:root{color-scheme:light;--ink:#17202a;--muted:#5f6b76;--line:#cbd6df;--paper:#f7f4ed;--card:#fff;--cyan:#0d7c86;--orange:#d46b35;--danger:#a53333}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.55 system-ui,"Microsoft YaHei",sans-serif}main{max-width:1080px;margin:auto;padding:28px}.eyebrow{letter-spacing:.16em;text-transform:uppercase;color:var(--cyan);font-weight:800;font-size:12px}h1{font-size:clamp(34px,6vw,70px);line-height:.98;margin:.2em 0}.lede{max-width:760px;color:var(--muted);font-size:18px}.grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 8px 30px #24384a0d}.board{position:relative;min-height:420px;border:2px solid var(--ink);border-radius:14px;background:linear-gradient(90deg,#fff 49.5%,#dfe8ed 50%,#fff 50.5%);overflow:hidden}.face{position:absolute;border:0;background:var(--ink);color:white;border-radius:9px;padding:10px 18px;font-weight:800;cursor:pointer}.face:hover,.face:focus{background:var(--cyan)}.face[data-face="0"]{top:8px;left:50%;transform:translateX(-50%)}.face[data-face="1"]{right:8px;top:50%;transform:translateY(-50%)}.face[data-face="2"]{bottom:8px;left:50%;transform:translateX(-50%)}.face[data-face="3"]{left:8px;top:50%;transform:translateY(-50%)}.courier-dot{position:absolute;width:64px;height:64px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:24px;font-weight:900;box-shadow:0 0 0 12px #ffffffb8}.courier-dot.a{background:var(--cyan);left:26%;top:42%}.courier-dot.b{background:var(--orange);right:26%;top:42%}.vector{position:absolute;left:50%;top:50%;width:38%;height:2px;background:var(--line);transform:translate(-50%,-50%) rotate(-18deg)}.couriers{display:grid;gap:10px}.courier{width:100%;text-align:left;border:2px solid var(--line);background:#fff;border-radius:12px;padding:12px;cursor:pointer}.courier.active{border-color:var(--cyan);box-shadow:0 0 0 3px #0d7c8622}.courier strong{font-size:20px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:14px 0}.stat{background:#eef3f5;border-radius:10px;padding:9px;text-align:center}.stat b{display:block;font-size:22px}.cause{border-left:5px solid var(--orange);padding:10px 12px;background:#fff6ec;min-height:70px}.controls{font-size:14px;color:var(--muted)}.hold{opacity:.62}.links{display:flex;flex-wrap:wrap;gap:10px}.links a,.primary{display:inline-block;padding:10px 14px;border-radius:999px;background:var(--ink);color:white;text-decoration:none;font-weight:700}.log{font-size:13px;max-height:180px;overflow:auto}.log li{margin-bottom:6px}@media(max-width:780px){.grid{grid-template-columns:1fr}.board{min-height:360px}.stats{grid-template-columns:repeat(2,1fr)}main{padding:18px}}