));
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transition: opacity 0.8s ease, transform 0.8s ease;
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pointer-events: none;
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z-index: 10;
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white-space: nowrap;
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/* 关键：标注的定位参考系是容器（与图片同比例），而非缩放后的图片 */
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top: 0;
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left: 0;
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/* 重置默认值，依赖内联style的百分比定位 */
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}
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/* 标注显示状态 */
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.annotation.anno-show {
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opacity: 1;
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transform: translateY(0);
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}
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.annotation span {
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position: relative;
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display: inline-block;
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/* 确保文字居中对齐 */
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text-align: center;
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}
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/* 标注线条样式：基于文字定位，适配缩放 */
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.annotation span::before {
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content: '';
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position: absolute;
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left: 50%;
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transform: translateX(-50%);
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width: 1px;
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height: 0;
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bottom: calc(100% + 6px);
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background-color: #48494D;
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transition: height 0.8s ease;
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transform-origin: bottom center;
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}
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/* 标注显示时，设置线条最终高度 */
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.annotation.anno-show span::before {
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height:clamp(50px,3vw,0.6rem);
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/* 最终高度（vw单位） */
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}
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/* 响应式适配：1280px以下固定尺寸 */
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@media (max-width: 1280px) {
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.zoom-container {
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min-width: 1280px; /* 最小宽度适配 */
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}
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.annotation span::before {
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bottom: calc(100% + 6px);
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}
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.annotation.anno-show span::before {
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height: 38px; /* 固定高度 */
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}
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.annotation {
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font-size: 14px; /* 固定字体大小，避免过小 */
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}
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}
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/* 标注延迟类 */
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.anno-delay-1 {
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transition-delay: 0.8s;
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}
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.anno-delay-1 span::before {
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transition-delay: 0.8s;
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} |