/* 全站共用层：由构建脚本注入到每个内容页。保持低特异性，不改动页面自己的布局。 */
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}
img{max-width:100%}
::selection{background:rgba(62,82,214,.22)}
:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{outline:3px solid #3e52d6;outline-offset:2px}
.vibe-progress{position:fixed;left:0;top:0;z-index:2147483645;height:3px;width:100%;transform:scaleX(0);transform-origin:0 50%;background:linear-gradient(90deg,#3e52d6,#7c43b6 55%,#14775e);pointer-events:none}
.vibe-nav{position:fixed;left:16px;bottom:16px;z-index:2147483645;display:flex;flex-direction:column;align-items:flex-start;gap:8px;font:600 13px/1.2 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
.vibe-nav a,.vibe-nav button{display:inline-flex;align-items:center;gap:7px;padding:9px 14px;border:1px solid rgba(32,39,56,.12);border-radius:999px;background:rgba(255,255,255,.94);color:#202738;text-decoration:none;box-shadow:0 5px 20px rgba(32,39,56,.12);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);cursor:pointer;font:inherit;transition:transform .15s,box-shadow .15s}
.vibe-nav a:hover,.vibe-nav button:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(32,39,56,.18)}
.vibe-mark{display:grid;place-items:center;width:20px;height:20px;border-radius:6px;background:#202738;color:#fff;font-size:13px;font-weight:800;line-height:1;padding-bottom:2px}
.vibe-top{opacity:0;pointer-events:none;transform:translateY(8px)}
.vibe-top.show{opacity:1;pointer-events:auto;transform:none}
@media(max-width:560px){.vibe-nav{left:10px;bottom:10px}.vibe-nav a,.vibe-nav button{padding:8px 11px;font-size:12px}}
@media(prefers-color-scheme:dark){.vibe-nav a,.vibe-nav button{border-color:rgba(255,255,255,.16);background:rgba(31,35,48,.92);color:#fff}.vibe-mark{background:#fff;color:#202738}}
@media print{.vibe-nav,.vibe-progress,.vibe-view-counter{display:none!important}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.vibe-nav a,.vibe-nav button{transition:none}}