:root{--bg:#fff;--card-bg:#f7f7f8;--card-border:#e5e5e5;--text:#333;--text-bright:#111;--text-dim:#999;--green:#16a34a;--red:#dc2626}*{margin:0;padding:0;box-sizing:border-box}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,system-ui,Segoe UI,Roboto,sans-serif;min-height:100vh}.container{max-width:840px;margin:0 auto;padding:32px 16px}.header{text-align:center;margin-bottom:28px}.header h1{font-size:26px;color:var(--text-bright);letter-spacing:.5px}.updated{font-size:12px;color:var(--text-dim);margin-top:6px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));grid-gap:14px;gap:14px}.card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:14px;padding:16px 18px}.card-title{font-size:11px;text-transform:uppercase;letter-spacing:1.5px;color:var(--text-dim);margin-bottom:12px}.item{display:flex;justify-content:space-between;align-items:baseline;padding:7px 0;border-bottom:1px solid #eee}.item:last-child{border-bottom:none}.label{font-size:13px;color:#666}.value{font-size:17px;font-weight:600;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:var(--text-bright);display:flex;align-items:baseline;gap:8px}.change{font-size:12px;font-weight:500}.up{color:var(--green)}.down{color:var(--red)}.loading-text{color:var(--text-dim);font-size:13px;animation:pulse 1.5s ease-in-out infinite}.error-text{color:var(--red);font-size:12px}.footer{text-align:center;margin-top:24px;font-size:11px;color:var(--text-dim)}@keyframes pulse{0%,to{opacity:.4}50%{opacity:.7}}