:root{color-scheme:light dark;--bg: #fbfbfa;--bg-panel: #ffffff;--bg-sunken: #f4f4f2;--border: #e2e0dc;--border-strong: #cbc8c2;--text: #1c1b19;--text-dim: #6b6862;--text-faint: #918d86;--accent: #2b6cb0;--error: #b42318;--error-bg: #fdecea;--warning: #a15c07;--warning-bg: #fdf3e3;--info: #245ea6;--info-bg: #eaf1fb;--ok: #2f6f43;--ok-bg: #e9f4ec;--mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;--sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--radius: 6px}@media(prefers-color-scheme:dark){:root{--bg: #16161a;--bg-panel: #1d1d22;--bg-sunken: #131316;--border: #2c2c33;--border-strong: #3d3d46;--text: #e8e6e3;--text-dim: #a09d98;--text-faint: #74716c;--accent: #7aa8de;--error: #f2837a;--error-bg: #35201e;--warning: #e0ae62;--warning-bg: #322619;--info: #85b2e8;--info-bg: #1a2331;--ok: #7cc494;--ok-bg: #1b2a20}}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:var(--sans);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased;display:flex;flex-direction:column;min-height:100vh}code,kbd{font-family:var(--mono);font-size:.9em}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.masthead{display:flex;flex-wrap:wrap;gap:1rem 2rem;align-items:flex-start;justify-content:space-between;padding:1.5rem clamp(1rem,3vw,2.5rem) 1.25rem;border-bottom:1px solid var(--border);background:var(--bg-panel)}.masthead h1{margin:0 0 .35rem;font-size:1.35rem;font-weight:650;letter-spacing:-.01em}.tagline{margin:0;max-width:62ch;color:var(--text-dim);font-size:.9rem}.tagline strong{color:var(--text);font-weight:600}.masthead-meta{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1rem;font-size:.82rem;color:var(--text-dim)}.stat b{color:var(--text);font-variant-numeric:tabular-nums}.repo-link{color:var(--accent);text-decoration:none;border-bottom:1px solid transparent}.repo-link:hover{border-bottom-color:currentColor}.layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:1px;background:var(--border);flex:1;min-height:0}@media(max-width:940px){.layout{grid-template-columns:minmax(0,1fr)}}.pane{display:flex;flex-direction:column;min-width:0;background:var(--bg-panel);padding:1rem clamp(.85rem,2vw,1.5rem) 1.25rem}.pane-head{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:.6rem}.pane-head h2{margin:0;font-size:.78rem;font-weight:650;letter-spacing:.08em;text-transform:uppercase;color:var(--text-faint)}.controls{display:flex;gap:.5rem;min-width:0}select{font-family:inherit;font-size:.83rem;color:var(--text);background:var(--bg-sunken);border:1px solid var(--border-strong);border-radius:var(--radius);padding:.3rem .5rem;max-width:100%}.sample-about{margin:0 0 .6rem;font-size:.85rem;color:var(--text-dim);min-height:2.6em}.sample-about .provenance{display:inline-block;margin-left:.4rem;padding:.05rem .4rem;border:1px solid var(--border-strong);border-radius:999px;font-size:.75rem;color:var(--text-faint);white-space:nowrap}#editor{flex:1;min-height:340px;resize:vertical;width:100%;padding:.75rem;font-family:var(--mono);font-size:12.5px;line-height:1.65;tab-size:4;color:var(--text);background:var(--bg-sunken);border:1px solid var(--border);border-radius:var(--radius);white-space:pre;overflow:auto}#editor:focus{outline:2px solid var(--accent);outline-offset:-1px}.hint{margin:.6rem 0 0;font-size:.78rem;color:var(--text-faint)}.verdict{display:flex;flex-wrap:wrap;align-items:center;gap:.35rem .7rem;font-size:.8rem;font-weight:600}.verdict>span{display:inline-flex;align-items:center;gap:.3rem}.verdict-label{font-size:.7rem;font-weight:500;letter-spacing:.05em;text-transform:uppercase;color:var(--text-faint)}.chip{display:inline-block;padding:.1rem .45rem;border-radius:999px;font-size:.72rem;font-weight:600;letter-spacing:.02em;white-space:nowrap}.chip-valid{color:var(--ok);background:var(--ok-bg)}.chip-partial{color:var(--warning);background:var(--warning-bg)}.chip-invalid{color:var(--error);background:var(--error-bg)}.chip-unchecked{color:var(--text-faint);background:var(--bg-sunken)}.tabs{display:flex;gap:.25rem;border-bottom:1px solid var(--border);margin-bottom:.75rem}.tabs button{appearance:none;border:0;background:none;font-family:inherit;font-size:.83rem;font-weight:550;color:var(--text-dim);padding:.4rem .7rem;border-bottom:2px solid transparent;margin-bottom:-1px;cursor:pointer}.tabs button[aria-selected=true]{color:var(--text);border-bottom-color:var(--accent)}.tabs button:hover{color:var(--text)}.badge{display:inline-block;min-width:1.3em;padding:0 .3em;border-radius:999px;background:var(--bg-sunken);border:1px solid var(--border);font-size:.72rem;font-variant-numeric:tabular-nums;text-align:center}.badge.has-errors{color:var(--error);background:var(--error-bg);border-color:transparent}.tabpanel{flex:1;min-height:0;overflow:auto}.startline{margin-bottom:.9rem;padding:.6rem .7rem;background:var(--bg-sunken);border:1px solid var(--border);border-radius:var(--radius)}.startline-kind{font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--text-faint);margin-bottom:.3rem}.startline-parts{display:flex;flex-wrap:wrap;gap:.35rem .9rem;font-family:var(--mono);font-size:.82rem}.startline-parts span b{color:var(--text-faint);font-weight:500;font-family:var(--sans);font-size:.75rem;margin-right:.3rem}table.headers{width:100%;border-collapse:collapse;font-size:.82rem}table.headers th{text-align:left;font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;color:var(--text-faint);font-weight:600;padding:0 .5rem .35rem 0;border-bottom:1px solid var(--border)}table.headers td{padding:.4rem .5rem .4rem 0;border-bottom:1px solid var(--border);vertical-align:top}table.headers tr:hover td{background:var(--bg-sunken)}.hname{font-family:var(--mono);white-space:nowrap;font-weight:600}.hname .compact-note{display:block;font-weight:400;font-size:.72rem;color:var(--text-faint)}.hvalue{font-family:var(--mono);font-size:.78rem;word-break:break-word;color:var(--text-dim)}.hvalue .slot{display:block;padding:.05rem 0}.hvalue .slot+.slot{border-top:1px dashed var(--border);margin-top:.2rem;padding-top:.25rem}.hvalue .typed{color:var(--text-faint);font-family:var(--sans);font-size:.74rem}.folded-flag{display:inline-block;margin-left:.35rem;font-size:.68rem;color:var(--text-faint);border:1px solid var(--border-strong);border-radius:3px;padding:0 .25rem}.body-block{margin-top:.9rem}.body-block h3{font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--text-faint);margin:0 0 .35rem}.body-block pre{margin:0;padding:.6rem .7rem;background:var(--bg-sunken);border:1px solid var(--border);border-radius:var(--radius);font-size:.78rem;overflow-x:auto;white-space:pre-wrap;word-break:break-word}.body-meta{font-size:.75rem;color:var(--text-faint);margin-top:.3rem}.diag{border:1px solid var(--border);border-left-width:3px;border-radius:var(--radius);padding:.55rem .7rem;margin-bottom:.5rem;cursor:pointer;background:var(--bg-panel)}.diag:hover{background:var(--bg-sunken)}.diag-error{border-left-color:var(--error)}.diag-warning{border-left-color:var(--warning)}.diag-info{border-left-color:var(--info)}.diag-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:.4rem;margin-bottom:.25rem}.diag-code{font-family:var(--mono);font-size:.76rem;font-weight:600}.diag-error .diag-code{color:var(--error)}.diag-warning .diag-code{color:var(--warning)}.diag-info .diag-code{color:var(--info)}.diag-where{font-size:.72rem;color:var(--text-faint);font-family:var(--mono)}.diag-msg{font-size:.83rem;margin:0 0 .3rem}.diag-foot{display:flex;flex-wrap:wrap;gap:.4rem .8rem;font-size:.75rem;color:var(--text-dim)}.diag-spec{font-weight:600}.unverified-marker{color:var(--warning);border:1px solid currentColor;border-radius:3px;padding:0 .25rem;font-size:.68rem;text-transform:uppercase;letter-spacing:.04em}.diag-suggestion{font-family:var(--mono);font-size:.74rem}.diag-suggestion b{font-family:var(--sans);font-weight:600;color:var(--text-faint)}.empty-state{padding:1.5rem 0;color:var(--text-faint);font-size:.88rem}.octets{margin:0;font-family:var(--mono);font-size:12px;line-height:1.7;white-space:pre-wrap;word-break:break-all;background:var(--bg-sunken);border:1px solid var(--border);border-radius:var(--radius);padding:.7rem}.octets .ctrl{color:var(--text-faint);opacity:.65}.octets mark{background:none;color:inherit;padding:.05em 0;border-radius:2px}.octets mark.sev-error{background:var(--error-bg);box-shadow:inset 0 -2px 0 var(--error)}.octets mark.sev-warning{background:var(--warning-bg);box-shadow:inset 0 -2px 0 var(--warning)}.octets mark.sev-info{background:var(--info-bg);box-shadow:inset 0 -2px 0 var(--info)}.octets mark.flash{outline:2px solid var(--accent);outline-offset:1px}.legend{display:flex;flex-wrap:wrap;gap:.8rem;font-size:.75rem;color:var(--text-faint);margin-bottom:.5rem}.legend i{display:inline-block;width:.7rem;height:.7rem;border-radius:2px;margin-right:.25rem;vertical-align:-1px}.footer{padding:1rem clamp(1rem,3vw,2.5rem) 2rem;border-top:1px solid var(--border);background:var(--bg-panel)}.footer p{margin:0;max-width:90ch;font-size:.78rem;color:var(--text-faint)}