:root{--ink: #10162f;--ink-soft: #171c3b;--paper: #f4efe3;--gold: #e5bd65;--gold-soft: #f1cf78;--serif: "Noto Serif SC", serif;--display: "ZCOOL XiaoWei", var(--serif);--mono: "DM Mono", monospace}*{box-sizing:border-box}html{scroll-behavior:smooth}body.footprint-page{min-width:320px;margin:0;color:var(--paper);background:radial-gradient(circle at 78% 13%,rgba(88,106,158,.29),transparent 23rem),radial-gradient(circle at 14% 76%,rgba(201,80,77,.14),transparent 24rem),var(--ink);font-family:var(--serif)}.trail-header,.trail-footer{display:flex;align-items:center;justify-content:space-between;width:min(1120px,calc(100% - 3rem));margin:0 auto}.trail-header{min-height:102px;border-bottom:1px solid rgba(244,239,227,.14)}.trail-wordmark{display:grid;gap:4px;color:var(--paper);font-family:var(--display);font-size:22px;line-height:1;text-decoration:none}.trail-wordmark small,.trail-kicker,.section-heading>p,.unfinished-road>span,.map-caption{color:var(--gold);font-family:var(--mono);font-size:10px;letter-spacing:.16em}.trail-wordmark small{font-size:8px}.trail-actions{display:flex;align-items:center;gap:18px}.home-link,.trail-footer a{color:var(--gold-soft);font-size:13px;letter-spacing:.08em;text-decoration:none;transition:color .18s ease,transform .18s ease}.home-link:hover,.home-link:focus-visible,.trail-footer a:hover,.trail-footer a:focus-visible{color:#fff8d8;transform:translate(-3px);outline:none}.trail-sound-toggle{position:relative;display:inline-grid;place-items:center;width:32px;height:32px;padding:0;border:1px solid rgba(229,189,101,.7);border-radius:50%;color:var(--gold);background:transparent;cursor:pointer;font:400 20px/1 sans-serif}.trail-sound-on .trail-sound-toggle>span{display:inline-block;animation:trail-note .85s ease-in-out infinite alternate}.trail-sound-toggle[aria-pressed=false]>span:after{content:"";position:absolute;top:14px;left:2px;width:28px;height:2px;border-radius:2px;background:currentColor;box-shadow:0 1px 4px var(--ink);transform:rotate(-45deg)}@keyframes trail-note{0%{transform:translateY(1px) rotate(-8deg)}to{transform:translateY(-3px) rotate(8deg)}}.trail-hero,.walking-copy{width:min(850px,calc(100% - 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