/* TRACER RECART free-tool shell v1. Keep this file identical across tools. */
:root{--tr-shell-bg:#f6f8fb;--tr-shell-surface:#fff;--tr-shell-text:#162033;--tr-shell-muted:#536278;--tr-shell-line:rgba(25,45,70,.12);--tr-shell-accent:#087ca8}
html[data-theme="dark"]{--tr-shell-bg:#07111f;--tr-shell-surface:#0c1829;--tr-shell-text:#eaf2ff;--tr-shell-muted:#91a6c3;--tr-shell-line:#223753;--tr-shell-accent:#7be0ff}
.tr-site-header,.tr-site-footer{box-sizing:border-box;color:var(--tr-shell-text);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:14px;line-height:1.6}
.tr-site-header{position:sticky;top:0;z-index:50;border-bottom:1px solid var(--tr-shell-line);background:var(--tr-shell-bg)}
.tr-header-inner,.tr-footer-inner{box-sizing:border-box;width:min(1180px,calc(100% - 40px));margin-inline:auto}
.tr-header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:10px}
.tr-site-header .tr-product{display:flex;align-items:center;gap:10px;min-width:0;text-decoration:none;color:var(--tr-shell-text)}
.tr-product-icon{display:block;width:32px;height:32px;flex-shrink:0;border-radius:10px;border:1px solid var(--tr-shell-line);object-fit:contain;background:var(--tr-shell-surface)}
.tr-product-label{display:grid;gap:2px;line-height:1.25}
.tr-product-label strong{font-size:16px;font-weight:750;letter-spacing:.02em;white-space:nowrap}
.tr-product-label small{font-size:10px;font-weight:600;letter-spacing:.12em;color:var(--tr-shell-muted);text-transform:uppercase}
.tr-site-header .tr-header-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}
.tr-site-header .tr-header-actions>a,.tr-site-header .tr-header-actions>.tr-theme-toggle{box-sizing:border-box;display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:8px 10px;margin:0;border:1px solid var(--tr-shell-line);border-radius:10px;background:var(--tr-shell-surface);color:var(--tr-shell-text);text-decoration:none;font-family:inherit;font-size:13px;font-weight:600;line-height:1.2;letter-spacing:0;white-space:nowrap;cursor:pointer}
.tr-site-header .tr-header-actions>.tr-theme-toggle{width:44px;height:44px;font-size:17px}
.tr-site-header .tr-header-actions>a:hover,.tr-site-header .tr-header-actions>.tr-theme-toggle:hover{border-color:var(--tr-shell-accent);color:var(--tr-shell-accent);transform:none}
.tr-site-header a:focus-visible,.tr-site-header button:focus-visible,.tr-site-footer a:focus-visible{outline:3px solid var(--tr-shell-accent);outline-offset:3px}
.tr-site-footer{border-top:1px solid var(--tr-shell-line);background:var(--tr-shell-bg);margin-top:40px;padding:28px 0 44px}
.tr-footer-heading{display:flex;align-items:center;flex-wrap:wrap;gap:8px 16px}
.tr-site-footer .tr-footer-brand{color:var(--tr-shell-text);font-size:14px;font-weight:750;letter-spacing:.04em;text-decoration:none}
.tr-footer-caption{color:var(--tr-shell-muted);font-size:13px}
.tr-footer-nav{display:flex;flex-wrap:wrap;gap:4px 20px;margin-top:12px}
.tr-site-footer .tr-footer-nav a{display:inline-flex;align-items:center;min-height:44px;color:var(--tr-shell-accent);font-size:13px;text-decoration:none}
.tr-site-footer .tr-footer-nav a:hover{text-decoration:underline;text-underline-offset:4px}
.tr-footer-note{margin:12px 0 0;color:var(--tr-shell-muted);font-size:13px;line-height:1.7;max-width:880px}
@media(max-width:600px){.tr-header-inner,.tr-footer-inner{width:calc(100% - 28px)}.tr-header-inner{min-height:68px;gap:10px}.tr-product-label strong{font-size:14px}.tr-product-icon{width:28px;height:28px}.tr-site-footer{margin-top:28px;padding-bottom:32px}.tr-footer-nav{gap:4px 16px}}
@media(max-width:360px){.tr-header-inner{flex-wrap:wrap}.tr-site-header .tr-product{flex-basis:100%}.tr-site-header .tr-header-actions{width:100%;justify-content:flex-end}}