:root{--fg:#1b1f24;--muted:#5b6470;--bg:#fff;--panel:#f5f7fa;--border:#d8dde3;--accent:#0b5cad;--accent-fg:#fff;--ok:#1a7f37;--ok-bg:#eef8f0;--ok-border:#9bd3a8;--err:#c62828;--warn-bg:#fff4e0;--warn-border:#f0b860;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--fg);margin:0;font-family:system-ui,-apple-system,Apple SD Gothic Neo,Noto Sans KR,sans-serif;line-height:1.5}main{max-width:960px;margin:0 auto;padding:1rem}h1{margin:.5rem 0 1rem;font-size:1.4rem}h2{margin:1.5rem 0 .5rem;font-size:1.1rem}a{color:var(--accent)}label{margin:.75rem 0 .25rem;font-weight:600;display:block}input:not([type=file]):not([type=checkbox]),textarea{border:1px solid var(--border);background:#fff;border-radius:6px;width:100%;padding:.6rem .7rem;font-size:1rem}button,.button{border:1px solid var(--accent);background:var(--accent);width:100%;color:var(--accent-fg);cursor:pointer;border-radius:6px;margin-top:.75rem;padding:.75rem 1rem;font-size:1rem;font-weight:600;display:inline-block}button.secondary,.button.secondary{color:var(--accent);background:#fff}button.link{width:auto;color:var(--muted);background:0 0;border:none;margin:0;padding:0 .25rem}button:disabled{opacity:.6;cursor:default}.error{color:var(--err);margin:.5rem 0}.badge{border:1px solid var(--border);background:var(--panel);white-space:nowrap;border-radius:999px;padding:.05rem .45rem;font-size:.75rem;font-weight:600;display:inline-block}.badge.demo{background:var(--warn-bg);border-color:var(--warn-border)}.badge.RECEIVED{background:#e8f0fb;border-color:#9dbbe6}.badge.ACKNOWLEDGED{background:var(--ok-bg);border-color:var(--ok-border)}.muted{color:var(--muted)}