:root{--preview-width:min(100vw,430px);--rpx:calc(var(--preview-width)/750);--notice-height:24px;--tabbar-height:calc(112 * var(--rpx) + env(safe-area-inset-bottom,0px));color-scheme:light;}
html{margin:0;padding:0;background:#f1f1f1;scroll-behavior:auto;}
body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;color:#171717;overflow-x:hidden;}
#preview-shell{width:var(--preview-width);max-width:100%;min-height:100vh;margin:0 auto;background:#fff;position:relative;padding-top:var(--notice-height);}
.preview-notice{position:fixed;top:0;left:50%;transform:translateX(-50%);z-index:150;width:var(--preview-width);height:var(--notice-height);font-size:11px;line-height:24px;letter-spacing:.5px;text-align:center;background:#f5f5f5;color:#777;border-bottom:1px solid #eee;box-sizing:border-box;}
.preview-notice a{color:#333;text-decoration:underline;text-underline-offset:3px;margin-left:12px;}
::selection{background:#d8d8d8;color:#171717;}
[role=button]:focus-visible,button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid #171717;outline-offset:3px;}
#page-root{min-height:calc(100vh - var(--notice-height));padding-bottom:calc(28px + env(safe-area-inset-bottom,0px));}
#preview-shell.has-tabbar #page-root{padding-bottom:0;}
wx-view,wx-page,wx-scroll-view,wx-swiper,wx-swiper-item{display:block;box-sizing:border-box;}
wx-scroll-view[data-scroll-x]{overflow-x:auto;overflow-y:hidden;scrollbar-width:none;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch;}
wx-scroll-view[data-scroll-x]::-webkit-scrollbar{display:none;}
wx-scroll-view[data-scroll-y]{overflow-y:auto;-webkit-overflow-scrolling:touch;}
wx-swiper{overflow:hidden;position:relative;touch-action:pan-y;}
wx-swiper-item{width:100%;height:100%;flex:0 0 100%;min-width:0;}
.wx-swiper-track{display:flex;width:100%;height:100%;will-change:transform;}
button,input{font:inherit;box-sizing:border-box;}
button{border:0;line-height:1.5;cursor:pointer;-webkit-tap-highlight-color:transparent;}
img{display:block;max-width:100%;}
[role=button]{cursor:pointer;-webkit-tap-highlight-color:transparent;}
input{outline:none;}
brand-nav,section-heading,quick-entry,news-card,brand-card,product-card,event-card,atlas-entry,empty-state,demo-sheet{display:block;min-width:0;}
#preview-tabbar{display:none;position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:var(--preview-width);height:var(--tabbar-height);padding-bottom:env(safe-area-inset-bottom,0px);box-sizing:border-box;background:#fff;border-top:1px solid #eaeaea;z-index:80;grid-template-columns:repeat(5,minmax(0,1fr));}
#preview-shell.has-tabbar #preview-tabbar{display:grid;}
.preview-tab{position:relative;display:flex;align-items:center;justify-content:flex-end;flex-direction:column;min-width:0;height:calc(112 * var(--rpx));padding:0 0 calc(16 * var(--rpx));color:#707070;background:#fff;line-height:1;}
.preview-tab.active{color:#171717;}
.preview-tab-icon{display:flex;align-items:center;justify-content:center;width:calc(44 * var(--rpx));height:calc(44 * var(--rpx));margin-bottom:calc(10 * var(--rpx));}.preview-tab-icon img{width:100%;height:100%;object-fit:contain;}.preview-tab-label{font-size:calc(24 * var(--rpx));line-height:calc(30 * var(--rpx));white-space:nowrap;font-weight:400;}.preview-tab.active .preview-tab-label{font-weight:500;}.preview-tab.knowledge-tab .preview-tab-icon{position:absolute;bottom:calc(50 * var(--rpx));width:calc(80 * var(--rpx));height:calc(80 * var(--rpx));margin:0;border-radius:50%;background:transparent;overflow:hidden;}.preview-tab.knowledge-tab .preview-tab-icon img{width:calc(106 * var(--rpx));height:calc(106 * var(--rpx));flex-shrink:0;max-width:none;}.preview-tab.knowledge-tab.active .preview-tab-icon{background:transparent;}
.image-viewer{position:fixed;inset:0;z-index:300;background:rgba(0,0,0,.94);display:flex;align-items:center;justify-content:center;padding:32px 20px;box-sizing:border-box;}
.image-viewer[hidden]{display:none;}
.image-viewer img{max-width:100%;max-height:85vh;width:auto;height:auto;object-fit:contain;background:#fff;}
.image-close{position:absolute;right:max(16px,env(safe-area-inset-right,0px));top:max(16px,env(safe-area-inset-top,0px));height:44px;width:44px;background:transparent;color:#fff;font-size:38px;line-height:1;}
#preview-toast{position:fixed;left:50%;top:50%;transform:translate(-50%,-50%);background:rgba(0,0,0,.8);padding:14px 20px;color:#fff;z-index:400;max-width:calc(var(--preview-width) - 64px);border-radius:10px;font-size:14px;text-align:center;}
.preview-loading{padding:40px 24px;font-size:15px;color:#707070;}
.preview-error{margin:24px;padding:24px;background:#f7f7f7;font-size:15px;line-height:1.7;}
.preview-error button{margin-top:16px;background:#171717;color:white;padding:12px 20px;}
body.overlay-open{overflow:hidden;}
@media(prefers-reduced-motion:reduce){.wx-swiper-track{transition:none!important;}}